1 // SPDX-License-Identifier: GPL-2.0-only
3 * drivers/soc/tegra/pmc.c
5 * Copyright (c) 2010 Google, Inc
6 * Copyright (c) 2018-2020, 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/soc/tegra-pmc.h>
60 #define PMC_CNTRL_INTR_POLARITY BIT(17) /* inverts INTR polarity */
61 #define PMC_CNTRL_CPU_PWRREQ_OE BIT(16) /* CPU pwr req enable */
62 #define PMC_CNTRL_CPU_PWRREQ_POLARITY BIT(15) /* CPU pwr req polarity */
63 #define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */
64 #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */
65 #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */
66 #define PMC_CNTRL_PWRREQ_POLARITY BIT(8)
67 #define PMC_CNTRL_BLINK_EN 7
68 #define PMC_CNTRL_MAIN_RST BIT(4)
70 #define PMC_WAKE_MASK 0x0c
71 #define PMC_WAKE_LEVEL 0x10
72 #define PMC_WAKE_STATUS 0x14
73 #define PMC_SW_WAKE_STATUS 0x18
74 #define PMC_DPD_PADS_ORIDE 0x1c
75 #define PMC_DPD_PADS_ORIDE_BLINK 20
77 #define DPD_SAMPLE 0x020
78 #define DPD_SAMPLE_ENABLE BIT(0)
79 #define DPD_SAMPLE_DISABLE (0 << 0)
81 #define PWRGATE_TOGGLE 0x30
82 #define PWRGATE_TOGGLE_START BIT(8)
84 #define REMOVE_CLAMPING 0x34
86 #define PWRGATE_STATUS 0x38
88 #define PMC_BLINK_TIMER 0x40
89 #define PMC_IMPL_E_33V_PWR 0x40
91 #define PMC_PWR_DET 0x48
93 #define PMC_SCRATCH0_MODE_RECOVERY BIT(31)
94 #define PMC_SCRATCH0_MODE_BOOTLOADER BIT(30)
95 #define PMC_SCRATCH0_MODE_RCM BIT(1)
96 #define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
97 PMC_SCRATCH0_MODE_BOOTLOADER | \
98 PMC_SCRATCH0_MODE_RCM)
100 #define PMC_CPUPWRGOOD_TIMER 0xc8
101 #define PMC_CPUPWROFF_TIMER 0xcc
102 #define PMC_COREPWRGOOD_TIMER 0x3c
103 #define PMC_COREPWROFF_TIMER 0xe0
105 #define PMC_PWR_DET_VALUE 0xe4
107 #define PMC_USB_DEBOUNCE_DEL 0xec
108 #define PMC_USB_AO 0xf0
110 #define PMC_SCRATCH41 0x140
112 #define PMC_WAKE2_MASK 0x160
113 #define PMC_WAKE2_LEVEL 0x164
114 #define PMC_WAKE2_STATUS 0x168
115 #define PMC_SW_WAKE2_STATUS 0x16c
117 #define PMC_CLK_OUT_CNTRL 0x1a8
118 #define PMC_CLK_OUT_MUX_MASK GENMASK(1, 0)
119 #define PMC_SENSOR_CTRL 0x1b0
120 #define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2)
121 #define PMC_SENSOR_CTRL_ENABLE_RST BIT(1)
123 #define PMC_RST_STATUS_POR 0
124 #define PMC_RST_STATUS_WATCHDOG 1
125 #define PMC_RST_STATUS_SENSOR 2
126 #define PMC_RST_STATUS_SW_MAIN 3
127 #define PMC_RST_STATUS_LP0 4
128 #define PMC_RST_STATUS_AOTAG 5
130 #define IO_DPD_REQ 0x1b8
131 #define IO_DPD_REQ_CODE_IDLE (0U << 30)
132 #define IO_DPD_REQ_CODE_OFF (1U << 30)
133 #define IO_DPD_REQ_CODE_ON (2U << 30)
134 #define IO_DPD_REQ_CODE_MASK (3U << 30)
136 #define IO_DPD_STATUS 0x1bc
137 #define IO_DPD2_REQ 0x1c0
138 #define IO_DPD2_STATUS 0x1c4
139 #define SEL_DPD_TIM 0x1c8
141 #define PMC_UTMIP_UHSIC_TRIGGERS 0x1ec
142 #define PMC_UTMIP_UHSIC_SAVED_STATE 0x1f0
144 #define PMC_UTMIP_TERM_PAD_CFG 0x1f8
145 #define PMC_UTMIP_UHSIC_SLEEP_CFG 0x1fc
146 #define PMC_UTMIP_UHSIC_FAKE 0x218
148 #define PMC_SCRATCH54 0x258
149 #define PMC_SCRATCH54_DATA_SHIFT 8
150 #define PMC_SCRATCH54_ADDR_SHIFT 0
152 #define PMC_SCRATCH55 0x25c
153 #define PMC_SCRATCH55_RESET_TEGRA BIT(31)
154 #define PMC_SCRATCH55_CNTRL_ID_SHIFT 27
155 #define PMC_SCRATCH55_PINMUX_SHIFT 24
156 #define PMC_SCRATCH55_16BITOP BIT(15)
157 #define PMC_SCRATCH55_CHECKSUM_SHIFT 16
158 #define PMC_SCRATCH55_I2CSLV1_SHIFT 0
160 #define PMC_UTMIP_UHSIC_LINE_WAKEUP 0x26c
162 #define PMC_UTMIP_BIAS_MASTER_CNTRL 0x270
163 #define PMC_UTMIP_MASTER_CONFIG 0x274
164 #define PMC_UTMIP_UHSIC2_TRIGGERS 0x27c
165 #define PMC_UTMIP_MASTER2_CONFIG 0x29c
167 #define GPU_RG_CNTRL 0x2d4
169 #define PMC_UTMIP_PAD_CFG0 0x4c0
170 #define PMC_UTMIP_UHSIC_SLEEP_CFG1 0x4d0
171 #define PMC_UTMIP_SLEEPWALK_P3 0x4e0
172 /* Tegra186 and later */
173 #define WAKE_AOWAKE_CNTRL(x) (0x000 + ((x) << 2))
174 #define WAKE_AOWAKE_CNTRL_LEVEL (1 << 3)
175 #define WAKE_AOWAKE_MASK_W(x) (0x180 + ((x) << 2))
176 #define WAKE_AOWAKE_MASK_R(x) (0x300 + ((x) << 2))
177 #define WAKE_AOWAKE_STATUS_W(x) (0x30c + ((x) << 2))
178 #define WAKE_AOWAKE_STATUS_R(x) (0x48c + ((x) << 2))
179 #define WAKE_AOWAKE_TIER0_ROUTING(x) (0x4b4 + ((x) << 2))
180 #define WAKE_AOWAKE_TIER1_ROUTING(x) (0x4c0 + ((x) << 2))
181 #define WAKE_AOWAKE_TIER2_ROUTING(x) (0x4cc + ((x) << 2))
183 #define WAKE_AOWAKE_CTRL 0x4f4
184 #define WAKE_AOWAKE_CTRL_INTR_POLARITY BIT(0)
187 #define TEGRA_SMC_PMC 0xc2fffe00
188 #define TEGRA_SMC_PMC_READ 0xaa
189 #define TEGRA_SMC_PMC_WRITE 0xbb
198 #define to_pmc_clk(_hw) container_of(_hw, struct pmc_clk, hw)
200 struct pmc_clk_gate {
206 #define to_pmc_clk_gate(_hw) container_of(_hw, struct pmc_clk_gate, hw)
208 struct pmc_clk_init_data {
210 const char *const *parents;
217 static const char * const clk_out1_parents[] = { "osc", "osc_div2",
218 "osc_div4", "extern1",
221 static const char * const clk_out2_parents[] = { "osc", "osc_div2",
222 "osc_div4", "extern2",
225 static const char * const clk_out3_parents[] = { "osc", "osc_div2",
226 "osc_div4", "extern3",
229 static const struct pmc_clk_init_data tegra_pmc_clks_data[] = {
231 .name = "pmc_clk_out_1",
232 .parents = clk_out1_parents,
233 .num_parents = ARRAY_SIZE(clk_out1_parents),
234 .clk_id = TEGRA_PMC_CLK_OUT_1,
239 .name = "pmc_clk_out_2",
240 .parents = clk_out2_parents,
241 .num_parents = ARRAY_SIZE(clk_out2_parents),
242 .clk_id = TEGRA_PMC_CLK_OUT_2,
244 .force_en_shift = 10,
247 .name = "pmc_clk_out_3",
248 .parents = clk_out3_parents,
249 .num_parents = ARRAY_SIZE(clk_out3_parents),
250 .clk_id = TEGRA_PMC_CLK_OUT_3,
252 .force_en_shift = 18,
