1 // SPDX-License-Identifier: GPL-2.0-only
3 * drivers/soc/tegra/pmc.c
5 * Copyright (c) 2010 Google, Inc
6 * Copyright (c) 2018-2022, NVIDIA CORPORATION. All rights reserved.
9 * Colin Cross <ccross@google.com>
12 #define pr_fmt(fmt) "tegra-pmc: " fmt
14 #include <linux/arm-smccc.h>
15 #include <linux/clk.h>
16 #include <linux/clk-provider.h>
17 #include <linux/clkdev.h>
18 #include <linux/clk/clk-conf.h>
19 #include <linux/clk/tegra.h>
20 #include <linux/debugfs.h>
21 #include <linux/delay.h>
22 #include <linux/device.h>
23 #include <linux/err.h>
24 #include <linux/export.h>
25 #include <linux/init.h>
27 #include <linux/iopoll.h>
28 #include <linux/irqdomain.h>
29 #include <linux/irq.h>
30 #include <linux/kernel.h>
31 #include <linux/of_address.h>
32 #include <linux/of_clk.h>
34 #include <linux/of_irq.h>
35 #include <linux/of_platform.h>
36 #include <linux/pinctrl/pinconf-generic.h>
37 #include <linux/pinctrl/pinconf.h>
38 #include <linux/pinctrl/pinctrl.h>
39 #include <linux/platform_device.h>
40 #include <linux/pm_domain.h>
41 #include <linux/pm_opp.h>
42 #include <linux/reboot.h>
43 #include <linux/regmap.h>
44 #include <linux/reset.h>
45 #include <linux/seq_file.h>
46 #include <linux/slab.h>
47 #include <linux/spinlock.h>
49 #include <soc/tegra/common.h>
50 #include <soc/tegra/fuse.h>
51 #include <soc/tegra/pmc.h>
53 #include <dt-bindings/interrupt-controller/arm-gic.h>
54 #include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h>
55 #include <dt-bindings/gpio/tegra186-gpio.h>
56 #include <dt-bindings/gpio/tegra194-gpio.h>
57 #include <dt-bindings/gpio/tegra234-gpio.h>
58 #include <dt-bindings/soc/tegra-pmc.h>
61 #define PMC_CNTRL_INTR_POLARITY BIT(17) /* inverts INTR polarity */
62 #define PMC_CNTRL_CPU_PWRREQ_OE BIT(16) /* CPU pwr req enable */
63 #define PMC_CNTRL_CPU_PWRREQ_POLARITY BIT(15) /* CPU pwr req polarity */
64 #define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */
65 #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */
66 #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */
67 #define PMC_CNTRL_PWRREQ_POLARITY BIT(8)
68 #define PMC_CNTRL_BLINK_EN 7
69 #define PMC_CNTRL_MAIN_RST BIT(4)
71 #define PMC_WAKE_MASK 0x0c
72 #define PMC_WAKE_LEVEL 0x10
73 #define PMC_WAKE_STATUS 0x14
74 #define PMC_SW_WAKE_STATUS 0x18
75 #define PMC_DPD_PADS_ORIDE 0x1c
76 #define PMC_DPD_PADS_ORIDE_BLINK 20
78 #define DPD_SAMPLE 0x020
79 #define DPD_SAMPLE_ENABLE BIT(0)
80 #define DPD_SAMPLE_DISABLE (0 << 0)
82 #define PWRGATE_TOGGLE 0x30
83 #define PWRGATE_TOGGLE_START BIT(8)
85 #define REMOVE_CLAMPING 0x34
87 #define PWRGATE_STATUS 0x38
89 #define PMC_BLINK_TIMER 0x40
90 #define PMC_IMPL_E_33V_PWR 0x40
92 #define PMC_PWR_DET 0x48
94 #define PMC_SCRATCH0_MODE_RECOVERY BIT(31)
95 #define PMC_SCRATCH0_MODE_BOOTLOADER BIT(30)
96 #define PMC_SCRATCH0_MODE_RCM BIT(1)
97 #define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
98 PMC_SCRATCH0_MODE_BOOTLOADER | \
99 PMC_SCRATCH0_MODE_RCM)
101 #define PMC_CPUPWRGOOD_TIMER 0xc8
102 #define PMC_CPUPWROFF_TIMER 0xcc
103 #define PMC_COREPWRGOOD_TIMER 0x3c
104 #define PMC_COREPWROFF_TIMER 0xe0
106 #define PMC_PWR_DET_VALUE 0xe4
108 #define PMC_USB_DEBOUNCE_DEL 0xec
109 #define PMC_USB_AO 0xf0
111 #define PMC_SCRATCH41 0x140
113 #define PMC_WAKE2_MASK 0x160
114 #define PMC_WAKE2_LEVEL 0x164
115 #define PMC_WAKE2_STATUS 0x168
116 #define PMC_SW_WAKE2_STATUS 0x16c
118 #define PMC_CLK_OUT_CNTRL 0x1a8
119 #define PMC_CLK_OUT_MUX_MASK GENMASK(1, 0)
120 #define PMC_SENSOR_CTRL 0x1b0
121 #define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2)
122 #define PMC_SENSOR_CTRL_ENABLE_RST BIT(1)
124 #define PMC_RST_STATUS_POR 0
125 #define PMC_RST_STATUS_WATCHDOG 1
126 #define PMC_RST_STATUS_SENSOR 2
127 #define PMC_RST_STATUS_SW_MAIN 3
128 #define PMC_RST_STATUS_LP0 4
129 #define PMC_RST_STATUS_AOTAG 5
131 #define IO_DPD_REQ 0x1b8
132 #define IO_DPD_REQ_CODE_IDLE (0U << 30)
133 #define IO_DPD_REQ_CODE_OFF (1U << 30)
134 #define IO_DPD_REQ_CODE_ON (2U << 30)
135 #define IO_DPD_REQ_CODE_MASK (3U << 30)
137 #define IO_DPD_STATUS 0x1bc
138 #define IO_DPD2_REQ 0x1c0
139 #define IO_DPD2_STATUS 0x1c4
140 #define SEL_DPD_TIM 0x1c8
142 #define PMC_UTMIP_UHSIC_TRIGGERS 0x1ec
143 #define PMC_UTMIP_UHSIC_SAVED_STATE 0x1f0
145 #define PMC_UTMIP_TERM_PAD_CFG 0x1f8
146 #define PMC_UTMIP_UHSIC_SLEEP_CFG 0x1fc
147 #define PMC_UTMIP_UHSIC_FAKE 0x218
149 #define PMC_SCRATCH54 0x258
150 #define PMC_SCRATCH54_DATA_SHIFT 8
151 #define PMC_SCRATCH54_ADDR_SHIFT 0
153 #define PMC_SCRATCH55 0x25c
154 #define PMC_SCRATCH55_RESET_TEGRA BIT(31)
155 #define PMC_SCRATCH55_CNTRL_ID_SHIFT 27
156 #define PMC_SCRATCH55_PINMUX_SHIFT 24
157 #define PMC_SCRATCH55_16BITOP BIT(15)
158 #define PMC_SCRATCH55_CHECKSUM_SHIFT 16
159 #define PMC_SCRATCH55_I2CSLV1_SHIFT 0
161 #define PMC_UTMIP_UHSIC_LINE_WAKEUP 0x26c
163 #define PMC_UTMIP_BIAS_MASTER_CNTRL 0x270
164 #define PMC_UTMIP_MASTER_CONFIG 0x274
165 #define PMC_UTMIP_UHSIC2_TRIGGERS 0x27c
166 #define PMC_UTMIP_MASTER2_CONFIG 0x29c
168 #define GPU_RG_CNTRL 0x2d4
170 #define PMC_UTMIP_PAD_CFG0 0x4c0
171 #define PMC_UTMIP_UHSIC_SLEEP_CFG1 0x4d0
172 #define PMC_UTMIP_SLEEPWALK_P3 0x4e0
173 /* Tegra186 and later */
174 #define WAKE_AOWAKE_CNTRL(x) (0x000 + ((x) << 2))
175 #define WAKE_AOWAKE_CNTRL_LEVEL (1 << 3)
176 #define WAKE_AOWAKE_MASK_W(x) (0x180 + ((x) << 2))
177 #define WAKE_AOWAKE_MASK_R(x) (0x300 + ((x) << 2))
178 #define WAKE_AOWAKE_STATUS_W(x) (0x30c + ((x) << 2))
179 #define WAKE_AOWAKE_STATUS_R(x) (0x48c + ((x) << 2))
180 #define WAKE_AOWAKE_TIER0_ROUTING(x) (0x4b4 + ((x) << 2))
181 #define WAKE_AOWAKE_TIER1_ROUTING(x) (0x4c0 + ((x) << 2))
182 #define WAKE_AOWAKE_TIER2_ROUTING(x) (0x4cc + ((x) << 2))
184 #define WAKE_AOWAKE_CTRL 0x4f4
185 #define WAKE_AOWAKE_CTRL_INTR_POLARITY BIT(0)
188 #define TEGRA_SMC_PMC 0xc2fffe00
189 #define TEGRA_SMC_PMC_READ 0xaa
190 #define TEGRA_SMC_PMC_WRITE 0xbb
199 #define to_pmc_clk(_hw) container_of(_hw, struct pmc_clk, hw)
201 struct pmc_clk_gate {
207 #define to_pmc_clk_gate(_hw) container_of(_hw, struct pmc_clk_gate, hw)
209 struct pmc_clk_init_data {
211 const char *const *parents;
218 static const char * const clk_out1_parents[] = { "osc", "osc_div2",
219 "osc_div4", "extern1",
222 static const char * const clk_out2_parents[] = { "osc", "osc_div2",
223 "osc_div4", "extern2",
226 static const char * const clk_out3_parents[] = { "osc", "osc_div2",
227 "osc_div4", "extern3",
230 static const struct pmc_clk_init_data tegra_pmc_clks_data[] = {
232 .name = "pmc_clk_out_1",
233 .parents = clk_out1_parents,
234 .num_parents = ARRAY_SIZE(clk_out1_parents),
235 .clk_id = TEGRA_PMC_CLK_OUT_1,
240 .name = "pmc_clk_out_2",
241 .parents = clk_out2_parents,
242 .num_parents = ARRAY_SIZE(clk_out2_parents),
243 .clk_id = TEGRA_PMC_CLK_OUT_2,
245 .force_en_shift = 10,
248 .name = "pmc_clk_out_3",
249 .parents = clk_out3_parents,
250 .num_parents = ARRAY_SIZE(clk_out3_parents),
251 .clk_id = TEGRA_PMC_CLK_OUT_3,
253 .force_en_shift = 18,
257 struct tegra_powergate {
258 struct generic_pm_domain genpd;
259 struct tegra_pmc *pmc;
262 unsigned int num_clks;
263 unsigned long *clk_rates;
264 struct reset_control *reset;
267 struct tegra_io_pad_soc {
268 enum tegra_io_pad id;
270 unsigned int voltage;
274 struct tegra_pmc_regs {
275 unsigned int scratch0;
276 unsigned int dpd_req;
277 unsigned int dpd_status;
278 unsigned int dpd2_req;
279 unsigned int dpd2_status;
280 unsigned int rst_status;
281 unsigned int rst_source_shift;
282 unsigned int rst_source_mask;
283 unsigned int rst_level_shift;
284 unsigned int rst_level_mask;
287 struct tegra_wake_event {
292 unsigned int instance;
297 #define TEGRA_WAKE_IRQ(_name, _id, _irq) \
303 .instance = UINT_MAX, \
308 #define TEGRA_WAKE_GPIO(_name, _id, _instance, _pin) \
314 .instance = _instance, \
319 struct tegra_pmc_soc {
320 unsigned int num_powergates;
321 const char *const *powergates;
322 unsigned int num_cpu_powergates;
323 const u8 *cpu_powergates;
325 bool has_tsense_reset;
327 bool needs_mbist_war;
328 bool has_impl_33v_pwr;
331 const struct tegra_io_pad_soc *io_pads;
332 unsigned int num_io_pads;
334 const struct pinctrl_pin_desc *pin_descs;
335 unsigned int num_pin_descs;
337 const struct tegra_pmc_regs *regs;
338 void (*init)(struct tegra_pmc *pmc);
339 void (*setup_irq_polarity)(struct tegra_pmc *pmc,
340 struct device_node *np,
342 int (*irq_set_wake)(struct irq_data *data, unsigned int on);
343 int (*irq_set_type)(struct irq_data *data, unsigned int type);
344 int (*powergate_set)(struct tegra_pmc *pmc, unsigned int id,
347 const char * const *reset_sources;
348 unsigned int num_reset_sources;
349 const char * const *reset_levels;
350 unsigned int num_reset_levels;
353 * These describe events that can wake the system from sleep (i.e.
354 * LP0 or SC7). Wakeup from other sleep states (such as LP1 or LP2)
355 * are dealt with in the LIC.