256 struct tegra_powergate {
257 struct generic_pm_domain genpd;
258 struct tegra_pmc *pmc;
261 unsigned int num_clks;
262 unsigned long *clk_rates;
263 struct reset_control *reset;
266 struct tegra_io_pad_soc {
267 enum tegra_io_pad id;
269 unsigned int voltage;
273 struct tegra_pmc_regs {
274 unsigned int scratch0;
275 unsigned int dpd_req;
276 unsigned int dpd_status;
277 unsigned int dpd2_req;
278 unsigned int dpd2_status;
279 unsigned int rst_status;
280 unsigned int rst_source_shift;
281 unsigned int rst_source_mask;
282 unsigned int rst_level_shift;
283 unsigned int rst_level_mask;
286 struct tegra_wake_event {
291 unsigned int instance;
296 #define TEGRA_WAKE_IRQ(_name, _id, _irq) \
302 .instance = UINT_MAX, \
307 #define TEGRA_WAKE_GPIO(_name, _id, _instance, _pin) \
313 .instance = _instance, \
318 struct tegra_pmc_soc {
319 unsigned int num_powergates;
320 const char *const *powergates;
321 unsigned int num_cpu_powergates;
322 const u8 *cpu_powergates;
324 bool has_tsense_reset;
326 bool needs_mbist_war;
327 bool has_impl_33v_pwr;
330 const struct tegra_io_pad_soc *io_pads;
331 unsigned int num_io_pads;
333 const struct pinctrl_pin_desc *pin_descs;
334 unsigned int num_pin_descs;
336 const struct tegra_pmc_regs *regs;
337 void (*init)(struct tegra_pmc *pmc);
338 void (*setup_irq_polarity)(struct tegra_pmc *pmc,
339 struct device_node *np,
341 int (*irq_set_wake)(struct irq_data *data, unsigned int on);
342 int (*irq_set_type)(struct irq_data *data, unsigned int type);
343 int (*powergate_set)(struct tegra_pmc *pmc, unsigned int id,
346 const char * const *reset_sources;
347 unsigned int num_reset_sources;
348 const char * const *reset_levels;
349 unsigned int num_reset_levels;
352 * These describe events that can wake the system from sleep (i.e.
353 * LP0 or SC7). Wakeup from other sleep states (such as LP1 or LP2)
354 * are dealt with in the LIC.
356 const struct tegra_wake_event *wake_events;
357 unsigned int num_wake_events;
359 const struct pmc_clk_init_data *pmc_clks_data;
360 unsigned int num_pmc_clks;
361 bool has_blink_output;
362 bool has_usb_sleepwalk;
366 * struct tegra_pmc - NVIDIA Tegra PMC
367 * @dev: pointer to PMC device structure
368 * @base: pointer to I/O remapped register region
369 * @wake: pointer to I/O remapped region for WAKE registers
370 * @aotag: pointer to I/O remapped region for AOTAG registers
371 * @scratch: pointer to I/O remapped region for scratch registers
372 * @clk: pointer to pclk clock
373 * @soc: pointer to SoC data structure
374 * @tz_only: flag specifying if the PMC can only be accessed via TrustZone
375 * @debugfs: pointer to debugfs entry
376 * @rate: currently configured rate of pclk
377 * @suspend_mode: lowest suspend mode available
378 * @cpu_good_time: CPU power good time (in microseconds)
379 * @cpu_off_time: CPU power off time (in microsecends)
380 * @core_osc_time: core power good OSC time (in microseconds)
381 * @core_pmu_time: core power good PMU time (in microseconds)
382 * @core_off_time: core power off time (in microseconds)
383 * @corereq_high: core power request is active-high
384 * @sysclkreq_high: system clock request is active-high
385 * @combined_req: combined power request for CPU & core
386 * @cpu_pwr_good_en: CPU power good signal is enabled
387 * @lp0_vec_phys: physical base address of the LP0 warm boot code
388 * @lp0_vec_size: size of the LP0 warm boot code
389 * @powergates_available: Bitmap of available power gates
390 * @powergates_lock: mutex for power gate register access
391 * @pctl_dev: pin controller exposed by the PMC
392 * @domain: IRQ domain provided by the PMC
393 * @irq: chip implementation for the IRQ domain
394 * @clk_nb: pclk clock changes handler
401 void __iomem *scratch;
403 struct dentry *debugfs;
405 const struct tegra_pmc_soc *soc;
410 enum tegra_suspend_mode suspend_mode;
419 bool cpu_pwr_good_en;
422 DECLARE_BITMAP(powergates_available, TEGRA_POWERGATE_MAX);
424 struct mutex powergates_lock;
426 struct pinctrl_dev *pctl_dev;
428 struct irq_domain *domain;
431 struct notifier_block clk_nb;
433 bool core_domain_state_synced;
434 bool core_domain_registered;
437 static struct tegra_pmc *pmc = &(struct tegra_pmc) {
439 .suspend_mode = TEGRA_SUSPEND_NONE,
442 static inline struct tegra_powergate *
443 to_powergate(struct generic_pm_domain *domain)
445 return container_of(domain, struct tegra_powergate, genpd);
448 static u32 tegra_pmc_readl(struct tegra_pmc *pmc, unsigned long offset)
450 struct arm_smccc_res res;
453 arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_READ, offset, 0, 0,
457 dev_warn(pmc->dev, "%s(): SMC failed: %lu\n",
460 pr_warn("%s(): SMC failed: %lu\n", __func__,
467 return readl(pmc->base + offset);
470 static void tegra_pmc_writel(struct tegra_pmc *pmc, u32 value,
471 unsigned long offset)
473 struct arm_smccc_res res;
476 arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_WRITE, offset,
477 value, 0, 0, 0, 0, &res);
480 dev_warn(pmc->dev, "%s(): SMC failed: %lu\n",
483 pr_warn("%s(): SMC failed: %lu\n", __func__,
487 writel(value, pmc->base + offset);
491 static u32 tegra_pmc_scratch_readl(struct tegra_pmc *pmc, unsigned long offset)
494 return tegra_pmc_readl(pmc, offset);
496 return readl(pmc->scratch + offset);
499 static void tegra_pmc_scratch_writel(struct tegra_pmc *pmc, u32 value,
500 unsigned long offset)
503 tegra_pmc_writel(pmc, value, offset);
505 writel(value, pmc->scratch + offset);
509 * TODO Figure out a way to call this with the struct tegra_pmc * passed in.
510 * This currently doesn't work because readx_poll_timeout() can only operate
511 * on functions that take a single argument.
513 static inline bool tegra_powergate_state(int id)
515 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
516 return (tegra_pmc_readl(pmc, GPU_RG_CNTRL) & 0x1) == 0;
518 return (tegra_pmc_readl(pmc, PWRGATE_STATUS) & BIT(id)) != 0;
521 static inline bool tegra_powergate_is_valid(struct tegra_pmc *pmc, int id)
523 return (pmc->soc && pmc->soc->powergates[id]);
526 static inline bool tegra_powergate_is_available(struct tegra_pmc *pmc, int id)
528 return test_bit(id, pmc->powergates_available);
531 static int tegra_powergate_lookup(struct tegra_pmc *pmc, const char *name)
535 if (!pmc || !pmc->soc || !name)
538 for (i = 0; i < pmc->soc->num_powergates; i++) {
539 if (!tegra_powergate_is_valid(pmc, i))
542 if (!strcmp(name, pmc->soc->powergates[i]))
549 static int tegra20_powergate_set(struct tegra_pmc *pmc, unsigned int id,
552 unsigned int retries = 100;
557 * As per TRM documentation, the toggle command will be dropped by PMC
558 * if there is contention with a HW-initiated toggling (i.e. CPU core
559 * power-gated), the command should be retried in that case.
562 tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
564 /* wait for PMC to execute the command */
565 ret = readx_poll_timeout(tegra_powergate_state, id, status,
566 status == new_state, 1, 10);
567 } while (ret == -ETIMEDOUT && retries--);
572 static inline bool tegra_powergate_toggle_ready(struct tegra_pmc *pmc)
574 return !(tegra_pmc_readl(pmc, PWRGATE_TOGGLE) & PWRGATE_TOGGLE_START);
577 static int tegra114_powergate_set(struct tegra_pmc *pmc, unsigned int id,
583 /* wait while PMC power gating is contended */
584 err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status,
585 status == true, 1, 100);
589 tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
591 /* wait for PMC to accept the command */
592 err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status,
593 status == true, 1, 100);
597 /* wait for PMC to execute the command */
598 err = readx_poll_timeout(tegra_powergate_state, id, status,
599 status == new_state, 10, 100000);
607 * tegra_powergate_set() - set the state of a partition
608 * @pmc: power management controller
610 * @new_state: new state of the partition
612 static int tegra_powergate_set(struct tegra_pmc *pmc, unsigned int id,
617 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
620 mutex_lock(&pmc->powergates_lock);
622 if (tegra_powergate_state(id) == new_state) {
623 mutex_unlock(&pmc->powergates_lock);
627 err = pmc->soc->powergate_set(pmc, id, new_state);
629 mutex_unlock(&pmc->powergates_lock);
634 static int __tegra_powergate_remove_clamping(struct tegra_pmc *pmc,
639 mutex_lock(&pmc->powergates_lock);
642 * On Tegra124 and later, the clamps for the GPU are controlled by a
643 * separate register (with different semantics).
645 if (id == TEGRA_POWERGATE_3D) {
646 if (pmc->soc->has_gpu_clamps) {
647 tegra_pmc_writel(pmc, 0, GPU_RG_CNTRL);
653 * Tegra 2 has a bug where PCIE and VDE clamping masks are
654 * swapped relatively to the partition ids
656 if (id == TEGRA_POWERGATE_VDEC)
657 mask = (1 << TEGRA_POWERGATE_PCIE);
658 else if (id == TEGRA_POWERGATE_PCIE)
659 mask = (1 << TEGRA_POWERGATE_VDEC);
663 tegra_pmc_writel(pmc, mask, REMOVE_CLAMPING);
666 mutex_unlock(&pmc->powergates_lock);
671 static int tegra_powergate_prepare_clocks(struct tegra_powergate *pg)
673 unsigned long safe_rate = 100 * 1000 * 1000;
677 for (i = 0; i < pg->num_clks; i++) {
678 pg->clk_rates[i] = clk_get_rate(pg->clks[i]);
680 if (!pg->clk_rates[i]) {
685 if (pg->clk_rates[i] <= safe_rate)
689 * We don't know whether voltage state is okay for the
690 * current clock rate, hence it's better to temporally
691 * switch clock to a safe rate which is suitable for
692 * all voltages, before enabling the clock.