357 const struct tegra_wake_event *wake_events;
358 unsigned int num_wake_events;
360 const struct pmc_clk_init_data *pmc_clks_data;
361 unsigned int num_pmc_clks;
362 bool has_blink_output;
363 bool has_usb_sleepwalk;
364 bool supports_core_domain;
368 * struct tegra_pmc - NVIDIA Tegra PMC
369 * @dev: pointer to PMC device structure
370 * @base: pointer to I/O remapped register region
371 * @wake: pointer to I/O remapped region for WAKE registers
372 * @aotag: pointer to I/O remapped region for AOTAG registers
373 * @scratch: pointer to I/O remapped region for scratch registers
374 * @clk: pointer to pclk clock
375 * @soc: pointer to SoC data structure
376 * @tz_only: flag specifying if the PMC can only be accessed via TrustZone
377 * @debugfs: pointer to debugfs entry
378 * @rate: currently configured rate of pclk
379 * @suspend_mode: lowest suspend mode available
380 * @cpu_good_time: CPU power good time (in microseconds)
381 * @cpu_off_time: CPU power off time (in microsecends)
382 * @core_osc_time: core power good OSC time (in microseconds)
383 * @core_pmu_time: core power good PMU time (in microseconds)
384 * @core_off_time: core power off time (in microseconds)
385 * @corereq_high: core power request is active-high
386 * @sysclkreq_high: system clock request is active-high
387 * @combined_req: combined power request for CPU & core
388 * @cpu_pwr_good_en: CPU power good signal is enabled
389 * @lp0_vec_phys: physical base address of the LP0 warm boot code
390 * @lp0_vec_size: size of the LP0 warm boot code
391 * @powergates_available: Bitmap of available power gates
392 * @powergates_lock: mutex for power gate register access
393 * @pctl_dev: pin controller exposed by the PMC
394 * @domain: IRQ domain provided by the PMC
395 * @irq: chip implementation for the IRQ domain
396 * @clk_nb: pclk clock changes handler
397 * @core_domain_state_synced: flag marking the core domain's state as synced
398 * @core_domain_registered: flag marking the core domain as registered
405 void __iomem *scratch;
407 struct dentry *debugfs;
409 const struct tegra_pmc_soc *soc;
414 enum tegra_suspend_mode suspend_mode;
423 bool cpu_pwr_good_en;
426 DECLARE_BITMAP(powergates_available, TEGRA_POWERGATE_MAX);
428 struct mutex powergates_lock;
430 struct pinctrl_dev *pctl_dev;
432 struct irq_domain *domain;
435 struct notifier_block clk_nb;
437 bool core_domain_state_synced;
438 bool core_domain_registered;
441 static struct tegra_pmc *pmc = &(struct tegra_pmc) {
443 .suspend_mode = TEGRA_SUSPEND_NOT_READY,
446 static inline struct tegra_powergate *
447 to_powergate(struct generic_pm_domain *domain)
449 return container_of(domain, struct tegra_powergate, genpd);
452 static u32 tegra_pmc_readl(struct tegra_pmc *pmc, unsigned long offset)
454 struct arm_smccc_res res;
457 arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_READ, offset, 0, 0,
461 dev_warn(pmc->dev, "%s(): SMC failed: %lu\n",
464 pr_warn("%s(): SMC failed: %lu\n", __func__,
471 return readl(pmc->base + offset);
474 static void tegra_pmc_writel(struct tegra_pmc *pmc, u32 value,
475 unsigned long offset)
477 struct arm_smccc_res res;
480 arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_WRITE, offset,
481 value, 0, 0, 0, 0, &res);
484 dev_warn(pmc->dev, "%s(): SMC failed: %lu\n",
487 pr_warn("%s(): SMC failed: %lu\n", __func__,
491 writel(value, pmc->base + offset);
495 static u32 tegra_pmc_scratch_readl(struct tegra_pmc *pmc, unsigned long offset)
498 return tegra_pmc_readl(pmc, offset);
500 return readl(pmc->scratch + offset);
503 static void tegra_pmc_scratch_writel(struct tegra_pmc *pmc, u32 value,
504 unsigned long offset)
507 tegra_pmc_writel(pmc, value, offset);
509 writel(value, pmc->scratch + offset);
513 * TODO Figure out a way to call this with the struct tegra_pmc * passed in.
514 * This currently doesn't work because readx_poll_timeout() can only operate
515 * on functions that take a single argument.
517 static inline bool tegra_powergate_state(int id)
519 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
520 return (tegra_pmc_readl(pmc, GPU_RG_CNTRL) & 0x1) == 0;
522 return (tegra_pmc_readl(pmc, PWRGATE_STATUS) & BIT(id)) != 0;
525 static inline bool tegra_powergate_is_valid(struct tegra_pmc *pmc, int id)
527 return (pmc->soc && pmc->soc->powergates[id]);
530 static inline bool tegra_powergate_is_available(struct tegra_pmc *pmc, int id)
532 return test_bit(id, pmc->powergates_available);
535 static int tegra_powergate_lookup(struct tegra_pmc *pmc, const char *name)
539 if (!pmc || !pmc->soc || !name)
542 for (i = 0; i < pmc->soc->num_powergates; i++) {
543 if (!tegra_powergate_is_valid(pmc, i))
546 if (!strcmp(name, pmc->soc->powergates[i]))
553 static int tegra20_powergate_set(struct tegra_pmc *pmc, unsigned int id,
556 unsigned int retries = 100;
561 * As per TRM documentation, the toggle command will be dropped by PMC
562 * if there is contention with a HW-initiated toggling (i.e. CPU core
563 * power-gated), the command should be retried in that case.
566 tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
568 /* wait for PMC to execute the command */
569 ret = readx_poll_timeout(tegra_powergate_state, id, status,
570 status == new_state, 1, 10);
571 } while (ret == -ETIMEDOUT && retries--);
576 static inline bool tegra_powergate_toggle_ready(struct tegra_pmc *pmc)
578 return !(tegra_pmc_readl(pmc, PWRGATE_TOGGLE) & PWRGATE_TOGGLE_START);
581 static int tegra114_powergate_set(struct tegra_pmc *pmc, unsigned int id,
587 /* wait while PMC power gating is contended */
588 err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status,
589 status == true, 1, 100);
593 tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
595 /* wait for PMC to accept the command */
596 err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status,
597 status == true, 1, 100);
601 /* wait for PMC to execute the command */
602 err = readx_poll_timeout(tegra_powergate_state, id, status,
603 status == new_state, 10, 100000);
611 * tegra_powergate_set() - set the state of a partition
612 * @pmc: power management controller
614 * @new_state: new state of the partition
616 static int tegra_powergate_set(struct tegra_pmc *pmc, unsigned int id,
621 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
624 mutex_lock(&pmc->powergates_lock);
626 if (tegra_powergate_state(id) == new_state) {
627 mutex_unlock(&pmc->powergates_lock);
631 err = pmc->soc->powergate_set(pmc, id, new_state);
633 mutex_unlock(&pmc->powergates_lock);
638 static int __tegra_powergate_remove_clamping(struct tegra_pmc *pmc,
643 mutex_lock(&pmc->powergates_lock);
646 * On Tegra124 and later, the clamps for the GPU are controlled by a
647 * separate register (with different semantics).
649 if (id == TEGRA_POWERGATE_3D) {
650 if (pmc->soc->has_gpu_clamps) {
651 tegra_pmc_writel(pmc, 0, GPU_RG_CNTRL);
657 * Tegra 2 has a bug where PCIE and VDE clamping masks are
658 * swapped relatively to the partition ids
660 if (id == TEGRA_POWERGATE_VDEC)
661 mask = (1 << TEGRA_POWERGATE_PCIE);
662 else if (id == TEGRA_POWERGATE_PCIE)
663 mask = (1 << TEGRA_POWERGATE_VDEC);
667 tegra_pmc_writel(pmc, mask, REMOVE_CLAMPING);
670 mutex_unlock(&pmc->powergates_lock);
675 static int tegra_powergate_prepare_clocks(struct tegra_powergate *pg)
677 unsigned long safe_rate = 100 * 1000 * 1000;
681 for (i = 0; i < pg->num_clks; i++) {
682 pg->clk_rates[i] = clk_get_rate(pg->clks[i]);
684 if (!pg->clk_rates[i]) {
689 if (pg->clk_rates[i] <= safe_rate)
693 * We don't know whether voltage state is okay for the
694 * current clock rate, hence it's better to temporally
695 * switch clock to a safe rate which is suitable for
696 * all voltages, before enabling the clock.
698 err = clk_set_rate(pg->clks[i], safe_rate);
707 clk_set_rate(pg->clks[i], pg->clk_rates[i]);
712 static int tegra_powergate_unprepare_clocks(struct tegra_powergate *pg)
717 for (i = 0; i < pg->num_clks; i++) {
718 err = clk_set_rate(pg->clks[i], pg->clk_rates[i]);
726 static void tegra_powergate_disable_clocks(struct tegra_powergate *pg)
730 for (i = 0; i < pg->num_clks; i++)
731 clk_disable_unprepare(pg->clks[i]);
734 static int tegra_powergate_enable_clocks(struct tegra_powergate *pg)
739 for (i = 0; i < pg->num_clks; i++) {
740 err = clk_prepare_enable(pg->clks[i]);
749 clk_disable_unprepare(pg->clks[i]);
754 static int tegra_powergate_power_up(struct tegra_powergate *pg,
759 err = reset_control_assert(pg->reset);
763 usleep_range(10, 20);
765 err = tegra_powergate_set(pg->pmc, pg->id, true);
769 usleep_range(10, 20);
771 err = tegra_powergate_prepare_clocks(pg);
775 err = tegra_powergate_enable_clocks(pg);
779 usleep_range(10, 20);
781 err = __tegra_powergate_remove_clamping(pg->pmc, pg->id);
785 usleep_range(10, 20);
787 err = reset_control_deassert(pg->reset);
791 usleep_range(10, 20);
793 if (pg->pmc->soc->needs_mbist_war)
794 err = tegra210_clk_handle_mbist_war(pg->id);
799 tegra_powergate_disable_clocks(pg);
801 err = tegra_powergate_unprepare_clocks(pg);
808 tegra_powergate_disable_clocks(pg);
809 usleep_range(10, 20);
812 tegra_powergate_unprepare_clocks(pg);
815 tegra_powergate_set(pg->pmc, pg->id, false);
820 static int tegra_powergate_power_down(struct tegra_powergate *pg)
824 err = tegra_powergate_prepare_clocks(pg);
828 err = tegra_powergate_enable_clocks(pg);
832 usleep_range(10, 20);
834 err = reset_control_assert(pg->reset);
838 usleep_range(10, 20);
840 tegra_powergate_disable_clocks(pg);
842 usleep_range(10, 20);
844 err = tegra_powergate_set(pg->pmc, pg->id, false);
848 err = tegra_powergate_unprepare_clocks(pg);
855 tegra_powergate_enable_clocks(pg);
856 usleep_range(10, 20);
857 reset_control_deassert(pg->reset);
858 usleep_range(10, 20);
861 tegra_powergate_disable_clocks(pg);
864 tegra_powergate_unprepare_clocks(pg);
869 static int tegra_genpd_power_on(struct generic_pm_domain *domain)
871 struct tegra_powergate *pg = to_powergate(domain);
872 struct device *dev = pg->pmc->dev;
875 err = tegra_powergate_power_up(pg, true);
877 dev_err(dev, "failed to turn on PM domain %s: %d\n",
878 pg->genpd.name, err);
882 reset_control_release(pg->reset);
888 static int tegra_genpd_power_off(struct generic_pm_domain *domain)
890 struct tegra_powergate *pg = to_powergate(domain);
891 struct device *dev = pg->pmc->dev;
894 err = reset_control_acquire(pg->reset);
896 dev_err(dev, "failed to acquire resets for PM domain %s: %d\n",
897 pg->genpd.name, err);
901 err = tegra_powergate_power_down(pg);
903 dev_err(dev, "failed to turn off PM domain %s: %d\n",
904 pg->genpd.name, err);
905 reset_control_release(pg->reset);
912 * tegra_powergate_power_on() - power on partition
915 int tegra_powergate_power_on(unsigned int id)
917 if (!tegra_powergate_is_available(pmc, id))
920 return tegra_powergate_set(pmc, id, true);
922 EXPORT_SYMBOL(tegra_powergate_power_on);
925 * tegra_powergate_power_off() - power off partition
928 int tegra_powergate_power_off(unsigned int id)
930 if (!tegra_powergate_is_available(pmc, id))
933 return tegra_powergate_set(pmc, id, false);
935 EXPORT_SYMBOL(tegra_powergate_power_off);
938 * tegra_powergate_is_powered() - check if partition is powered
939 * @pmc: power management controller
942 static int tegra_powergate_is_powered(struct tegra_pmc *pmc, unsigned int id)
944 if (!tegra_powergate_is_valid(pmc, id))
947 return tegra_powergate_state(id);
951 * tegra_powergate_remove_clamping() - remove power clamps for partition
954 int tegra_powergate_remove_clamping(unsigned int id)
956 if (!tegra_powergate_is_available(pmc, id))
959 return __tegra_powergate_remove_clamping(pmc, id);
961 EXPORT_SYMBOL(tegra_powergate_remove_clamping);
964 * tegra_powergate_sequence_power_up() - power up partition
966 * @clk: clock for partition
967 * @rst: reset for partition
969 * Must be called with clk disabled, and returns with clk enabled.
971 int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
972 struct reset_control *rst)
974 struct tegra_powergate *pg;
977 if (!tegra_powergate_is_available(pmc, id))
980 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
984 pg->clk_rates = kzalloc(sizeof(*pg->clk_rates), GFP_KERNEL);
985 if (!pg->clk_rates) {
996 err = tegra_powergate_power_up(pg, false);
998 dev_err(pmc->dev, "failed to turn on partition %d: %d\n", id,
1001 kfree(pg->clk_rates);
1006 EXPORT_SYMBOL(tegra_powergate_sequence_power_up);
1009 * tegra_get_cpu_powergate_id() - convert from CPU ID to partition ID
1010 * @pmc: power management controller
1011 * @cpuid: CPU partition ID
1013 * Returns the partition ID corresponding to the CPU partition ID or a
1014 * negative error code on failure.