694 err = clk_set_rate(pg->clks[i], safe_rate);
703 clk_set_rate(pg->clks[i], pg->clk_rates[i]);
708 static int tegra_powergate_unprepare_clocks(struct tegra_powergate *pg)
713 for (i = 0; i < pg->num_clks; i++) {
714 err = clk_set_rate(pg->clks[i], pg->clk_rates[i]);
722 static void tegra_powergate_disable_clocks(struct tegra_powergate *pg)
726 for (i = 0; i < pg->num_clks; i++)
727 clk_disable_unprepare(pg->clks[i]);
730 static int tegra_powergate_enable_clocks(struct tegra_powergate *pg)
735 for (i = 0; i < pg->num_clks; i++) {
736 err = clk_prepare_enable(pg->clks[i]);
745 clk_disable_unprepare(pg->clks[i]);
750 int __weak tegra210_clk_handle_mbist_war(unsigned int id)
755 static int tegra_powergate_power_up(struct tegra_powergate *pg,
760 err = reset_control_assert(pg->reset);
764 usleep_range(10, 20);
766 err = tegra_powergate_set(pg->pmc, pg->id, true);
770 usleep_range(10, 20);
772 err = tegra_powergate_prepare_clocks(pg);
776 err = tegra_powergate_enable_clocks(pg);
780 usleep_range(10, 20);
782 err = __tegra_powergate_remove_clamping(pg->pmc, pg->id);
786 usleep_range(10, 20);
788 err = reset_control_deassert(pg->reset);
792 usleep_range(10, 20);
794 if (pg->pmc->soc->needs_mbist_war)
795 err = tegra210_clk_handle_mbist_war(pg->id);
800 tegra_powergate_disable_clocks(pg);
802 err = tegra_powergate_unprepare_clocks(pg);
809 tegra_powergate_disable_clocks(pg);
810 usleep_range(10, 20);
813 tegra_powergate_unprepare_clocks(pg);
816 tegra_powergate_set(pg->pmc, pg->id, false);
821 static int tegra_powergate_power_down(struct tegra_powergate *pg)
825 err = tegra_powergate_prepare_clocks(pg);
829 err = tegra_powergate_enable_clocks(pg);
833 usleep_range(10, 20);
835 err = reset_control_assert(pg->reset);
839 usleep_range(10, 20);
841 tegra_powergate_disable_clocks(pg);
843 usleep_range(10, 20);
845 err = tegra_powergate_set(pg->pmc, pg->id, false);
849 err = tegra_powergate_unprepare_clocks(pg);
856 tegra_powergate_enable_clocks(pg);
857 usleep_range(10, 20);
858 reset_control_deassert(pg->reset);
859 usleep_range(10, 20);
862 tegra_powergate_disable_clocks(pg);
865 tegra_powergate_unprepare_clocks(pg);
870 static int tegra_genpd_power_on(struct generic_pm_domain *domain)
872 struct tegra_powergate *pg = to_powergate(domain);
873 struct device *dev = pg->pmc->dev;
876 err = tegra_powergate_power_up(pg, true);
878 dev_err(dev, "failed to turn on PM domain %s: %d\n",
879 pg->genpd.name, err);
883 reset_control_release(pg->reset);
889 static int tegra_genpd_power_off(struct generic_pm_domain *domain)
891 struct tegra_powergate *pg = to_powergate(domain);
892 struct device *dev = pg->pmc->dev;
895 err = reset_control_acquire(pg->reset);
897 dev_err(dev, "failed to acquire resets for PM domain %s: %d\n",
898 pg->genpd.name, err);
902 err = tegra_powergate_power_down(pg);
904 dev_err(dev, "failed to turn off PM domain %s: %d\n",
905 pg->genpd.name, err);
906 reset_control_release(pg->reset);
913 * tegra_powergate_power_on() - power on partition
916 int tegra_powergate_power_on(unsigned int id)
918 if (!tegra_powergate_is_available(pmc, id))
921 return tegra_powergate_set(pmc, id, true);
923 EXPORT_SYMBOL(tegra_powergate_power_on);
926 * tegra_powergate_power_off() - power off partition
929 int tegra_powergate_power_off(unsigned int id)
931 if (!tegra_powergate_is_available(pmc, id))
934 return tegra_powergate_set(pmc, id, false);
936 EXPORT_SYMBOL(tegra_powergate_power_off);
939 * tegra_powergate_is_powered() - check if partition is powered
940 * @pmc: power management controller
943 static int tegra_powergate_is_powered(struct tegra_pmc *pmc, unsigned int id)
945 if (!tegra_powergate_is_valid(pmc, id))
948 return tegra_powergate_state(id);
952 * tegra_powergate_remove_clamping() - remove power clamps for partition
955 int tegra_powergate_remove_clamping(unsigned int id)
957 if (!tegra_powergate_is_available(pmc, id))
960 return __tegra_powergate_remove_clamping(pmc, id);
962 EXPORT_SYMBOL(tegra_powergate_remove_clamping);
965 * tegra_powergate_sequence_power_up() - power up partition
967 * @clk: clock for partition
968 * @rst: reset for partition
970 * Must be called with clk disabled, and returns with clk enabled.
972 int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
973 struct reset_control *rst)
975 struct tegra_powergate *pg;
978 if (!tegra_powergate_is_available(pmc, id))
981 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
985 pg->clk_rates = kzalloc(sizeof(*pg->clk_rates), GFP_KERNEL);
986 if (!pg->clk_rates) {
997 err = tegra_powergate_power_up(pg, false);
999 dev_err(pmc->dev, "failed to turn on partition %d: %d\n", id,
1002 kfree(pg->clk_rates);
1007 EXPORT_SYMBOL(tegra_powergate_sequence_power_up);
1010 * tegra_get_cpu_powergate_id() - convert from CPU ID to partition ID
1011 * @pmc: power management controller
1012 * @cpuid: CPU partition ID
1014 * Returns the partition ID corresponding to the CPU partition ID or a
1015 * negative error code on failure.
1017 static int tegra_get_cpu_powergate_id(struct tegra_pmc *pmc,
1020 if (pmc->soc && cpuid < pmc->soc->num_cpu_powergates)
1021 return pmc->soc->cpu_powergates[cpuid];
1027 * tegra_pmc_cpu_is_powered() - check if CPU partition is powered
1028 * @cpuid: CPU partition ID
1030 bool tegra_pmc_cpu_is_powered(unsigned int cpuid)
1034 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1038 return tegra_powergate_is_powered(pmc, id);
1042 * tegra_pmc_cpu_power_on() - power on CPU partition
1043 * @cpuid: CPU partition ID
1045 int tegra_pmc_cpu_power_on(unsigned int cpuid)
1049 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1053 return tegra_powergate_set(pmc, id, true);
1057 * tegra_pmc_cpu_remove_clamping() - remove power clamps for CPU partition
1058 * @cpuid: CPU partition ID
1060 int tegra_pmc_cpu_remove_clamping(unsigned int cpuid)
1064 id = tegra_get_cpu_powergate_id(pmc, cpuid);
1068 return tegra_powergate_remove_clamping(id);
1071 static int tegra_pmc_restart_notify(struct notifier_block *this,
1072 unsigned long action, void *data)
1074 const char *cmd = data;
1077 value = tegra_pmc_scratch_readl(pmc, pmc->soc->regs->scratch0);
1078 value &= ~PMC_SCRATCH0_MODE_MASK;
1081 if (strcmp(cmd, "recovery") == 0)
1082 value |= PMC_SCRATCH0_MODE_RECOVERY;
1084 if (strcmp(cmd, "bootloader") == 0)
1085 value |= PMC_SCRATCH0_MODE_BOOTLOADER;
1087 if (strcmp(cmd, "forced-recovery") == 0)
1088 value |= PMC_SCRATCH0_MODE_RCM;
1091 tegra_pmc_scratch_writel(pmc, value, pmc->soc->regs->scratch0);
1093 /* reset everything but PMC_SCRATCH0 and PMC_RST_STATUS */
1094 value = tegra_pmc_readl(pmc, PMC_CNTRL);
1095 value |= PMC_CNTRL_MAIN_RST;
1096 tegra_pmc_writel(pmc, value, PMC_CNTRL);
1101 static struct notifier_block tegra_pmc_restart_handler = {
1102 .notifier_call = tegra_pmc_restart_notify,
1106 static int powergate_show(struct seq_file *s, void *data)
1111 seq_printf(s, " powergate powered\n");
1112 seq_printf(s, "------------------\n");
1114 for (i = 0; i < pmc->soc->num_powergates; i++) {
1115 status = tegra_powergate_is_powered(pmc, i);
1119 seq_printf(s, " %9s %7s\n", pmc->soc->powergates[i],
1120 status ? "yes" : "no");
1126 DEFINE_SHOW_ATTRIBUTE(powergate);
1128 static int tegra_powergate_debugfs_init(void)
1130 pmc->debugfs = debugfs_create_file("powergate", S_IRUGO, NULL, NULL,
1138 static int tegra_powergate_of_get_clks(struct tegra_powergate *pg,
1139 struct device_node *np)
1142 unsigned int i, count;
1145 count = of_clk_get_parent_count(np);
1149 pg->clks = kcalloc(count, sizeof(clk), GFP_KERNEL);
1153 pg->clk_rates = kcalloc(count, sizeof(*pg->clk_rates), GFP_KERNEL);
1154 if (!pg->clk_rates) {
1159 for (i = 0; i < count; i++) {
1160 pg->clks[i] = of_clk_get(np, i);
1161 if (IS_ERR(pg->clks[i])) {
1162 err = PTR_ERR(pg->clks[i]);
1167 pg->num_clks = count;
1173 clk_put(pg->clks[i]);
1175 kfree(pg->clk_rates);
1181 static int tegra_powergate_of_get_resets(struct tegra_powergate *pg,
1182 struct device_node *np, bool off)
1184 struct device *dev = pg->pmc->dev;
1187 pg->reset = of_reset_control_array_get_exclusive_released(np);
1188 if (IS_ERR(pg->reset)) {
1189 err = PTR_ERR(pg->reset);
1190 dev_err(dev, "failed to get device resets: %d\n", err);
1194 err = reset_control_acquire(pg->reset);
1196 pr_err("failed to acquire resets: %d\n", err);
1201 err = reset_control_assert(pg->reset);
1203 err = reset_control_deassert(pg->reset);
1207 reset_control_release(pg->reset);
1212 reset_control_release(pg->reset);
1213 reset_control_put(pg->reset);
1219 static int tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
1221 struct device *dev = pmc->dev;
1222 struct tegra_powergate *pg;
1226 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
1230 id = tegra_powergate_lookup(pmc, np->name);
1232 dev_err(dev, "powergate lookup failed for %pOFn: %d\n", np, id);
1238 * Clear the bit for this powergate so it cannot be managed
1239 * directly via the legacy APIs for controlling powergates.
1241 clear_bit(id, pmc->powergates_available);
1244 pg->genpd.name = np->name;
1245 pg->genpd.power_off = tegra_genpd_power_off;
1246 pg->genpd.power_on = tegra_genpd_power_on;
1249 off = !tegra_powergate_is_powered(pmc, pg->id);
1251 err = tegra_powergate_of_get_clks(pg, np);
1253 dev_err(dev, "failed to get clocks for %pOFn: %d\n", np, err);
1257 err = tegra_powergate_of_get_resets(pg, np, off);
1259 dev_err(dev, "failed to get resets for %pOFn: %d\n", np, err);
1263 if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) {
1265 WARN_ON(tegra_powergate_power_up(pg, true));
1270 err = pm_genpd_init(&pg->genpd, NULL, off);
1272 dev_err(dev, "failed to initialise PM domain %pOFn: %d\n", np,
1277 err = of_genpd_add_provider_simple(np, &pg->genpd);
1279 dev_err(dev, "failed to add PM domain provider for %pOFn: %d\n",
1284 dev_dbg(dev, "added PM domain %s\n", pg->genpd.name);
1289 pm_genpd_remove(&pg->genpd);
1292 reset_control_put(pg->reset);
1295 while (pg->num_clks--)
1296 clk_put(pg->clks[pg->num_clks]);
1301 set_bit(id, pmc->powergates_available);
1309 bool tegra_pmc_core_domain_state_synced(void)
1311 return pmc->core_domain_state_synced;
1315 tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd,
1318 struct dev_pm_opp *opp;
1321 opp = dev_pm_opp_find_level_ceil(&genpd->dev, &level);
1323 dev_err(&genpd->dev, "failed to find OPP for level %u: %pe\n",
1325 return PTR_ERR(opp);
1328 mutex_lock(&pmc->powergates_lock);
1329 err = dev_pm_opp_set_opp(pmc->dev, opp);
1330 mutex_unlock(&pmc->powergates_lock);
1332 dev_pm_opp_put(opp);
1335 dev_err(&genpd->dev, "failed to set voltage to %duV: %d\n",
1344 tegra_pmc_core_pd_opp_to_performance_state(struct generic_pm_domain *genpd,
1345 struct dev_pm_opp *opp)
1347 return dev_pm_opp_get_level(opp);
1350 static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np)
1352 struct generic_pm_domain *genpd;
1353 const char *rname = "core";
1356 genpd = devm_kzalloc(pmc->dev, sizeof(*genpd), GFP_KERNEL);
1360 genpd->name = np->name;
1361 genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state;
1362 genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state;
1364 err = devm_pm_opp_set_regulators(pmc->dev, &rname, 1);
1366 return dev_err_probe(pmc->dev, err,
1367 "failed to set core OPP regulator\n");
1369 err = pm_genpd_init(genpd, NULL, false);
1371 dev_err(pmc->dev, "failed to init core genpd: %d\n", err);
1375 err = of_genpd_add_provider_simple(np, genpd);
1377 dev_err(pmc->dev, "failed to add core genpd: %d\n", err);
1381 pmc->core_domain_registered = true;
1386 pm_genpd_remove(genpd);
1391 static int tegra_powergate_init(struct tegra_pmc *pmc,
1392 struct device_node *parent)
1394 struct of_phandle_args child_args, parent_args;
1395 struct device_node *np, *child;
1399 * Core power domain is the parent of powergate domains, hence it
1400 * should be registered first.