1016 static int tegra_get_cpu_powergate_id(struct tegra_pmc *pmc,
1019 if (pmc->soc && cpuid < pmc->soc->num_cpu_powergates)
1020 return pmc->soc->cpu_powergates[cpuid];
1026 * tegra_pmc_cpu_is_powered() - check if CPU partition is powered
1027 * @cpuid: CPU partition ID
1029 bool tegra_pmc_cpu_is_powered(unsigned int cpuid)
1033 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1037 return tegra_powergate_is_powered(pmc, id);
1041 * tegra_pmc_cpu_power_on() - power on CPU partition
1042 * @cpuid: CPU partition ID
1044 int tegra_pmc_cpu_power_on(unsigned int cpuid)
1048 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1052 return tegra_powergate_set(pmc, id, true);
1056 * tegra_pmc_cpu_remove_clamping() - remove power clamps for CPU partition
1057 * @cpuid: CPU partition ID
1059 int tegra_pmc_cpu_remove_clamping(unsigned int cpuid)
1063 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1067 return tegra_powergate_remove_clamping(id);
1070 static void tegra_pmc_program_reboot_reason(const char *cmd)
1074 value = tegra_pmc_scratch_readl(pmc, pmc->soc->regs->scratch0);
1075 value &= ~PMC_SCRATCH0_MODE_MASK;
1078 if (strcmp(cmd, "recovery") == 0)
1079 value |= PMC_SCRATCH0_MODE_RECOVERY;
1081 if (strcmp(cmd, "bootloader") == 0)
1082 value |= PMC_SCRATCH0_MODE_BOOTLOADER;
1084 if (strcmp(cmd, "forced-recovery") == 0)
1085 value |= PMC_SCRATCH0_MODE_RCM;
1088 tegra_pmc_scratch_writel(pmc, value, pmc->soc->regs->scratch0);
1091 static int tegra_pmc_reboot_notify(struct notifier_block *this,
1092 unsigned long action, void *data)
1094 if (action == SYS_RESTART)
1095 tegra_pmc_program_reboot_reason(data);
1100 static struct notifier_block tegra_pmc_reboot_notifier = {
1101 .notifier_call = tegra_pmc_reboot_notify,
1104 static int tegra_pmc_restart_notify(struct notifier_block *this,
1105 unsigned long action, void *data)
1109 /* reset everything but PMC_SCRATCH0 and PMC_RST_STATUS */
1110 value = tegra_pmc_readl(pmc, PMC_CNTRL);
1111 value |= PMC_CNTRL_MAIN_RST;
1112 tegra_pmc_writel(pmc, value, PMC_CNTRL);
1117 static struct notifier_block tegra_pmc_restart_handler = {
1118 .notifier_call = tegra_pmc_restart_notify,
1122 static int powergate_show(struct seq_file *s, void *data)
1127 seq_printf(s, " powergate powered\n");
1128 seq_printf(s, "------------------\n");
1130 for (i = 0; i < pmc->soc->num_powergates; i++) {
1131 status = tegra_powergate_is_powered(pmc, i);
1135 seq_printf(s, " %9s %7s\n", pmc->soc->powergates[i],
1136 status ? "yes" : "no");
1142 DEFINE_SHOW_ATTRIBUTE(powergate);
1144 static int tegra_powergate_debugfs_init(void)
1146 pmc->debugfs = debugfs_create_file("powergate", S_IRUGO, NULL, NULL,
1154 static int tegra_powergate_of_get_clks(struct tegra_powergate *pg,
1155 struct device_node *np)
1158 unsigned int i, count;
1161 count = of_clk_get_parent_count(np);
1165 pg->clks = kcalloc(count, sizeof(clk), GFP_KERNEL);
1169 pg->clk_rates = kcalloc(count, sizeof(*pg->clk_rates), GFP_KERNEL);
1170 if (!pg->clk_rates) {
1175 for (i = 0; i < count; i++) {
1176 pg->clks[i] = of_clk_get(np, i);
1177 if (IS_ERR(pg->clks[i])) {
1178 err = PTR_ERR(pg->clks[i]);
1183 pg->num_clks = count;
1189 clk_put(pg->clks[i]);
1191 kfree(pg->clk_rates);
1197 static int tegra_powergate_of_get_resets(struct tegra_powergate *pg,
1198 struct device_node *np, bool off)
1200 struct device *dev = pg->pmc->dev;
1203 pg->reset = of_reset_control_array_get_exclusive_released(np);
1204 if (IS_ERR(pg->reset)) {
1205 err = PTR_ERR(pg->reset);
1206 dev_err(dev, "failed to get device resets: %d\n", err);
1210 err = reset_control_acquire(pg->reset);
1212 pr_err("failed to acquire resets: %d\n", err);
1217 err = reset_control_assert(pg->reset);
1219 err = reset_control_deassert(pg->reset);
1223 reset_control_release(pg->reset);
1228 reset_control_release(pg->reset);
1229 reset_control_put(pg->reset);
1235 static int tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
1237 struct device *dev = pmc->dev;
1238 struct tegra_powergate *pg;
1242 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
1246 id = tegra_powergate_lookup(pmc, np->name);
1248 dev_err(dev, "powergate lookup failed for %pOFn: %d\n", np, id);
1254 * Clear the bit for this powergate so it cannot be managed
1255 * directly via the legacy APIs for controlling powergates.
1257 clear_bit(id, pmc->powergates_available);
1260 pg->genpd.name = np->name;
1261 pg->genpd.power_off = tegra_genpd_power_off;
1262 pg->genpd.power_on = tegra_genpd_power_on;
1265 off = !tegra_powergate_is_powered(pmc, pg->id);
1267 err = tegra_powergate_of_get_clks(pg, np);
1269 dev_err(dev, "failed to get clocks for %pOFn: %d\n", np, err);
1273 err = tegra_powergate_of_get_resets(pg, np, off);
1275 dev_err(dev, "failed to get resets for %pOFn: %d\n", np, err);
1279 if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) {
1281 WARN_ON(tegra_powergate_power_up(pg, true));
1286 err = pm_genpd_init(&pg->genpd, NULL, off);
1288 dev_err(dev, "failed to initialise PM domain %pOFn: %d\n", np,
1293 err = of_genpd_add_provider_simple(np, &pg->genpd);
1295 dev_err(dev, "failed to add PM domain provider for %pOFn: %d\n",
1300 dev_dbg(dev, "added PM domain %s\n", pg->genpd.name);
1305 pm_genpd_remove(&pg->genpd);
1308 reset_control_put(pg->reset);
1311 while (pg->num_clks--)
1312 clk_put(pg->clks[pg->num_clks]);
1317 set_bit(id, pmc->powergates_available);
1325 bool tegra_pmc_core_domain_state_synced(void)
1327 return pmc->core_domain_state_synced;
1331 tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd,
1334 struct dev_pm_opp *opp;
1337 opp = dev_pm_opp_find_level_ceil(&genpd->dev, &level);
1339 dev_err(&genpd->dev, "failed to find OPP for level %u: %pe\n",
1341 return PTR_ERR(opp);
1344 mutex_lock(&pmc->powergates_lock);
1345 err = dev_pm_opp_set_opp(pmc->dev, opp);
1346 mutex_unlock(&pmc->powergates_lock);
1348 dev_pm_opp_put(opp);
1351 dev_err(&genpd->dev, "failed to set voltage to %duV: %d\n",
1360 tegra_pmc_core_pd_opp_to_performance_state(struct generic_pm_domain *genpd,
1361 struct dev_pm_opp *opp)
1363 return dev_pm_opp_get_level(opp);
1366 static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np)
1368 struct generic_pm_domain *genpd;
1369 const char *rname = "core";
1372 genpd = devm_kzalloc(pmc->dev, sizeof(*genpd), GFP_KERNEL);
1376 genpd->name = "core";
1377 genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state;
1378 genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state;
1380 err = devm_pm_opp_set_regulators(pmc->dev, &rname, 1);
1382 return dev_err_probe(pmc->dev, err,
1383 "failed to set core OPP regulator\n");
1385 err = pm_genpd_init(genpd, NULL, false);
1387 dev_err(pmc->dev, "failed to init core genpd: %d\n", err);
1391 err = of_genpd_add_provider_simple(np, genpd);
1393 dev_err(pmc->dev, "failed to add core genpd: %d\n", err);
1397 pmc->core_domain_registered = true;
1402 pm_genpd_remove(genpd);
1407 static int tegra_powergate_init(struct tegra_pmc *pmc,
1408 struct device_node *parent)
1410 struct of_phandle_args child_args, parent_args;
1411 struct device_node *np, *child;
1415 * Core power domain is the parent of powergate domains, hence it
1416 * should be registered first.
1418 np = of_get_child_by_name(parent, "core-domain");
1420 err = tegra_pmc_core_pd_add(pmc, np);
1426 np = of_get_child_by_name(parent, "powergates");
1430 for_each_child_of_node(np, child) {
1431 err = tegra_powergate_add(pmc, child);
1437 if (of_parse_phandle_with_args(child, "power-domains",
1438 "#power-domain-cells",
1442 child_args.np = child;
1443 child_args.args_count = 0;
1445 err = of_genpd_add_subdomain(&parent_args, &child_args);
1446 of_node_put(parent_args.np);
1458 static void tegra_powergate_remove(struct generic_pm_domain *genpd)
1460 struct tegra_powergate *pg = to_powergate(genpd);
1462 reset_control_put(pg->reset);
1464 while (pg->num_clks--)
1465 clk_put(pg->clks[pg->num_clks]);
1469 set_bit(pg->id, pmc->powergates_available);
1474 static void tegra_powergate_remove_all(struct device_node *parent)
1476 struct generic_pm_domain *genpd;
1477 struct device_node *np, *child;
1479 np = of_get_child_by_name(parent, "powergates");
1483 for_each_child_of_node(np, child) {
1484 of_genpd_del_provider(child);
1486 genpd = of_genpd_remove_last(child);
1490 tegra_powergate_remove(genpd);
1495 np = of_get_child_by_name(parent, "core-domain");
1497 of_genpd_del_provider(np);
1498 of_genpd_remove_last(np);
1502 static const struct tegra_io_pad_soc *
1503 tegra_io_pad_find(struct tegra_pmc *pmc, enum tegra_io_pad id)
1507 for (i = 0; i < pmc->soc->num_io_pads; i++)
1508 if (pmc->soc->io_pads[i].id == id)
1509 return &pmc->soc->io_pads[i];
1514 static int tegra_io_pad_get_dpd_register_bit(struct tegra_pmc *pmc,
1515 enum tegra_io_pad id,
1516 unsigned long *request,
1517 unsigned long *status,
1520 const struct tegra_io_pad_soc *pad;
1522 pad = tegra_io_pad_find(pmc, id);
1524 dev_err(pmc->dev, "invalid I/O pad ID %u\n", id);
1528 if (pad->dpd == UINT_MAX)
1531 *mask = BIT(pad->dpd % 32);
1533 if (pad->dpd < 32) {
1534 *status = pmc->soc->regs->dpd_status;
1535 *request = pmc->soc->regs->dpd_req;
1537 *status = pmc->soc->regs->dpd2_status;
1538 *request = pmc->soc->regs->dpd2_req;
1544 static int tegra_io_pad_prepare(struct tegra_pmc *pmc, enum tegra_io_pad id,
1545 unsigned long *request, unsigned long *status,
1548 unsigned long rate, value;
1551 err = tegra_io_pad_get_dpd_register_bit(pmc, id, request, status, mask);
1558 dev_err(pmc->dev, "failed to get clock rate\n");
1562 tegra_pmc_writel(pmc, DPD_SAMPLE_ENABLE, DPD_SAMPLE);
1564 /* must be at least 200 ns, in APB (PCLK) clock cycles */
1565 value = DIV_ROUND_UP(1000000000, rate);
1566 value = DIV_ROUND_UP(200, value);
1567 tegra_pmc_writel(pmc, value, SEL_DPD_TIM);
1573 static int tegra_io_pad_poll(struct tegra_pmc *pmc, unsigned long offset,
1574 u32 mask, u32 val, unsigned long timeout)
1578 timeout = jiffies + msecs_to_jiffies(timeout);
1580 while (time_after(timeout, jiffies)) {
1581 value = tegra_pmc_readl(pmc, offset);
1582 if ((value & mask) == val)
1585 usleep_range(250, 1000);
1591 static void tegra_io_pad_unprepare(struct tegra_pmc *pmc)
1594 tegra_pmc_writel(pmc, DPD_SAMPLE_DISABLE, DPD_SAMPLE);
1598 * tegra_io_pad_power_enable() - enable power to I/O pad
1599 * @id: Tegra I/O pad ID for which to enable power
1601 * Returns: 0 on success or a negative error code on failure.
1603 int tegra_io_pad_power_enable(enum tegra_io_pad id)
1605 unsigned long request, status;
1609 mutex_lock(&pmc->powergates_lock);
1611 err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask);
1613 dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err);
1617 tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_OFF | mask, request);
1619 err = tegra_io_pad_poll(pmc, status, mask, 0, 250);
1621 dev_err(pmc->dev, "failed to enable I/O pad: %d\n", err);
1625 tegra_io_pad_unprepare(pmc);
1628 mutex_unlock(&pmc->powergates_lock);
1631 EXPORT_SYMBOL(tegra_io_pad_power_enable);
1634 * tegra_io_pad_power_disable() - disable power to I/O pad
1635 * @id: Tegra I/O pad ID for which to disable power
1637 * Returns: 0 on success or a negative error code on failure.