1402 np = of_get_child_by_name(parent, "core-domain");
1404 err = tegra_pmc_core_pd_add(pmc, np);
1410 np = of_get_child_by_name(parent, "powergates");
1414 for_each_child_of_node(np, child) {
1415 err = tegra_powergate_add(pmc, child);
1421 if (of_parse_phandle_with_args(child, "power-domains",
1422 "#power-domain-cells",
1426 child_args.np = child;
1427 child_args.args_count = 0;
1429 err = of_genpd_add_subdomain(&parent_args, &child_args);
1430 of_node_put(parent_args.np);
1442 static void tegra_powergate_remove(struct generic_pm_domain *genpd)
1444 struct tegra_powergate *pg = to_powergate(genpd);
1446 reset_control_put(pg->reset);
1448 while (pg->num_clks--)
1449 clk_put(pg->clks[pg->num_clks]);
1453 set_bit(pg->id, pmc->powergates_available);
1458 static void tegra_powergate_remove_all(struct device_node *parent)
1460 struct generic_pm_domain *genpd;
1461 struct device_node *np, *child;
1463 np = of_get_child_by_name(parent, "powergates");
1467 for_each_child_of_node(np, child) {
1468 of_genpd_del_provider(child);
1470 genpd = of_genpd_remove_last(child);
1474 tegra_powergate_remove(genpd);
1479 np = of_get_child_by_name(parent, "core-domain");
1481 of_genpd_del_provider(np);
1482 of_genpd_remove_last(np);
1486 static const struct tegra_io_pad_soc *
1487 tegra_io_pad_find(struct tegra_pmc *pmc, enum tegra_io_pad id)
1491 for (i = 0; i < pmc->soc->num_io_pads; i++)
1492 if (pmc->soc->io_pads[i].id == id)
1493 return &pmc->soc->io_pads[i];
1498 static int tegra_io_pad_get_dpd_register_bit(struct tegra_pmc *pmc,
1499 enum tegra_io_pad id,
1500 unsigned long *request,
1501 unsigned long *status,
1504 const struct tegra_io_pad_soc *pad;
1506 pad = tegra_io_pad_find(pmc, id);
1508 dev_err(pmc->dev, "invalid I/O pad ID %u\n", id);
1512 if (pad->dpd == UINT_MAX)
1515 *mask = BIT(pad->dpd % 32);
1517 if (pad->dpd < 32) {
1518 *status = pmc->soc->regs->dpd_status;
1519 *request = pmc->soc->regs->dpd_req;
1521 *status = pmc->soc->regs->dpd2_status;
1522 *request = pmc->soc->regs->dpd2_req;
1528 static int tegra_io_pad_prepare(struct tegra_pmc *pmc, enum tegra_io_pad id,
1529 unsigned long *request, unsigned long *status,
1532 unsigned long rate, value;
1535 err = tegra_io_pad_get_dpd_register_bit(pmc, id, request, status, mask);
1542 dev_err(pmc->dev, "failed to get clock rate\n");
1546 tegra_pmc_writel(pmc, DPD_SAMPLE_ENABLE, DPD_SAMPLE);
1548 /* must be at least 200 ns, in APB (PCLK) clock cycles */
1549 value = DIV_ROUND_UP(1000000000, rate);
1550 value = DIV_ROUND_UP(200, value);
1551 tegra_pmc_writel(pmc, value, SEL_DPD_TIM);
1557 static int tegra_io_pad_poll(struct tegra_pmc *pmc, unsigned long offset,
1558 u32 mask, u32 val, unsigned long timeout)
1562 timeout = jiffies + msecs_to_jiffies(timeout);
1564 while (time_after(timeout, jiffies)) {
1565 value = tegra_pmc_readl(pmc, offset);
1566 if ((value & mask) == val)
1569 usleep_range(250, 1000);
1575 static void tegra_io_pad_unprepare(struct tegra_pmc *pmc)
1578 tegra_pmc_writel(pmc, DPD_SAMPLE_DISABLE, DPD_SAMPLE);
1582 * tegra_io_pad_power_enable() - enable power to I/O pad
1583 * @id: Tegra I/O pad ID for which to enable power
1585 * Returns: 0 on success or a negative error code on failure.
1587 int tegra_io_pad_power_enable(enum tegra_io_pad id)
1589 unsigned long request, status;
1593 mutex_lock(&pmc->powergates_lock);
1595 err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask);
1597 dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err);
1601 tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_OFF | mask, request);
1603 err = tegra_io_pad_poll(pmc, status, mask, 0, 250);
1605 dev_err(pmc->dev, "failed to enable I/O pad: %d\n", err);
1609 tegra_io_pad_unprepare(pmc);
1612 mutex_unlock(&pmc->powergates_lock);
1615 EXPORT_SYMBOL(tegra_io_pad_power_enable);
1618 * tegra_io_pad_power_disable() - disable power to I/O pad
1619 * @id: Tegra I/O pad ID for which to disable power
1621 * Returns: 0 on success or a negative error code on failure.
1623 int tegra_io_pad_power_disable(enum tegra_io_pad id)
1625 unsigned long request, status;
1629 mutex_lock(&pmc->powergates_lock);
1631 err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask);
1633 dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err);
1637 tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_ON | mask, request);
1639 err = tegra_io_pad_poll(pmc, status, mask, mask, 250);
1641 dev_err(pmc->dev, "failed to disable I/O pad: %d\n", err);
1645 tegra_io_pad_unprepare(pmc);
1648 mutex_unlock(&pmc->powergates_lock);
1651 EXPORT_SYMBOL(tegra_io_pad_power_disable);
1653 static int tegra_io_pad_is_powered(struct tegra_pmc *pmc, enum tegra_io_pad id)
1655 unsigned long request, status;
1659 err = tegra_io_pad_get_dpd_register_bit(pmc, id, &request, &status,
1664 value = tegra_pmc_readl(pmc, status);
1666 return !(value & mask);
1669 static int tegra_io_pad_set_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id,
1672 const struct tegra_io_pad_soc *pad;
1675 pad = tegra_io_pad_find(pmc, id);
1679 if (pad->voltage == UINT_MAX)
1682 mutex_lock(&pmc->powergates_lock);
1684 if (pmc->soc->has_impl_33v_pwr) {
1685 value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR);
1687 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1688 value &= ~BIT(pad->voltage);
1690 value |= BIT(pad->voltage);
1692 tegra_pmc_writel(pmc, value, PMC_IMPL_E_33V_PWR);
1694 /* write-enable PMC_PWR_DET_VALUE[pad->voltage] */
1695 value = tegra_pmc_readl(pmc, PMC_PWR_DET);
1696 value |= BIT(pad->voltage);
1697 tegra_pmc_writel(pmc, value, PMC_PWR_DET);
1699 /* update I/O voltage */
1700 value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE);
1702 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1703 value &= ~BIT(pad->voltage);
1705 value |= BIT(pad->voltage);
1707 tegra_pmc_writel(pmc, value, PMC_PWR_DET_VALUE);
1710 mutex_unlock(&pmc->powergates_lock);
1712 usleep_range(100, 250);
1717 static int tegra_io_pad_get_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id)
1719 const struct tegra_io_pad_soc *pad;
1722 pad = tegra_io_pad_find(pmc, id);
1726 if (pad->voltage == UINT_MAX)
1729 if (pmc->soc->has_impl_33v_pwr)
1730 value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR);
1732 value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE);
1734 if ((value & BIT(pad->voltage)) == 0)
1735 return TEGRA_IO_PAD_VOLTAGE_1V8;
1737 return TEGRA_IO_PAD_VOLTAGE_3V3;
1741 * tegra_io_rail_power_on() - enable power to I/O rail
1742 * @id: Tegra I/O pad ID for which to enable power
1744 * See also: tegra_io_pad_power_enable()
1746 int tegra_io_rail_power_on(unsigned int id)
1748 return tegra_io_pad_power_enable(id);
1750 EXPORT_SYMBOL(tegra_io_rail_power_on);
1753 * tegra_io_rail_power_off() - disable power to I/O rail
1754 * @id: Tegra I/O pad ID for which to disable power
1756 * See also: tegra_io_pad_power_disable()
1758 int tegra_io_rail_power_off(unsigned int id)
1760 return tegra_io_pad_power_disable(id);
1762 EXPORT_SYMBOL(tegra_io_rail_power_off);
1764 #ifdef CONFIG_PM_SLEEP
1765 enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void)
1767 return pmc->suspend_mode;
1770 void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode)
1772 if (mode < TEGRA_SUSPEND_NONE || mode >= TEGRA_MAX_SUSPEND_MODE)
1775 pmc->suspend_mode = mode;
1778 void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode)
1780 unsigned long long rate = 0;
1785 case TEGRA_SUSPEND_LP1:
1789 case TEGRA_SUSPEND_LP2:
1797 if (WARN_ON_ONCE(rate == 0))
1800 ticks = pmc->cpu_good_time * rate + USEC_PER_SEC - 1;
1801 do_div(ticks, USEC_PER_SEC);
1802 tegra_pmc_writel(pmc, ticks, PMC_CPUPWRGOOD_TIMER);
1804 ticks = pmc->cpu_off_time * rate + USEC_PER_SEC - 1;
1805 do_div(ticks, USEC_PER_SEC);
1806 tegra_pmc_writel(pmc, ticks, PMC_CPUPWROFF_TIMER);
1808 value = tegra_pmc_readl(pmc, PMC_CNTRL);
1809 value &= ~PMC_CNTRL_SIDE_EFFECT_LP0;
1810 value |= PMC_CNTRL_CPU_PWRREQ_OE;
1811 tegra_pmc_writel(pmc, value, PMC_CNTRL);
1815 static int tegra_pmc_parse_dt(struct tegra_pmc *pmc, struct device_node *np)
1817 u32 value, values[2];
1819 if (of_property_read_u32(np, "nvidia,suspend-mode", &value)) {
1823 pmc->suspend_mode = TEGRA_SUSPEND_LP0;
1827 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1831 pmc->suspend_mode = TEGRA_SUSPEND_LP2;
1835 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1840 pmc->suspend_mode = tegra_pm_validate_suspend_mode(pmc->suspend_mode);
1842 if (of_property_read_u32(np, "nvidia,cpu-pwr-good-time", &value))
1843 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1845 pmc->cpu_good_time = value;
1847 if (of_property_read_u32(np, "nvidia,cpu-pwr-off-time", &value))
1848 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1850 pmc->cpu_off_time = value;
1852 if (of_property_read_u32_array(np, "nvidia,core-pwr-good-time",
1853 values, ARRAY_SIZE(values)))
1854 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1856 pmc->core_osc_time = values[0];
1857 pmc->core_pmu_time = values[1];
1859 if (of_property_read_u32(np, "nvidia,core-pwr-off-time", &value))
1860 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1862 pmc->core_off_time = value;
1864 pmc->corereq_high = of_property_read_bool(np,
1865 "nvidia,core-power-req-active-high");
1867 pmc->sysclkreq_high = of_property_read_bool(np,
1868 "nvidia,sys-clock-req-active-high");
1870 pmc->combined_req = of_property_read_bool(np,
1871 "nvidia,combined-power-req");
1873 pmc->cpu_pwr_good_en = of_property_read_bool(np,
1874 "nvidia,cpu-pwr-good-en");
1876 if (of_property_read_u32_array(np, "nvidia,lp0-vec", values,
1877 ARRAY_SIZE(values)))
1878 if (pmc->suspend_mode == TEGRA_SUSPEND_LP0)
1879 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1881 pmc->lp0_vec_phys = values[0];
1882 pmc->lp0_vec_size = values[1];
1887 static void tegra_pmc_init(struct tegra_pmc *pmc)
1890 pmc->soc->init(pmc);
1893 static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc)
1895 static const char disabled[] = "emergency thermal reset disabled";
1896 u32 pmu_addr, ctrl_id, reg_addr, reg_data, pinmux;
1897 struct device *dev = pmc->dev;
1898 struct device_node *np;
1899 u32 value, checksum;
1901 if (!pmc->soc->has_tsense_reset)
1904 np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip");
1906 dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled);
1910 if (of_property_read_u32(np, "nvidia,i2c-controller-id", &ctrl_id)) {
1911 dev_err(dev, "I2C controller ID missing, %s.\n", disabled);
1915 if (of_property_read_u32(np, "nvidia,bus-addr", &pmu_addr)) {
1916 dev_err(dev, "nvidia,bus-addr missing, %s.\n", disabled);
1920 if (of_property_read_u32(np, "nvidia,reg-addr", ®_addr)) {
1921 dev_err(dev, "nvidia,reg-addr missing, %s.\n", disabled);
1925 if (of_property_read_u32(np, "nvidia,reg-data", ®_data)) {
1926 dev_err(dev, "nvidia,reg-data missing, %s.\n", disabled);
1930 if (of_property_read_u32(np, "nvidia,pinmux-id", &pinmux))
1933 value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL);
1934 value |= PMC_SENSOR_CTRL_SCRATCH_WRITE;
1935 tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL);
1937 value = (reg_data << PMC_SCRATCH54_DATA_SHIFT) |
1938 (reg_addr << PMC_SCRATCH54_ADDR_SHIFT);
1939 tegra_pmc_writel(pmc, value, PMC_SCRATCH54);
1941 value = PMC_SCRATCH55_RESET_TEGRA;
1942 value |= ctrl_id << PMC_SCRATCH55_CNTRL_ID_SHIFT;
1943 value |= pinmux << PMC_SCRATCH55_PINMUX_SHIFT;
1944 value |= pmu_addr << PMC_SCRATCH55_I2CSLV1_SHIFT;
1947 * Calculate checksum of SCRATCH54, SCRATCH55 fields. Bits 23:16 will
1948 * contain the checksum and are currently zero, so they are not added.