1639 int tegra_io_pad_power_disable(enum tegra_io_pad id)
1641 unsigned long request, status;
1645 mutex_lock(&pmc->powergates_lock);
1647 err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask);
1649 dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err);
1653 tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_ON | mask, request);
1655 err = tegra_io_pad_poll(pmc, status, mask, mask, 250);
1657 dev_err(pmc->dev, "failed to disable I/O pad: %d\n", err);
1661 tegra_io_pad_unprepare(pmc);
1664 mutex_unlock(&pmc->powergates_lock);
1667 EXPORT_SYMBOL(tegra_io_pad_power_disable);
1669 static int tegra_io_pad_is_powered(struct tegra_pmc *pmc, enum tegra_io_pad id)
1671 unsigned long request, status;
1675 err = tegra_io_pad_get_dpd_register_bit(pmc, id, &request, &status,
1680 value = tegra_pmc_readl(pmc, status);
1682 return !(value & mask);
1685 static int tegra_io_pad_set_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id,
1688 const struct tegra_io_pad_soc *pad;
1691 pad = tegra_io_pad_find(pmc, id);
1695 if (pad->voltage == UINT_MAX)
1698 mutex_lock(&pmc->powergates_lock);
1700 if (pmc->soc->has_impl_33v_pwr) {
1701 value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR);
1703 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1704 value &= ~BIT(pad->voltage);
1706 value |= BIT(pad->voltage);
1708 tegra_pmc_writel(pmc, value, PMC_IMPL_E_33V_PWR);
1710 /* write-enable PMC_PWR_DET_VALUE[pad->voltage] */
1711 value = tegra_pmc_readl(pmc, PMC_PWR_DET);
1712 value |= BIT(pad->voltage);
1713 tegra_pmc_writel(pmc, value, PMC_PWR_DET);
1715 /* update I/O voltage */
1716 value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE);
1718 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1719 value &= ~BIT(pad->voltage);
1721 value |= BIT(pad->voltage);
1723 tegra_pmc_writel(pmc, value, PMC_PWR_DET_VALUE);
1726 mutex_unlock(&pmc->powergates_lock);
1728 usleep_range(100, 250);
1733 static int tegra_io_pad_get_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id)
1735 const struct tegra_io_pad_soc *pad;
1738 pad = tegra_io_pad_find(pmc, id);
1742 if (pad->voltage == UINT_MAX)
1745 if (pmc->soc->has_impl_33v_pwr)
1746 value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR);
1748 value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE);
1750 if ((value & BIT(pad->voltage)) == 0)
1751 return TEGRA_IO_PAD_VOLTAGE_1V8;
1753 return TEGRA_IO_PAD_VOLTAGE_3V3;
1757 * tegra_io_rail_power_on() - enable power to I/O rail
1758 * @id: Tegra I/O pad ID for which to enable power
1760 * See also: tegra_io_pad_power_enable()
1762 int tegra_io_rail_power_on(unsigned int id)
1764 return tegra_io_pad_power_enable(id);
1766 EXPORT_SYMBOL(tegra_io_rail_power_on);
1769 * tegra_io_rail_power_off() - disable power to I/O rail
1770 * @id: Tegra I/O pad ID for which to disable power
1772 * See also: tegra_io_pad_power_disable()
1774 int tegra_io_rail_power_off(unsigned int id)
1776 return tegra_io_pad_power_disable(id);
1778 EXPORT_SYMBOL(tegra_io_rail_power_off);
1780 #ifdef CONFIG_PM_SLEEP
1781 enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void)
1783 return pmc->suspend_mode;
1786 void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode)
1788 if (mode < TEGRA_SUSPEND_NONE || mode >= TEGRA_MAX_SUSPEND_MODE)
1791 pmc->suspend_mode = mode;
1794 void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode)
1796 unsigned long long rate = 0;
1801 case TEGRA_SUSPEND_LP1:
1805 case TEGRA_SUSPEND_LP2:
1813 if (WARN_ON_ONCE(rate == 0))
1816 ticks = pmc->cpu_good_time * rate + USEC_PER_SEC - 1;
1817 do_div(ticks, USEC_PER_SEC);
1818 tegra_pmc_writel(pmc, ticks, PMC_CPUPWRGOOD_TIMER);
1820 ticks = pmc->cpu_off_time * rate + USEC_PER_SEC - 1;
1821 do_div(ticks, USEC_PER_SEC);
1822 tegra_pmc_writel(pmc, ticks, PMC_CPUPWROFF_TIMER);
1824 value = tegra_pmc_readl(pmc, PMC_CNTRL);
1825 value &= ~PMC_CNTRL_SIDE_EFFECT_LP0;
1826 value |= PMC_CNTRL_CPU_PWRREQ_OE;
1827 tegra_pmc_writel(pmc, value, PMC_CNTRL);
1831 static int tegra_pmc_parse_dt(struct tegra_pmc *pmc, struct device_node *np)
1833 u32 value, values[2];
1835 if (of_property_read_u32(np, "nvidia,suspend-mode", &value)) {
1836 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1840 pmc->suspend_mode = TEGRA_SUSPEND_LP0;
1844 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1848 pmc->suspend_mode = TEGRA_SUSPEND_LP2;
1852 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1857 pmc->suspend_mode = tegra_pm_validate_suspend_mode(pmc->suspend_mode);
1859 if (of_property_read_u32(np, "nvidia,cpu-pwr-good-time", &value))
1860 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1862 pmc->cpu_good_time = value;
1864 if (of_property_read_u32(np, "nvidia,cpu-pwr-off-time", &value))
1865 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1867 pmc->cpu_off_time = value;
1869 if (of_property_read_u32_array(np, "nvidia,core-pwr-good-time",
1870 values, ARRAY_SIZE(values)))
1871 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1873 pmc->core_osc_time = values[0];
1874 pmc->core_pmu_time = values[1];
1876 if (of_property_read_u32(np, "nvidia,core-pwr-off-time", &value))
1877 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1879 pmc->core_off_time = value;
1881 pmc->corereq_high = of_property_read_bool(np,
1882 "nvidia,core-power-req-active-high");
1884 pmc->sysclkreq_high = of_property_read_bool(np,
1885 "nvidia,sys-clock-req-active-high");
1887 pmc->combined_req = of_property_read_bool(np,
1888 "nvidia,combined-power-req");
1890 pmc->cpu_pwr_good_en = of_property_read_bool(np,
1891 "nvidia,cpu-pwr-good-en");
1893 if (of_property_read_u32_array(np, "nvidia,lp0-vec", values,
1894 ARRAY_SIZE(values)))
1895 if (pmc->suspend_mode == TEGRA_SUSPEND_LP0)
1896 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1898 pmc->lp0_vec_phys = values[0];
1899 pmc->lp0_vec_size = values[1];
1904 static void tegra_pmc_init(struct tegra_pmc *pmc)
1907 pmc->soc->init(pmc);
1910 static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc)
1912 static const char disabled[] = "emergency thermal reset disabled";
1913 u32 pmu_addr, ctrl_id, reg_addr, reg_data, pinmux;
1914 struct device *dev = pmc->dev;
1915 struct device_node *np;
1916 u32 value, checksum;
1918 if (!pmc->soc->has_tsense_reset)
1921 np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip");
1923 dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled);
1927 if (of_property_read_u32(np, "nvidia,i2c-controller-id", &ctrl_id)) {
1928 dev_err(dev, "I2C controller ID missing, %s.\n", disabled);
1932 if (of_property_read_u32(np, "nvidia,bus-addr", &pmu_addr)) {
1933 dev_err(dev, "nvidia,bus-addr missing, %s.\n", disabled);
1937 if (of_property_read_u32(np, "nvidia,reg-addr", ®_addr)) {
1938 dev_err(dev, "nvidia,reg-addr missing, %s.\n", disabled);
1942 if (of_property_read_u32(np, "nvidia,reg-data", ®_data)) {
1943 dev_err(dev, "nvidia,reg-data missing, %s.\n", disabled);
1947 if (of_property_read_u32(np, "nvidia,pinmux-id", &pinmux))
1950 value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL);
1951 value |= PMC_SENSOR_CTRL_SCRATCH_WRITE;
1952 tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL);
1954 value = (reg_data << PMC_SCRATCH54_DATA_SHIFT) |
1955 (reg_addr << PMC_SCRATCH54_ADDR_SHIFT);
1956 tegra_pmc_writel(pmc, value, PMC_SCRATCH54);
1958 value = PMC_SCRATCH55_RESET_TEGRA;
1959 value |= ctrl_id << PMC_SCRATCH55_CNTRL_ID_SHIFT;
1960 value |= pinmux << PMC_SCRATCH55_PINMUX_SHIFT;
1961 value |= pmu_addr << PMC_SCRATCH55_I2CSLV1_SHIFT;
1964 * Calculate checksum of SCRATCH54, SCRATCH55 fields. Bits 23:16 will
1965 * contain the checksum and are currently zero, so they are not added.
1967 checksum = reg_addr + reg_data + (value & 0xff) + ((value >> 8) & 0xff)
1968 + ((value >> 24) & 0xff);
1970 checksum = 0x100 - checksum;
1972 value |= checksum << PMC_SCRATCH55_CHECKSUM_SHIFT;
1974 tegra_pmc_writel(pmc, value, PMC_SCRATCH55);
1976 value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL);
1977 value |= PMC_SENSOR_CTRL_ENABLE_RST;
1978 tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL);
1980 dev_info(pmc->dev, "emergency thermal reset enabled\n");
1986 static int tegra_io_pad_pinctrl_get_groups_count(struct pinctrl_dev *pctl_dev)
1988 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
1990 return pmc->soc->num_io_pads;
1993 static const char *tegra_io_pad_pinctrl_get_group_name(struct pinctrl_dev *pctl,
1996 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl);
1998 return pmc->soc->io_pads[group].name;
2001 static int tegra_io_pad_pinctrl_get_group_pins(struct pinctrl_dev *pctl_dev,
2003 const unsigned int **pins,
2004 unsigned int *num_pins)
2006 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2008 *pins = &pmc->soc->io_pads[group].id;
2014 static const struct pinctrl_ops tegra_io_pad_pinctrl_ops = {
2015 .get_groups_count = tegra_io_pad_pinctrl_get_groups_count,
2016 .get_group_name = tegra_io_pad_pinctrl_get_group_name,
2017 .get_group_pins = tegra_io_pad_pinctrl_get_group_pins,
2018 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
2019 .dt_free_map = pinconf_generic_dt_free_map,
2022 static int tegra_io_pad_pinconf_get(struct pinctrl_dev *pctl_dev,
2023 unsigned int pin, unsigned long *config)
2025 enum pin_config_param param = pinconf_to_config_param(*config);
2026 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2027 const struct tegra_io_pad_soc *pad;
2031 pad = tegra_io_pad_find(pmc, pin);
2036 case PIN_CONFIG_POWER_SOURCE:
2037 ret = tegra_io_pad_get_voltage(pmc, pad->id);
2044 case PIN_CONFIG_MODE_LOW_POWER:
2045 ret = tegra_io_pad_is_powered(pmc, pad->id);
2056 *config = pinconf_to_config_packed(param, arg);
2061 static int tegra_io_pad_pinconf_set(struct pinctrl_dev *pctl_dev,
2062 unsigned int pin, unsigned long *configs,
2063 unsigned int num_configs)
2065 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2066 const struct tegra_io_pad_soc *pad;
2067 enum pin_config_param param;
2072 pad = tegra_io_pad_find(pmc, pin);
2076 for (i = 0; i < num_configs; ++i) {
2077 param = pinconf_to_config_param(configs[i]);
2078 arg = pinconf_to_config_argument(configs[i]);
2081 case PIN_CONFIG_MODE_LOW_POWER:
2083 err = tegra_io_pad_power_disable(pad->id);
2085 err = tegra_io_pad_power_enable(pad->id);
2089 case PIN_CONFIG_POWER_SOURCE:
2090 if (arg != TEGRA_IO_PAD_VOLTAGE_1V8 &&
2091 arg != TEGRA_IO_PAD_VOLTAGE_3V3)
2093 err = tegra_io_pad_set_voltage(pmc, pad->id, arg);
2105 static const struct pinconf_ops tegra_io_pad_pinconf_ops = {
2106 .pin_config_get = tegra_io_pad_pinconf_get,
2107 .pin_config_set = tegra_io_pad_pinconf_set,
2111 static struct pinctrl_desc tegra_pmc_pctl_desc = {
2112 .pctlops = &tegra_io_pad_pinctrl_ops,
2113 .confops = &tegra_io_pad_pinconf_ops,
2116 static int tegra_pmc_pinctrl_init(struct tegra_pmc *pmc)
2120 if (!pmc->soc->num_pin_descs)
2123 tegra_pmc_pctl_desc.name = dev_name(pmc->dev);
2124 tegra_pmc_pctl_desc.pins = pmc->soc->pin_descs;
2125 tegra_pmc_pctl_desc.npins = pmc->soc->num_pin_descs;
2127 pmc->pctl_dev = devm_pinctrl_register(pmc->dev, &tegra_pmc_pctl_desc,
2129 if (IS_ERR(pmc->pctl_dev)) {
2130 err = PTR_ERR(pmc->pctl_dev);
2131 dev_err(pmc->dev, "failed to register pin controller: %d\n",
2139 static ssize_t reset_reason_show(struct device *dev,
2140 struct device_attribute *attr, char *buf)
2144 value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status);
2145 value &= pmc->soc->regs->rst_source_mask;
2146 value >>= pmc->soc->regs->rst_source_shift;
2148 if (WARN_ON(value >= pmc->soc->num_reset_sources))
2149 return sprintf(buf, "%s\n", "UNKNOWN");
2151 return sprintf(buf, "%s\n", pmc->soc->reset_sources[value]);
2154 static DEVICE_ATTR_RO(reset_reason);
2156 static ssize_t reset_level_show(struct device *dev,
2157 struct device_attribute *attr, char *buf)
2161 value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status);
2162 value &= pmc->soc->regs->rst_level_mask;
2163 value >>= pmc->soc->regs->rst_level_shift;
2165 if (WARN_ON(value >= pmc->soc->num_reset_levels))
2166 return sprintf(buf, "%s\n", "UNKNOWN");
2168 return sprintf(buf, "%s\n", pmc->soc->reset_levels[value]);
2171 static DEVICE_ATTR_RO(reset_level);
2173 static void tegra_pmc_reset_sysfs_init(struct tegra_pmc *pmc)
2175 struct device *dev = pmc->dev;
2178 if (pmc->soc->reset_sources) {
2179 err = device_create_file(dev, &dev_attr_reset_reason);
2182 "failed to create attr \"reset_reason\": %d\n",
2186 if (pmc->soc->reset_levels) {
2187 err = device_create_file(dev, &dev_attr_reset_level);
2190 "failed to create attr \"reset_level\": %d\n",
2195 static int tegra_pmc_irq_translate(struct irq_domain *domain,
2196 struct irq_fwspec *fwspec,
2197 unsigned long *hwirq,
2200 if (WARN_ON(fwspec->param_count < 2))
2203 *hwirq = fwspec->param[0];
2204 *type = fwspec->param[1];
2209 static int tegra_pmc_irq_alloc(struct irq_domain *domain, unsigned int virq,
2210 unsigned int num_irqs, void *data)
2212 struct tegra_pmc *pmc = domain->host_data;
2213 const struct tegra_pmc_soc *soc = pmc->soc;
2214 struct irq_fwspec *fwspec = data;
2218 if (WARN_ON(num_irqs > 1))
2221 for (i = 0; i < soc->num_wake_events; i++) {
2222 const struct tegra_wake_event *event = &soc->wake_events[i];
2224 if (fwspec->param_count == 2) {
2225 struct irq_fwspec spec;
2227 if (event->id != fwspec->param[0])
2230 err = irq_domain_set_hwirq_and_chip(domain, virq,
2236 spec.fwnode = &pmc->dev->of_node->fwnode;
2237 spec.param_count = 3;
2238 spec.param[0] = GIC_SPI;
2239 spec.param[1] = event->irq;
2240 spec.param[2] = fwspec->param[1];
2242 err = irq_domain_alloc_irqs_parent(domain, virq,
2248 if (fwspec->param_count == 3) {
2249 if (event->gpio.instance != fwspec->param[0] ||
2250 event->gpio.pin != fwspec->param[1])
2253 err = irq_domain_set_hwirq_and_chip(domain, virq,
2257 /* GPIO hierarchies stop at the PMC level */
2258 if (!err && domain->parent)
2259 err = irq_domain_disconnect_hierarchy(domain->parent,
2265 /* If there is no wake-up event, there is no PMC mapping */
2266 if (i == soc->num_wake_events)
2267 err = irq_domain_disconnect_hierarchy(domain, virq);
2272 static const struct irq_domain_ops tegra_pmc_irq_domain_ops = {
2273 .translate = tegra_pmc_irq_translate,
2274 .alloc = tegra_pmc_irq_alloc,
2277 static int tegra210_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
2279 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2280 unsigned int offset, bit;
2283 offset = data->hwirq / 32;
2284 bit = data->hwirq % 32;
2286 /* clear wake status */
2287 tegra_pmc_writel(pmc, 0, PMC_SW_WAKE_STATUS);
2288 tegra_pmc_writel(pmc, 0, PMC_SW_WAKE2_STATUS);
2290 tegra_pmc_writel(pmc, 0, PMC_WAKE_STATUS);
2291 tegra_pmc_writel(pmc, 0, PMC_WAKE2_STATUS);
2293 /* enable PMC wake */
2294 if (data->hwirq >= 32)
2295 offset = PMC_WAKE2_MASK;
2297 offset = PMC_WAKE_MASK;
2299 value = tegra_pmc_readl(pmc, offset);
2306 tegra_pmc_writel(pmc, value, offset);
2311 static int tegra210_pmc_irq_set_type(struct irq_data *data, unsigned int type)
2313 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2314 unsigned int offset, bit;
2317 offset = data->hwirq / 32;
2318 bit = data->hwirq % 32;
2320 if (data->hwirq >= 32)
2321 offset = PMC_WAKE2_LEVEL;
2323 offset = PMC_WAKE_LEVEL;
2325 value = tegra_pmc_readl(pmc, offset);
2328 case IRQ_TYPE_EDGE_RISING:
2329 case IRQ_TYPE_LEVEL_HIGH:
2333 case IRQ_TYPE_EDGE_FALLING:
2334 case IRQ_TYPE_LEVEL_LOW:
2338 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
2346 tegra_pmc_writel(pmc, value, offset);
2351 static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
2353 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2354 unsigned int offset, bit;
2357 offset = data->hwirq / 32;
2358 bit = data->hwirq % 32;
2360 /* clear wake status */
2361 writel(0x1, pmc->wake + WAKE_AOWAKE_STATUS_W(data->hwirq));
2363 /* route wake to tier 2 */
2364 value = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
2367 value &= ~(1 << bit);
2371 writel(value, pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
2373 /* enable wakeup event */
2374 writel(!!on, pmc->wake + WAKE_AOWAKE_MASK_W(data->hwirq));
2379 static int tegra186_pmc_irq_set_type(struct irq_data *data, unsigned int type)
2381 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2384 value = readl(pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
2387 case IRQ_TYPE_EDGE_RISING:
2388 case IRQ_TYPE_LEVEL_HIGH:
2389 value |= WAKE_AOWAKE_CNTRL_LEVEL;
2392 case IRQ_TYPE_EDGE_FALLING:
2393 case IRQ_TYPE_LEVEL_LOW:
2394 value &= ~WAKE_AOWAKE_CNTRL_LEVEL;
2397 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
2398 value ^= WAKE_AOWAKE_CNTRL_LEVEL;
2405 writel(value, pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
2410 static void tegra_irq_mask_parent(struct irq_data *data)
2412 if (data->parent_data)
2413 irq_chip_mask_parent(data);
2416 static void tegra_irq_unmask_parent(struct irq_data *data)
2418 if (data->parent_data)
2419 irq_chip_unmask_parent(data);
2422 static void tegra_irq_eoi_parent(struct irq_data *data)
2424 if (data->parent_data)
2425 irq_chip_eoi_parent(data);
2428 static int tegra_irq_set_affinity_parent(struct irq_data *data,
2429 const struct cpumask *dest,
2432 if (data->parent_data)
2433 return irq_chip_set_affinity_parent(data, dest, force);
2438 static int tegra_pmc_irq_init(struct tegra_pmc *pmc)
2440 struct irq_domain *parent = NULL;
2441 struct device_node *np;
2443 np = of_irq_find_parent(pmc->dev->of_node);
2445 parent = irq_find_host(np);
2452 pmc->irq.name = dev_name(pmc->dev);
2453 pmc->irq.irq_mask = tegra_irq_mask_parent;
2454 pmc->irq.irq_unmask = tegra_irq_unmask_parent;
2455 pmc->irq.irq_eoi = tegra_irq_eoi_parent;
2456 pmc->irq.irq_set_affinity = tegra_irq_set_affinity_parent;
2457 pmc->irq.irq_set_type = pmc->soc->irq_set_type;
2458 pmc->irq.irq_set_wake = pmc->soc->irq_set_wake;
2460 pmc->domain = irq_domain_add_hierarchy(parent, 0, 96, pmc->dev->of_node,
2461 &tegra_pmc_irq_domain_ops, pmc);
2463 dev_err(pmc->dev, "failed to allocate domain\n");
2470 static int tegra_pmc_clk_notify_cb(struct notifier_block *nb,
2471 unsigned long action, void *ptr)
2473 struct tegra_pmc *pmc = container_of(nb, struct tegra_pmc, clk_nb);
2474 struct clk_notifier_data *data = ptr;
2477 case PRE_RATE_CHANGE:
2478 mutex_lock(&pmc->powergates_lock);
2481 case POST_RATE_CHANGE:
2482 pmc->rate = data->new_rate;
2485 case ABORT_RATE_CHANGE:
2486 mutex_unlock(&pmc->powergates_lock);
2491 return notifier_from_errno(-EINVAL);
2497 static void pmc_clk_fence_udelay(u32 offset)
2499 tegra_pmc_readl(pmc, offset);
2500 /* pmc clk propagation delay 2 us */
2504 static u8 pmc_clk_mux_get_parent(struct clk_hw *hw)
2506 struct pmc_clk *clk = to_pmc_clk(hw);
2509 val = tegra_pmc_readl(pmc, clk->offs) >> clk->mux_shift;
2510 val &= PMC_CLK_OUT_MUX_MASK;
2515 static int pmc_clk_mux_set_parent(struct clk_hw *hw, u8 index)
2517 struct pmc_clk *clk = to_pmc_clk(hw);
2520 val = tegra_pmc_readl(pmc, clk->offs);
2521 val &= ~(PMC_CLK_OUT_MUX_MASK << clk->mux_shift);
2522 val |= index << clk->mux_shift;
2523 tegra_pmc_writel(pmc, val, clk->offs);
2524 pmc_clk_fence_udelay(clk->offs);
2529 static int pmc_clk_is_enabled(struct clk_hw *hw)
2531 struct pmc_clk *clk = to_pmc_clk(hw);
2534 val = tegra_pmc_readl(pmc, clk->offs) & BIT(clk->force_en_shift);
2539 static void pmc_clk_set_state(unsigned long offs, u32 shift, int state)
2543 val = tegra_pmc_readl(pmc, offs);
2544 val = state ? (val | BIT(shift)) : (val & ~BIT(shift));
2545 tegra_pmc_writel(pmc, val, offs);
2546 pmc_clk_fence_udelay(offs);
2549 static int pmc_clk_enable(struct clk_hw *hw)
2551 struct pmc_clk *clk = to_pmc_clk(hw);
2553 pmc_clk_set_state(clk->offs, clk->force_en_shift, 1);
2558 static void pmc_clk_disable(struct clk_hw *hw)
2560 struct pmc_clk *clk = to_pmc_clk(hw);
2562 pmc_clk_set_state(clk->offs, clk->force_en_shift, 0);
2565 static const struct clk_ops pmc_clk_ops = {
2566 .get_parent = pmc_clk_mux_get_parent,
2567 .set_parent = pmc_clk_mux_set_parent,
2568 .determine_rate = __clk_mux_determine_rate,
2569 .is_enabled = pmc_clk_is_enabled,
2570 .enable = pmc_clk_enable,
2571 .disable = pmc_clk_disable,
2575 tegra_pmc_clk_out_register(struct tegra_pmc *pmc,
2576 const struct pmc_clk_init_data *data,
2577 unsigned long offset)
2579 struct clk_init_data init;
2580 struct pmc_clk *pmc_clk;
2582 pmc_clk = devm_kzalloc(pmc->dev, sizeof(*pmc_clk), GFP_KERNEL);
2584 return ERR_PTR(-ENOMEM);
2586 init.name = data->name;
2587 init.ops = &pmc_clk_ops;
2588 init.parent_names = data->parents;
2589 init.num_parents = data->num_parents;
2590 init.flags = CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT |
2591 CLK_SET_PARENT_GATE;
2593 pmc_clk->hw.init = &init;
2594 pmc_clk->offs = offset;
2595 pmc_clk->mux_shift = data->mux_shift;
2596 pmc_clk->force_en_shift = data->force_en_shift;
2598 return clk_register(NULL, &pmc_clk->hw);
2601 static int pmc_clk_gate_is_enabled(struct clk_hw *hw)
2603 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2605 return tegra_pmc_readl(pmc, gate->offs) & BIT(gate->shift) ? 1 : 0;
2608 static int pmc_clk_gate_enable(struct clk_hw *hw)
2610 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2612 pmc_clk_set_state(gate->offs, gate->shift, 1);
2617 static void pmc_clk_gate_disable(struct clk_hw *hw)
2619 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2621 pmc_clk_set_state(gate->offs, gate->shift, 0);
2624 static const struct clk_ops pmc_clk_gate_ops = {
2625 .is_enabled = pmc_clk_gate_is_enabled,
2626 .enable = pmc_clk_gate_enable,
2627 .disable = pmc_clk_gate_disable,
2631 tegra_pmc_clk_gate_register(struct tegra_pmc *pmc, const char *name,
2632 const char *parent_name, unsigned long offset,
2635 struct clk_init_data init;
2636 struct pmc_clk_gate *gate;
2638 gate = devm_kzalloc(pmc->dev, sizeof(*gate), GFP_KERNEL);
2640 return ERR_PTR(-ENOMEM);
2643 init.ops = &pmc_clk_gate_ops;
2644 init.parent_names = &parent_name;
2645 init.num_parents = 1;
2648 gate->hw.init = &init;
2649 gate->offs = offset;
2650 gate->shift = shift;
2652 return clk_register(NULL, &gate->hw);
2655 static void tegra_pmc_clock_register(struct tegra_pmc *pmc,
2656 struct device_node *np)
2659 struct clk_onecell_data *clk_data;
2660 unsigned int num_clks;
2663 num_clks = pmc->soc->num_pmc_clks;
2664 if (pmc->soc->has_blink_output)
2670 clk_data = devm_kmalloc(pmc->dev, sizeof(*clk_data), GFP_KERNEL);
2674 clk_data->clks = devm_kcalloc(pmc->dev, TEGRA_PMC_CLK_MAX,
2675 sizeof(*clk_data->clks), GFP_KERNEL);
2676 if (!clk_data->clks)
2679 clk_data->clk_num = TEGRA_PMC_CLK_MAX;
2681 for (i = 0; i < TEGRA_PMC_CLK_MAX; i++)
2682 clk_data->clks[i] = ERR_PTR(-ENOENT);
2684 for (i = 0; i < pmc->soc->num_pmc_clks; i++) {
2685 const struct pmc_clk_init_data *data;
2687 data = pmc->soc->pmc_clks_data + i;
2689 clk = tegra_pmc_clk_out_register(pmc, data, PMC_CLK_OUT_CNTRL);
2691 dev_warn(pmc->dev, "unable to register clock %s: %d\n",
2692 data->name, PTR_ERR_OR_ZERO(clk));
2696 err = clk_register_clkdev(clk, data->name, NULL);
2699 "unable to register %s clock lookup: %d\n",
2704 clk_data->clks[data->clk_id] = clk;
2707 if (pmc->soc->has_blink_output) {
2708 tegra_pmc_writel(pmc, 0x0, PMC_BLINK_TIMER);
2709 clk = tegra_pmc_clk_gate_register(pmc,
2710 "pmc_blink_override",
2713 PMC_DPD_PADS_ORIDE_BLINK);
2716 "unable to register pmc_blink_override: %d\n",
2717 PTR_ERR_OR_ZERO(clk));
2721 clk = tegra_pmc_clk_gate_register(pmc, "pmc_blink",
2722 "pmc_blink_override",
2724 PMC_CNTRL_BLINK_EN);
2727 "unable to register pmc_blink: %d\n",
2728 PTR_ERR_OR_ZERO(clk));
2732 err = clk_register_clkdev(clk, "pmc_blink", NULL);
2735 "unable to register pmc_blink lookup: %d\n",
2740 clk_data->clks[TEGRA_PMC_CLK_BLINK] = clk;
2743 err = of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
2745 dev_warn(pmc->dev, "failed to add pmc clock provider: %d\n",
2749 static const struct regmap_range pmc_usb_sleepwalk_ranges[] = {
2750 regmap_reg_range(PMC_USB_DEBOUNCE_DEL, PMC_USB_AO),
2751 regmap_reg_range(PMC_UTMIP_UHSIC_TRIGGERS, PMC_UTMIP_UHSIC_SAVED_STATE),
2752 regmap_reg_range(PMC_UTMIP_TERM_PAD_CFG, PMC_UTMIP_UHSIC_FAKE),
2753 regmap_reg_range(PMC_UTMIP_UHSIC_LINE_WAKEUP, PMC_UTMIP_UHSIC_LINE_WAKEUP),
2754 regmap_reg_range(PMC_UTMIP_BIAS_MASTER_CNTRL, PMC_UTMIP_MASTER_CONFIG),
2755 regmap_reg_range(PMC_UTMIP_UHSIC2_TRIGGERS, PMC_UTMIP_MASTER2_CONFIG),
2756 regmap_reg_range(PMC_UTMIP_PAD_CFG0, PMC_UTMIP_UHSIC_SLEEP_CFG1),
2757 regmap_reg_range(PMC_UTMIP_SLEEPWALK_P3, PMC_UTMIP_SLEEPWALK_P3),
2760 static const struct regmap_access_table pmc_usb_sleepwalk_table = {
2761 .yes_ranges = pmc_usb_sleepwalk_ranges,
2762 .n_yes_ranges = ARRAY_SIZE(pmc_usb_sleepwalk_ranges),
2765 static int tegra_pmc_regmap_readl(void *context, unsigned int offset, unsigned int *value)
2767 struct tegra_pmc *pmc = context;
2769 *value = tegra_pmc_readl(pmc, offset);
2773 static int tegra_pmc_regmap_writel(void *context, unsigned int offset, unsigned int value)
2775 struct tegra_pmc *pmc = context;
2777 tegra_pmc_writel(pmc, value, offset);
2781 static const struct regmap_config usb_sleepwalk_regmap_config = {
2782 .name = "usb_sleepwalk",
2787 .rd_table = &pmc_usb_sleepwalk_table,
2788 .wr_table = &pmc_usb_sleepwalk_table,
2789 .reg_read = tegra_pmc_regmap_readl,
2790 .reg_write = tegra_pmc_regmap_writel,
2793 static int tegra_pmc_regmap_init(struct tegra_pmc *pmc)
2795 struct regmap *regmap;
2798 if (pmc->soc->has_usb_sleepwalk) {
2799 regmap = devm_regmap_init(pmc->dev, NULL, pmc, &usb_sleepwalk_regmap_config);
2800 if (IS_ERR(regmap)) {
2801 err = PTR_ERR(regmap);
2802 dev_err(pmc->dev, "failed to allocate register map (%d)\n", err);
2810 static void tegra_pmc_reset_suspend_mode(void *data)
2812 pmc->suspend_mode = TEGRA_SUSPEND_NOT_READY;
2815 static int tegra_pmc_probe(struct platform_device *pdev)
2818 struct resource *res;
2822 * Early initialisation should have configured an initial
2823 * register mapping and setup the soc data pointer. If these
2824 * are not valid then something went badly wrong!
2826 if (WARN_ON(!pmc->base || !pmc->soc))
2829 err = tegra_pmc_parse_dt(pmc, pdev->dev.of_node);
2833 err = devm_add_action_or_reset(&pdev->dev, tegra_pmc_reset_suspend_mode,
2838 /* take over the memory region from the early initialization */
2839 base = devm_platform_ioremap_resource(pdev, 0);
2841 return PTR_ERR(base);
2843 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wake");
2845 pmc->wake = devm_ioremap_resource(&pdev->dev, res);
2846 if (IS_ERR(pmc->wake))
2847 return PTR_ERR(pmc->wake);
2852 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aotag");
2854 pmc->aotag = devm_ioremap_resource(&pdev->dev, res);
2855 if (IS_ERR(pmc->aotag))
2856 return PTR_ERR(pmc->aotag);
2861 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scratch");
2863 pmc->scratch = devm_ioremap_resource(&pdev->dev, res);
2864 if (IS_ERR(pmc->scratch))
2865 return PTR_ERR(pmc->scratch);
2867 pmc->scratch = base;
2870 pmc->clk = devm_clk_get(&pdev->dev, "pclk");
2871 if (IS_ERR(pmc->clk)) {
2872 err = PTR_ERR(pmc->clk);
2874 if (err != -ENOENT) {
2875 dev_err(&pdev->dev, "failed to get pclk: %d\n", err);
2883 * PCLK clock rate can't be retrieved using CLK API because it
2884 * causes lockup if CPU enters LP2 idle state from some other
2885 * CLK notifier, hence we're caching the rate's value locally.
2888 pmc->clk_nb.notifier_call = tegra_pmc_clk_notify_cb;
2889 err = clk_notifier_register(pmc->clk, &pmc->clk_nb);
2892 "failed to register clk notifier\n");
2896 pmc->rate = clk_get_rate(pmc->clk);
2899 pmc->dev = &pdev->dev;
2901 tegra_pmc_init(pmc);
2903 tegra_pmc_init_tsense_reset(pmc);
2905 tegra_pmc_reset_sysfs_init(pmc);
2907 if (IS_ENABLED(CONFIG_DEBUG_FS)) {
2908 err = tegra_powergate_debugfs_init();
2913 err = devm_register_reboot_notifier(&pdev->dev,
2914 &tegra_pmc_reboot_notifier);
2916 dev_err(&pdev->dev, "unable to register reboot notifier, %d\n",
2918 goto cleanup_debugfs;
2921 err = register_restart_handler(&tegra_pmc_restart_handler);
2923 dev_err(&pdev->dev, "unable to register restart handler, %d\n",
2925 goto cleanup_debugfs;
2928 err = tegra_pmc_pinctrl_init(pmc);
2930 goto cleanup_restart_handler;
2932 err = tegra_pmc_regmap_init(pmc);
2934 goto cleanup_restart_handler;
2936 err = tegra_powergate_init(pmc, pdev->dev.of_node);
2938 goto cleanup_powergates;
2940 err = tegra_pmc_irq_init(pmc);
2942 goto cleanup_powergates;
2944 mutex_lock(&pmc->powergates_lock);
2947 mutex_unlock(&pmc->powergates_lock);
2949 tegra_pmc_clock_register(pmc, pdev->dev.of_node);
2950 platform_set_drvdata(pdev, pmc);
2951 tegra_pm_init_suspend();
2956 tegra_powergate_remove_all(pdev->dev.of_node);
2957 cleanup_restart_handler:
2958 unregister_restart_handler(&tegra_pmc_restart_handler);
2960 debugfs_remove(pmc->debugfs);
2962 device_remove_file(&pdev->dev, &dev_attr_reset_reason);
2963 device_remove_file(&pdev->dev, &dev_attr_reset_level);
2964 clk_notifier_unregister(pmc->clk, &pmc->clk_nb);
2969 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
2970 static int tegra_pmc_suspend(struct device *dev)
2972 struct tegra_pmc *pmc = dev_get_drvdata(dev);
2974 tegra_pmc_writel(pmc, virt_to_phys(tegra_resume), PMC_SCRATCH41);
2979 static int tegra_pmc_resume(struct device *dev)
2981 struct tegra_pmc *pmc = dev_get_drvdata(dev);
2983 tegra_pmc_writel(pmc, 0x0, PMC_SCRATCH41);
2988 static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume);
2992 static const char * const tegra20_powergates[] = {
2993 [TEGRA_POWERGATE_CPU] = "cpu",
2994 [TEGRA_POWERGATE_3D] = "td",
2995 [TEGRA_POWERGATE_VENC] = "venc",
2996 [TEGRA_POWERGATE_VDEC] = "vdec",
2997 [TEGRA_POWERGATE_PCIE] = "pcie",
2998 [TEGRA_POWERGATE_L2] = "l2",
2999 [TEGRA_POWERGATE_MPE] = "mpe",
3002 static const struct tegra_pmc_regs tegra20_pmc_regs = {
3005 .dpd_status = 0x1bc,
3007 .dpd2_status = 0x1c4,
3008 .rst_status = 0x1b4,
3009 .rst_source_shift = 0x0,
3010 .rst_source_mask = 0x7,
3011 .rst_level_shift = 0x0,
3012 .rst_level_mask = 0x0,
3015 static void tegra20_pmc_init(struct tegra_pmc *pmc)
3017 u32 value, osc, pmu, off;
3019 /* Always enable CPU power request */
3020 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3021 value |= PMC_CNTRL_CPU_PWRREQ_OE;
3022 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3024 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3026 if (pmc->sysclkreq_high)
3027 value &= ~PMC_CNTRL_SYSCLK_POLARITY;
3029 value |= PMC_CNTRL_SYSCLK_POLARITY;
3031 if (pmc->corereq_high)
3032 value &= ~PMC_CNTRL_PWRREQ_POLARITY;
3034 value |= PMC_CNTRL_PWRREQ_POLARITY;
3036 /* configure the output polarity while the request is tristated */
3037 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3039 /* now enable the request */
3040 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3041 value |= PMC_CNTRL_SYSCLK_OE;
3042 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3044 /* program core timings which are applicable only for suspend state */
3045 if (pmc->suspend_mode != TEGRA_SUSPEND_NONE) {
3046 osc = DIV_ROUND_UP(pmc->core_osc_time * 8192, 1000000);
3047 pmu = DIV_ROUND_UP(pmc->core_pmu_time * 32768, 1000000);
3048 off = DIV_ROUND_UP(pmc->core_off_time * 32768, 1000000);
3049 tegra_pmc_writel(pmc, ((osc << 8) & 0xff00) | (pmu & 0xff),
3050 PMC_COREPWRGOOD_TIMER);
3051 tegra_pmc_writel(pmc, off, PMC_COREPWROFF_TIMER);
3055 static void tegra20_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
3056 struct device_node *np,
3061 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3064 value |= PMC_CNTRL_INTR_POLARITY;
3066 value &= ~PMC_CNTRL_INTR_POLARITY;
3068 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3071 static const struct tegra_pmc_soc tegra20_pmc_soc = {
3072 .supports_core_domain = true,
3073 .num_powergates = ARRAY_SIZE(tegra20_powergates),
3074 .powergates = tegra20_powergates,
3075 .num_cpu_powergates = 0,
3076 .cpu_powergates = NULL,
3077 .has_tsense_reset = false,
3078 .has_gpu_clamps = false,
3079 .needs_mbist_war = false,
3080 .has_impl_33v_pwr = false,
3081 .maybe_tz_only = false,
3086 .regs = &tegra20_pmc_regs,
3087 .init = tegra20_pmc_init,
3088 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3089 .powergate_set = tegra20_powergate_set,
3090 .reset_sources = NULL,
3091 .num_reset_sources = 0,
3092 .reset_levels = NULL,
3093 .num_reset_levels = 0,
3094 .pmc_clks_data = NULL,
3096 .has_blink_output = true,
3097 .has_usb_sleepwalk = true,
3100 static const char * const tegra30_powergates[] = {
3101 [TEGRA_POWERGATE_CPU] = "cpu0",
3102 [TEGRA_POWERGATE_3D] = "td",
3103 [TEGRA_POWERGATE_VENC] = "venc",
3104 [TEGRA_POWERGATE_VDEC] = "vdec",
3105 [TEGRA_POWERGATE_PCIE] = "pcie",
3106 [TEGRA_POWERGATE_L2] = "l2",
3107 [TEGRA_POWERGATE_MPE] = "mpe",
3108 [TEGRA_POWERGATE_HEG] = "heg",
3109 [TEGRA_POWERGATE_SATA] = "sata",
3110 [TEGRA_POWERGATE_CPU1] = "cpu1",
3111 [TEGRA_POWERGATE_CPU2] = "cpu2",
3112 [TEGRA_POWERGATE_CPU3] = "cpu3",
3113 [TEGRA_POWERGATE_CELP] = "celp",
3114 [TEGRA_POWERGATE_3D1] = "td2",
3117 static const u8 tegra30_cpu_powergates[] = {
3118 TEGRA_POWERGATE_CPU,
3119 TEGRA_POWERGATE_CPU1,
3120 TEGRA_POWERGATE_CPU2,
3121 TEGRA_POWERGATE_CPU3,
3124 static const char * const tegra30_reset_sources[] = {
3132 static const struct tegra_pmc_soc tegra30_pmc_soc = {
3133 .supports_core_domain = true,
3134 .num_powergates = ARRAY_SIZE(tegra30_powergates),
3135 .powergates = tegra30_powergates,
3136 .num_cpu_powergates = ARRAY_SIZE(tegra30_cpu_powergates),
3137 .cpu_powergates = tegra30_cpu_powergates,
3138 .has_tsense_reset = true,
3139 .has_gpu_clamps = false,
3140 .needs_mbist_war = false,
3141 .has_impl_33v_pwr = false,
3142 .maybe_tz_only = false,
3147 .regs = &tegra20_pmc_regs,
3148 .init = tegra20_pmc_init,
3149 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3150 .powergate_set = tegra20_powergate_set,
3151 .reset_sources = tegra30_reset_sources,
3152 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3153 .reset_levels = NULL,
3154 .num_reset_levels = 0,
3155 .pmc_clks_data = tegra_pmc_clks_data,
3156 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3157 .has_blink_output = true,
3158 .has_usb_sleepwalk = true,
3161 static const char * const tegra114_powergates[] = {
3162 [TEGRA_POWERGATE_CPU] = "crail",
3163 [TEGRA_POWERGATE_3D] = "td",
3164 [TEGRA_POWERGATE_VENC] = "venc",
3165 [TEGRA_POWERGATE_VDEC] = "vdec",
3166 [TEGRA_POWERGATE_MPE] = "mpe",
3167 [TEGRA_POWERGATE_HEG] = "heg",
3168 [TEGRA_POWERGATE_CPU1] = "cpu1",
3169 [TEGRA_POWERGATE_CPU2] = "cpu2",
3170 [TEGRA_POWERGATE_CPU3] = "cpu3",
3171 [TEGRA_POWERGATE_CELP] = "celp",
3172 [TEGRA_POWERGATE_CPU0] = "cpu0",
3173 [TEGRA_POWERGATE_C0NC] = "c0nc",
3174 [TEGRA_POWERGATE_C1NC] = "c1nc",
3175 [TEGRA_POWERGATE_DIS] = "dis",
3176 [TEGRA_POWERGATE_DISB] = "disb",
3177 [TEGRA_POWERGATE_XUSBA] = "xusba",
3178 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3179 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3182 static const u8 tegra114_cpu_powergates[] = {
3183 TEGRA_POWERGATE_CPU0,
3184 TEGRA_POWERGATE_CPU1,
3185 TEGRA_POWERGATE_CPU2,
3186 TEGRA_POWERGATE_CPU3,
3189 static const struct tegra_pmc_soc tegra114_pmc_soc = {
3190 .supports_core_domain = false,
3191 .num_powergates = ARRAY_SIZE(tegra114_powergates),
3192 .powergates = tegra114_powergates,
3193 .num_cpu_powergates = ARRAY_SIZE(tegra114_cpu_powergates),
3194 .cpu_powergates = tegra114_cpu_powergates,
3195 .has_tsense_reset = true,
3196 .has_gpu_clamps = false,
3197 .needs_mbist_war = false,
3198 .has_impl_33v_pwr = false,
3199 .maybe_tz_only = false,
3204 .regs = &tegra20_pmc_regs,
3205 .init = tegra20_pmc_init,
3206 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3207 .powergate_set = tegra114_powergate_set,
3208 .reset_sources = tegra30_reset_sources,
3209 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3210 .reset_levels = NULL,
3211 .num_reset_levels = 0,
3212 .pmc_clks_data = tegra_pmc_clks_data,
3213 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3214 .has_blink_output = true,
3215 .has_usb_sleepwalk = true,
3218 static const char * const tegra124_powergates[] = {
3219 [TEGRA_POWERGATE_CPU] = "crail",
3220 [TEGRA_POWERGATE_3D] = "3d",
3221 [TEGRA_POWERGATE_VENC] = "venc",
3222 [TEGRA_POWERGATE_PCIE] = "pcie",
3223 [TEGRA_POWERGATE_VDEC] = "vdec",
3224 [TEGRA_POWERGATE_MPE] = "mpe",
3225 [TEGRA_POWERGATE_HEG] = "heg",
3226 [TEGRA_POWERGATE_SATA] = "sata",
3227 [TEGRA_POWERGATE_CPU1] = "cpu1",
3228 [TEGRA_POWERGATE_CPU2] = "cpu2",
3229 [TEGRA_POWERGATE_CPU3] = "cpu3",
3230 [TEGRA_POWERGATE_CELP] = "celp",
3231 [TEGRA_POWERGATE_CPU0] = "cpu0",
3232 [TEGRA_POWERGATE_C0NC] = "c0nc",
3233 [TEGRA_POWERGATE_C1NC] = "c1nc",
3234 [TEGRA_POWERGATE_SOR] = "sor",
3235 [TEGRA_POWERGATE_DIS] = "dis",
3236 [TEGRA_POWERGATE_DISB] = "disb",
3237 [TEGRA_POWERGATE_XUSBA] = "xusba",
3238 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3239 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3240 [TEGRA_POWERGATE_VIC] = "vic",
3241 [TEGRA_POWERGATE_IRAM] = "iram",
3244 static const u8 tegra124_cpu_powergates[] = {
3245 TEGRA_POWERGATE_CPU0,
3246 TEGRA_POWERGATE_CPU1,
3247 TEGRA_POWERGATE_CPU2,
3248 TEGRA_POWERGATE_CPU3,
3251 #define TEGRA_IO_PAD(_id, _dpd, _voltage, _name) \
3252 ((struct tegra_io_pad_soc) { \
3255 .voltage = (_voltage), \
3259 #define TEGRA_IO_PIN_DESC(_id, _dpd, _voltage, _name) \
3260 ((struct pinctrl_pin_desc) { \
3265 #define TEGRA124_IO_PAD_TABLE(_pad) \
3266 /* .id .dpd .voltage .name */ \
3267 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3268 _pad(TEGRA_IO_PAD_BB, 15, UINT_MAX, "bb"), \
3269 _pad(TEGRA_IO_PAD_CAM, 36, UINT_MAX, "cam"), \
3270 _pad(TEGRA_IO_PAD_COMP, 22, UINT_MAX, "comp"), \
3271 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3272 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csb"), \
3273 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "cse"), \
3274 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3275 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
3276 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
3277 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
3278 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
3279 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3280 _pad(TEGRA_IO_PAD_HV, 38, UINT_MAX, "hv"), \
3281 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
3282 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3283 _pad(TEGRA_IO_PAD_NAND, 13, UINT_MAX, "nand"), \
3284 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
3285 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
3286 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3287 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3288 _pad(TEGRA_IO_PAD_SDMMC1, 33, UINT_MAX, "sdmmc1"), \
3289 _pad(TEGRA_IO_PAD_SDMMC3, 34, UINT_MAX, "sdmmc3"), \
3290 _pad(TEGRA_IO_PAD_SDMMC4, 35, UINT_MAX, "sdmmc4"), \
3291 _pad(TEGRA_IO_PAD_SYS_DDC, 58, UINT_MAX, "sys_ddc"), \
3292 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3293 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3294 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3295 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3296 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb_bias")
3298 static const struct tegra_io_pad_soc tegra124_io_pads[] = {
3299 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PAD)
3302 static const struct pinctrl_pin_desc tegra124_pin_descs[] = {
3303 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3306 static const struct tegra_pmc_soc tegra124_pmc_soc = {
3307 .supports_core_domain = false,
3308 .num_powergates = ARRAY_SIZE(tegra124_powergates),
3309 .powergates = tegra124_powergates,
3310 .num_cpu_powergates = ARRAY_SIZE(tegra124_cpu_powergates),
3311 .cpu_powergates = tegra124_cpu_powergates,
3312 .has_tsense_reset = true,
3313 .has_gpu_clamps = true,
3314 .needs_mbist_war = false,
3315 .has_impl_33v_pwr = false,
3316 .maybe_tz_only = false,
3317 .num_io_pads = ARRAY_SIZE(tegra124_io_pads),
3318 .io_pads = tegra124_io_pads,
3319 .num_pin_descs = ARRAY_SIZE(tegra124_pin_descs),
3320 .pin_descs = tegra124_pin_descs,
3321 .regs = &tegra20_pmc_regs,
3322 .init = tegra20_pmc_init,
3323 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3324 .powergate_set = tegra114_powergate_set,
3325 .reset_sources = tegra30_reset_sources,
3326 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3327 .reset_levels = NULL,
3328 .num_reset_levels = 0,
3329 .pmc_clks_data = tegra_pmc_clks_data,
3330 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3331 .has_blink_output = true,
3332 .has_usb_sleepwalk = true,
3335 static const char * const tegra210_powergates[] = {
3336 [TEGRA_POWERGATE_CPU] = "crail",
3337 [TEGRA_POWERGATE_3D] = "3d",
3338 [TEGRA_POWERGATE_VENC] = "venc",
3339 [TEGRA_POWERGATE_PCIE] = "pcie",
3340 [TEGRA_POWERGATE_MPE] = "mpe",
3341 [TEGRA_POWERGATE_SATA] = "sata",
3342 [TEGRA_POWERGATE_CPU1] = "cpu1",
3343 [TEGRA_POWERGATE_CPU2] = "cpu2",
3344 [TEGRA_POWERGATE_CPU3] = "cpu3",
3345 [TEGRA_POWERGATE_CPU0] = "cpu0",
3346 [TEGRA_POWERGATE_C0NC] = "c0nc",
3347 [TEGRA_POWERGATE_SOR] = "sor",
3348 [TEGRA_POWERGATE_DIS] = "dis",
3349 [TEGRA_POWERGATE_DISB] = "disb",
3350 [TEGRA_POWERGATE_XUSBA] = "xusba",
3351 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3352 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3353 [TEGRA_POWERGATE_VIC] = "vic",
3354 [TEGRA_POWERGATE_IRAM] = "iram",
3355 [TEGRA_POWERGATE_NVDEC] = "nvdec",
3356 [TEGRA_POWERGATE_NVJPG] = "nvjpg",
3357 [TEGRA_POWERGATE_AUD] = "aud",
3358 [TEGRA_POWERGATE_DFD] = "dfd",
3359 [TEGRA_POWERGATE_VE2] = "ve2",
3362 static const u8 tegra210_cpu_powergates[] = {
3363 TEGRA_POWERGATE_CPU0,
3364 TEGRA_POWERGATE_CPU1,
3365 TEGRA_POWERGATE_CPU2,
3366 TEGRA_POWERGATE_CPU3,
3369 #define TEGRA210_IO_PAD_TABLE(_pad) \
3370 /* .id .dpd .voltage .name */ \
3371 _pad(TEGRA_IO_PAD_AUDIO, 17, 5, "audio"), \
3372 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 18, "audio-hv"), \
3373 _pad(TEGRA_IO_PAD_CAM, 36, 10, "cam"), \
3374 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3375 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3376 _pad(TEGRA_IO_PAD_CSIC, 42, UINT_MAX, "csic"), \
3377 _pad(TEGRA_IO_PAD_CSID, 43, UINT_MAX, "csid"), \
3378 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "csie"), \
3379 _pad(TEGRA_IO_PAD_CSIF, 45, UINT_MAX, "csif"), \
3380 _pad(TEGRA_IO_PAD_DBG, 25, 19, "dbg"), \
3381 _pad(TEGRA_IO_PAD_DEBUG_NONAO, 26, UINT_MAX, "debug-nonao"), \
3382 _pad(TEGRA_IO_PAD_DMIC, 50, 20, "dmic"), \
3383 _pad(TEGRA_IO_PAD_DP, 51, UINT_MAX, "dp"), \
3384 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3385 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
3386 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
3387 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
3388 _pad(TEGRA_IO_PAD_EMMC, 35, UINT_MAX, "emmc"), \
3389 _pad(TEGRA_IO_PAD_EMMC2, 37, UINT_MAX, "emmc2"), \
3390 _pad(TEGRA_IO_PAD_GPIO, 27, 21, "gpio"), \
3391 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
3392 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3393 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
3394 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3395 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
3396 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
3397 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3398 _pad(TEGRA_IO_PAD_PEX_CNTRL, UINT_MAX, 11, "pex-cntrl"), \
3399 _pad(TEGRA_IO_PAD_SDMMC1, 33, 12, "sdmmc1"), \
3400 _pad(TEGRA_IO_PAD_SDMMC3, 34, 13, "sdmmc3"), \
3401 _pad(TEGRA_IO_PAD_SPI, 46, 22, "spi"), \
3402 _pad(TEGRA_IO_PAD_SPI_HV, 47, 23, "spi-hv"), \
3403 _pad(TEGRA_IO_PAD_UART, 14, 2, "uart"), \
3404 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3405 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3406 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3407 _pad(TEGRA_IO_PAD_USB3, 18, UINT_MAX, "usb3"), \
3408 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias")
3410 static const struct tegra_io_pad_soc tegra210_io_pads[] = {
3411 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PAD)
3414 static const struct pinctrl_pin_desc tegra210_pin_descs[] = {
3415 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3418 static const char * const tegra210_reset_sources[] = {
3427 static const struct tegra_wake_event tegra210_wake_events[] = {
3428 TEGRA_WAKE_IRQ("rtc", 16, 2),
3429 TEGRA_WAKE_IRQ("pmu", 51, 86),
3432 static const struct tegra_pmc_soc tegra210_pmc_soc = {
3433 .supports_core_domain = false,
3434 .num_powergates = ARRAY_SIZE(tegra210_powergates),
3435 .powergates = tegra210_powergates,
3436 .num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates),
3437 .cpu_powergates = tegra210_cpu_powergates,
3438 .has_tsense_reset = true,
3439 .has_gpu_clamps = true,
3440 .needs_mbist_war = true,
3441 .has_impl_33v_pwr = false,
3442 .maybe_tz_only = true,
3443 .num_io_pads = ARRAY_SIZE(tegra210_io_pads),
3444 .io_pads = tegra210_io_pads,
3445 .num_pin_descs = ARRAY_SIZE(tegra210_pin_descs),
3446 .pin_descs = tegra210_pin_descs,
3447 .regs = &tegra20_pmc_regs,
3448 .init = tegra20_pmc_init,
3449 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3450 .powergate_set = tegra114_powergate_set,
3451 .irq_set_wake = tegra210_pmc_irq_set_wake,
3452 .irq_set_type = tegra210_pmc_irq_set_type,
3453 .reset_sources = tegra210_reset_sources,
3454 .num_reset_sources = ARRAY_SIZE(tegra210_reset_sources),
3455 .reset_levels = NULL,
3456 .num_reset_levels = 0,
3457 .num_wake_events = ARRAY_SIZE(tegra210_wake_events),
3458 .wake_events = tegra210_wake_events,
3459 .pmc_clks_data = tegra_pmc_clks_data,
3460 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3461 .has_blink_output = true,
3462 .has_usb_sleepwalk = true,
3465 #define TEGRA186_IO_PAD_TABLE(_pad) \
3466 /* .id .dpd .voltage .name */ \
3467 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3468 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3469 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3470 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3471 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
3472 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
3473 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3474 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
3475 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3476 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3477 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3478 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias"), \
3479 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3480 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3481 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3482 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
3483 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
3484 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
3485 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3486 _pad(TEGRA_IO_PAD_SDMMC2_HV, 34, 5, "sdmmc2-hv"), \
3487 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
3488 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
3489 _pad(TEGRA_IO_PAD_DSIB, 40, UINT_MAX, "dsib"), \
3490 _pad(TEGRA_IO_PAD_DSIC, 41, UINT_MAX, "dsic"), \
3491 _pad(TEGRA_IO_PAD_DSID, 42, UINT_MAX, "dsid"), \
3492 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
3493 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
3494 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
3495 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
3496 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
3497 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
3498 _pad(TEGRA_IO_PAD_DMIC_HV, 52, 2, "dmic-hv"), \
3499 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
3500 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
3501 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
3502 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
3503 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
3504 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
3506 static const struct tegra_io_pad_soc tegra186_io_pads[] = {
3507 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PAD)
3510 static const struct pinctrl_pin_desc tegra186_pin_descs[] = {
3511 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3514 static const struct tegra_pmc_regs tegra186_pmc_regs = {
3519 .dpd2_status = 0x80,
3521 .rst_source_shift = 0x2,
3522 .rst_source_mask = 0x3c,
3523 .rst_level_shift = 0x0,
3524 .rst_level_mask = 0x3,
3527 static void tegra186_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
3528 struct device_node *np,
3531 struct resource regs;
3536 index = of_property_match_string(np, "reg-names", "wake");
3538 dev_err(pmc->dev, "failed to find PMC wake registers\n");
3542 of_address_to_resource(np, index, ®s);
3544 wake = ioremap(regs.start, resource_size(®s));
3546 dev_err(pmc->dev, "failed to map PMC wake registers\n");
3550 value = readl(wake + WAKE_AOWAKE_CTRL);
3553 value |= WAKE_AOWAKE_CTRL_INTR_POLARITY;
3555 value &= ~WAKE_AOWAKE_CTRL_INTR_POLARITY;
3557 writel(value, wake + WAKE_AOWAKE_CTRL);
3562 static const char * const tegra186_reset_sources[] = {
3580 static const char * const tegra186_reset_levels[] = {
3581 "L0", "L1", "L2", "WARM"
3584 static const struct tegra_wake_event tegra186_wake_events[] = {
3585 TEGRA_WAKE_IRQ("pmu", 24, 209),
3586 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA186_AON_GPIO(FF, 0)),
3587 TEGRA_WAKE_IRQ("rtc", 73, 10),
3590 static const struct tegra_pmc_soc tegra186_pmc_soc = {
3591 .supports_core_domain = false,
3592 .num_powergates = 0,
3594 .num_cpu_powergates = 0,
3595 .cpu_powergates = NULL,
3596 .has_tsense_reset = false,
3597 .has_gpu_clamps = false,
3598 .needs_mbist_war = false,
3599 .has_impl_33v_pwr = true,
3600 .maybe_tz_only = false,
3601 .num_io_pads = ARRAY_SIZE(tegra186_io_pads),
3602 .io_pads = tegra186_io_pads,
3603 .num_pin_descs = ARRAY_SIZE(tegra186_pin_descs),
3604 .pin_descs = tegra186_pin_descs,
3605 .regs = &tegra186_pmc_regs,
3607 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3608 .irq_set_wake = tegra186_pmc_irq_set_wake,
3609 .irq_set_type = tegra186_pmc_irq_set_type,
3610 .reset_sources = tegra186_reset_sources,
3611 .num_reset_sources = ARRAY_SIZE(tegra186_reset_sources),
3612 .reset_levels = tegra186_reset_levels,
3613 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3614 .num_wake_events = ARRAY_SIZE(tegra186_wake_events),
3615 .wake_events = tegra186_wake_events,
3616 .pmc_clks_data = NULL,
3618 .has_blink_output = false,
3619 .has_usb_sleepwalk = false,
3622 #define TEGRA194_IO_PAD_TABLE(_pad) \
3623 /* .id .dpd .voltage .name */ \
3624 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3625 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3626 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3627 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
3628 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
3629 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3630 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
3631 _pad(TEGRA_IO_PAD_EQOS, 8, UINT_MAX, "eqos"), \
3632 _pad(TEGRA_IO_PAD_PEX_CLK_2_BIAS, 9, UINT_MAX, "pex-clk-2-bias"), \
3633 _pad(TEGRA_IO_PAD_PEX_CLK_2, 10, UINT_MAX, "pex-clk-2"), \
3634 _pad(TEGRA_IO_PAD_DAP3, 11, UINT_MAX, "dap3"), \
3635 _pad(TEGRA_IO_PAD_DAP5, 12, UINT_MAX, "dap5"), \
3636 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3637 _pad(TEGRA_IO_PAD_PWR_CTL, 15, UINT_MAX, "pwr-ctl"), \
3638 _pad(TEGRA_IO_PAD_SOC_GPIO53, 16, UINT_MAX, "soc-gpio53"), \
3639 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3640 _pad(TEGRA_IO_PAD_GP_PWM2, 18, UINT_MAX, "gp-pwm2"), \
3641 _pad(TEGRA_IO_PAD_GP_PWM3, 19, UINT_MAX, "gp-pwm3"), \
3642 _pad(TEGRA_IO_PAD_SOC_GPIO12, 20, UINT_MAX, "soc-gpio12"), \
3643 _pad(TEGRA_IO_PAD_SOC_GPIO13, 21, UINT_MAX, "soc-gpio13"), \
3644 _pad(TEGRA_IO_PAD_SOC_GPIO10, 22, UINT_MAX, "soc-gpio10"), \
3645 _pad(TEGRA_IO_PAD_UART4, 23, UINT_MAX, "uart4"), \
3646 _pad(TEGRA_IO_PAD_UART5, 24, UINT_MAX, "uart5"), \
3647 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
3648 _pad(TEGRA_IO_PAD_HDMI_DP3, 26, UINT_MAX, "hdmi-dp3"), \
3649 _pad(TEGRA_IO_PAD_HDMI_DP2, 27, UINT_MAX, "hdmi-dp2"), \
3650 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
3651 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
3652 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3653 _pad(TEGRA_IO_PAD_PEX_CTL2, 33, UINT_MAX, "pex-ctl2"), \
3654 _pad(TEGRA_IO_PAD_PEX_L0_RST_N, 34, UINT_MAX, "pex-l0-rst"), \
3655 _pad(TEGRA_IO_PAD_PEX_L1_RST_N, 35, UINT_MAX, "pex-l1-rst"), \
3656 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
3657 _pad(TEGRA_IO_PAD_PEX_L5_RST_N, 37, UINT_MAX, "pex-l5-rst"), \
3658 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
3659 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
3660 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
3661 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
3662 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
3663 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
3664 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
3665 _pad(TEGRA_IO_PAD_CSIG, 50, UINT_MAX, "csig"), \
3666 _pad(TEGRA_IO_PAD_CSIH, 51, UINT_MAX, "csih"), \
3667 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
3668 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
3669 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
3670 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
3671 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
3672 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
3674 static const struct tegra_io_pad_soc tegra194_io_pads[] = {
3675 TEGRA194_IO_PAD_TABLE(TEGRA_IO_PAD)
3678 static const struct pinctrl_pin_desc tegra194_pin_descs[] = {
3679 TEGRA194_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3682 static const struct tegra_pmc_regs tegra194_pmc_regs = {
3687 .dpd2_status = 0x80,
3689 .rst_source_shift = 0x2,
3690 .rst_source_mask = 0x7c,
3691 .rst_level_shift = 0x0,
3692 .rst_level_mask = 0x3,
3695 static const char * const tegra194_reset_sources[] = {
3719 static const struct tegra_wake_event tegra194_wake_events[] = {
3720 TEGRA_WAKE_IRQ("pmu", 24, 209),
3721 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA194_AON_GPIO(EE, 4)),
3722 TEGRA_WAKE_IRQ("rtc", 73, 10),
3725 static const struct tegra_pmc_soc tegra194_pmc_soc = {
3726 .supports_core_domain = false,
3727 .num_powergates = 0,
3729 .num_cpu_powergates = 0,
3730 .cpu_powergates = NULL,
3731 .has_tsense_reset = false,
3732 .has_gpu_clamps = false,
3733 .needs_mbist_war = false,
3734 .has_impl_33v_pwr = true,
3735 .maybe_tz_only = false,
3736 .num_io_pads = ARRAY_SIZE(tegra194_io_pads),
3737 .io_pads = tegra194_io_pads,
3738 .num_pin_descs = ARRAY_SIZE(tegra194_pin_descs),
3739 .pin_descs = tegra194_pin_descs,
3740 .regs = &tegra194_pmc_regs,
3742 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3743 .irq_set_wake = tegra186_pmc_irq_set_wake,
3744 .irq_set_type = tegra186_pmc_irq_set_type,
3745 .reset_sources = tegra194_reset_sources,
3746 .num_reset_sources = ARRAY_SIZE(tegra194_reset_sources),
3747 .reset_levels = tegra186_reset_levels,
3748 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3749 .num_wake_events = ARRAY_SIZE(tegra194_wake_events),
3750 .wake_events = tegra194_wake_events,
3751 .pmc_clks_data = NULL,
3753 .has_blink_output = false,
3754 .has_usb_sleepwalk = false,
3757 static const struct tegra_pmc_regs tegra234_pmc_regs = {
3764 .rst_source_shift = 0x2,
3765 .rst_source_mask = 0xfc,
3766 .rst_level_shift = 0x0,
3767 .rst_level_mask = 0x3,
3770 static const char * const tegra234_reset_sources[] = {
3771 "SYS_RESET_N", /* 0x0 */
3795 "CSITE_SW", /* 0x18 */
3803 "FSI_R52C0WDT", /* 0x20 */
3808 "FSI_VMON", /* 0x25 */
3811 static const struct tegra_wake_event tegra234_wake_events[] = {
3812 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA234_AON_GPIO(EE, 4)),
3813 TEGRA_WAKE_IRQ("rtc", 73, 10),
3816 static const struct tegra_pmc_soc tegra234_pmc_soc = {
3817 .supports_core_domain = false,
3818 .num_powergates = 0,
3820 .num_cpu_powergates = 0,
3821 .cpu_powergates = NULL,
3822 .has_tsense_reset = false,
3823 .has_gpu_clamps = false,
3824 .needs_mbist_war = false,
3825 .has_impl_33v_pwr = true,
3826 .maybe_tz_only = false,
3831 .regs = &tegra234_pmc_regs,
3833 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3834 .irq_set_wake = tegra186_pmc_irq_set_wake,
3835 .irq_set_type = tegra186_pmc_irq_set_type,
3836 .reset_sources = tegra234_reset_sources,
3837 .num_reset_sources = ARRAY_SIZE(tegra234_reset_sources),
3838 .reset_levels = tegra186_reset_levels,
3839 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3840 .num_wake_events = ARRAY_SIZE(tegra234_wake_events),
3841 .wake_events = tegra234_wake_events,
3842 .pmc_clks_data = NULL,
3844 .has_blink_output = false,
3847 static const struct of_device_id tegra_pmc_match[] = {
3848 { .compatible = "nvidia,tegra234-pmc", .data = &tegra234_pmc_soc },
3849 { .compatible = "nvidia,tegra194-pmc", .data = &tegra194_pmc_soc },
3850 { .compatible = "nvidia,tegra186-pmc", .data = &tegra186_pmc_soc },
3851 { .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc },
3852 { .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc },
3853 { .compatible = "nvidia,tegra124-pmc", .data = &tegra124_pmc_soc },
3854 { .compatible = "nvidia,tegra114-pmc", .data = &tegra114_pmc_soc },
3855 { .compatible = "nvidia,tegra30-pmc", .data = &tegra30_pmc_soc },
3856 { .compatible = "nvidia,tegra20-pmc", .data = &tegra20_pmc_soc },
3860 static void tegra_pmc_sync_state(struct device *dev)
3865 * Newer device-trees have power domains, but we need to prepare all
3866 * device drivers with runtime PM and OPP support first, otherwise
3867 * state syncing is unsafe.
3869 if (!pmc->soc->supports_core_domain)
3873 * Older device-trees don't have core PD, and thus, there are
3874 * no dependencies that will block the state syncing. We shouldn't
3875 * mark the domain as synced in this case.
3877 if (!pmc->core_domain_registered)
3880 pmc->core_domain_state_synced = true;
3882 /* this is a no-op if core regulator isn't used */
3883 mutex_lock(&pmc->powergates_lock);
3884 err = dev_pm_opp_sync_regulators(dev);
3885 mutex_unlock(&pmc->powergates_lock);
3888 dev_err(dev, "failed to sync regulators: %d\n", err);
3891 static struct platform_driver tegra_pmc_driver = {
3893 .name = "tegra-pmc",
3894 .suppress_bind_attrs = true,
3895 .of_match_table = tegra_pmc_match,
3896 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
3897 .pm = &tegra_pmc_pm_ops,
3899 .sync_state = tegra_pmc_sync_state,
3901 .probe = tegra_pmc_probe,
3903 builtin_platform_driver(tegra_pmc_driver);
3905 static bool __init tegra_pmc_detect_tz_only(struct tegra_pmc *pmc)
3909 saved = readl(pmc->base + pmc->soc->regs->scratch0);
3910 value = saved ^ 0xffffffff;
3912 if (value == 0xffffffff)
3915 /* write pattern and read it back */
3916 writel(value, pmc->base + pmc->soc->regs->scratch0);
3917 value = readl(pmc->base + pmc->soc->regs->scratch0);
3919 /* if we read all-zeroes, access is restricted to TZ only */
3921 pr_info("access to PMC is restricted to TZ\n");
3925 /* restore original value */
3926 writel(saved, pmc->base + pmc->soc->regs->scratch0);
3932 * Early initialization to allow access to registers in the very early boot
3935 static int __init tegra_pmc_early_init(void)
3937 const struct of_device_id *match;
3938 struct device_node *np;
3939 struct resource regs;
3943 mutex_init(&pmc->powergates_lock);
3945 np = of_find_matching_node_and_match(NULL, tegra_pmc_match, &match);
3948 * Fall back to legacy initialization for 32-bit ARM only. All
3949 * 64-bit ARM device tree files for Tegra are required to have
3952 * This is for backwards-compatibility with old device trees
3953 * that didn't contain a PMC node. Note that in this case the
3954 * SoC data can't be matched and therefore powergating is
3957 if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) {
3958 pr_warn("DT node not found, powergating disabled\n");
3960 regs.start = 0x7000e400;
3961 regs.end = 0x7000e7ff;
3962 regs.flags = IORESOURCE_MEM;
3964 pr_warn("Using memory region %pR\n", ®s);
3967 * At this point we're not running on Tegra, so play
3968 * nice with multi-platform kernels.
3974 * Extract information from the device tree if we've found a
3977 if (of_address_to_resource(np, 0, ®s) < 0) {
3978 pr_err("failed to get PMC registers\n");
3984 pmc->base = ioremap(regs.start, resource_size(®s));
3986 pr_err("failed to map PMC registers\n");
3992 pmc->soc = match->data;
3994 if (pmc->soc->maybe_tz_only)
3995 pmc->tz_only = tegra_pmc_detect_tz_only(pmc);
3997 /* Create a bitmap of the available and valid partitions */
3998 for (i = 0; i < pmc->soc->num_powergates; i++)
3999 if (pmc->soc->powergates[i])
4000 set_bit(i, pmc->powergates_available);
4003 * Invert the interrupt polarity if a PMC device tree node
4004 * exists and contains the nvidia,invert-interrupt property.
4006 invert = of_property_read_bool(np, "nvidia,invert-interrupt");
4008 pmc->soc->setup_irq_polarity(pmc, np, invert);
4015 early_initcall(tegra_pmc_early_init);