1950 checksum = reg_addr + reg_data + (value & 0xff) + ((value >> 8) & 0xff)
1951 + ((value >> 24) & 0xff);
1953 checksum = 0x100 - checksum;
1955 value |= checksum << PMC_SCRATCH55_CHECKSUM_SHIFT;
1957 tegra_pmc_writel(pmc, value, PMC_SCRATCH55);
1959 value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL);
1960 value |= PMC_SENSOR_CTRL_ENABLE_RST;
1961 tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL);
1963 dev_info(pmc->dev, "emergency thermal reset enabled\n");
1969 static int tegra_io_pad_pinctrl_get_groups_count(struct pinctrl_dev *pctl_dev)
1971 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
1973 return pmc->soc->num_io_pads;
1976 static const char *tegra_io_pad_pinctrl_get_group_name(struct pinctrl_dev *pctl,
1979 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl);
1981 return pmc->soc->io_pads[group].name;
1984 static int tegra_io_pad_pinctrl_get_group_pins(struct pinctrl_dev *pctl_dev,
1986 const unsigned int **pins,
1987 unsigned int *num_pins)
1989 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
1991 *pins = &pmc->soc->io_pads[group].id;
1997 static const struct pinctrl_ops tegra_io_pad_pinctrl_ops = {
1998 .get_groups_count = tegra_io_pad_pinctrl_get_groups_count,
1999 .get_group_name = tegra_io_pad_pinctrl_get_group_name,
2000 .get_group_pins = tegra_io_pad_pinctrl_get_group_pins,
2001 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
2002 .dt_free_map = pinconf_generic_dt_free_map,
2005 static int tegra_io_pad_pinconf_get(struct pinctrl_dev *pctl_dev,
2006 unsigned int pin, unsigned long *config)
2008 enum pin_config_param param = pinconf_to_config_param(*config);
2009 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2010 const struct tegra_io_pad_soc *pad;
2014 pad = tegra_io_pad_find(pmc, pin);
2019 case PIN_CONFIG_POWER_SOURCE:
2020 ret = tegra_io_pad_get_voltage(pmc, pad->id);
2027 case PIN_CONFIG_MODE_LOW_POWER:
2028 ret = tegra_io_pad_is_powered(pmc, pad->id);
2039 *config = pinconf_to_config_packed(param, arg);
2044 static int tegra_io_pad_pinconf_set(struct pinctrl_dev *pctl_dev,
2045 unsigned int pin, unsigned long *configs,
2046 unsigned int num_configs)
2048 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
2049 const struct tegra_io_pad_soc *pad;
2050 enum pin_config_param param;
2055 pad = tegra_io_pad_find(pmc, pin);
2059 for (i = 0; i < num_configs; ++i) {
2060 param = pinconf_to_config_param(configs[i]);
2061 arg = pinconf_to_config_argument(configs[i]);
2064 case PIN_CONFIG_MODE_LOW_POWER:
2066 err = tegra_io_pad_power_disable(pad->id);
2068 err = tegra_io_pad_power_enable(pad->id);
2072 case PIN_CONFIG_POWER_SOURCE:
2073 if (arg != TEGRA_IO_PAD_VOLTAGE_1V8 &&
2074 arg != TEGRA_IO_PAD_VOLTAGE_3V3)
2076 err = tegra_io_pad_set_voltage(pmc, pad->id, arg);
2088 static const struct pinconf_ops tegra_io_pad_pinconf_ops = {
2089 .pin_config_get = tegra_io_pad_pinconf_get,
2090 .pin_config_set = tegra_io_pad_pinconf_set,
2094 static struct pinctrl_desc tegra_pmc_pctl_desc = {
2095 .pctlops = &tegra_io_pad_pinctrl_ops,
2096 .confops = &tegra_io_pad_pinconf_ops,
2099 static int tegra_pmc_pinctrl_init(struct tegra_pmc *pmc)
2103 if (!pmc->soc->num_pin_descs)
2106 tegra_pmc_pctl_desc.name = dev_name(pmc->dev);
2107 tegra_pmc_pctl_desc.pins = pmc->soc->pin_descs;
2108 tegra_pmc_pctl_desc.npins = pmc->soc->num_pin_descs;
2110 pmc->pctl_dev = devm_pinctrl_register(pmc->dev, &tegra_pmc_pctl_desc,
2112 if (IS_ERR(pmc->pctl_dev)) {
2113 err = PTR_ERR(pmc->pctl_dev);
2114 dev_err(pmc->dev, "failed to register pin controller: %d\n",
2122 static ssize_t reset_reason_show(struct device *dev,
2123 struct device_attribute *attr, char *buf)
2127 value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status);
2128 value &= pmc->soc->regs->rst_source_mask;
2129 value >>= pmc->soc->regs->rst_source_shift;
2131 if (WARN_ON(value >= pmc->soc->num_reset_sources))
2132 return sprintf(buf, "%s\n", "UNKNOWN");
2134 return sprintf(buf, "%s\n", pmc->soc->reset_sources[value]);
2137 static DEVICE_ATTR_RO(reset_reason);
2139 static ssize_t reset_level_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_level_mask;
2146 value >>= pmc->soc->regs->rst_level_shift;
2148 if (WARN_ON(value >= pmc->soc->num_reset_levels))
2149 return sprintf(buf, "%s\n", "UNKNOWN");
2151 return sprintf(buf, "%s\n", pmc->soc->reset_levels[value]);
2154 static DEVICE_ATTR_RO(reset_level);
2156 static void tegra_pmc_reset_sysfs_init(struct tegra_pmc *pmc)
2158 struct device *dev = pmc->dev;
2161 if (pmc->soc->reset_sources) {
2162 err = device_create_file(dev, &dev_attr_reset_reason);
2165 "failed to create attr \"reset_reason\": %d\n",
2169 if (pmc->soc->reset_levels) {
2170 err = device_create_file(dev, &dev_attr_reset_level);
2173 "failed to create attr \"reset_level\": %d\n",
2178 static int tegra_pmc_irq_translate(struct irq_domain *domain,
2179 struct irq_fwspec *fwspec,
2180 unsigned long *hwirq,
2183 if (WARN_ON(fwspec->param_count < 2))
2186 *hwirq = fwspec->param[0];
2187 *type = fwspec->param[1];
2192 static int tegra_pmc_irq_alloc(struct irq_domain *domain, unsigned int virq,
2193 unsigned int num_irqs, void *data)
2195 struct tegra_pmc *pmc = domain->host_data;
2196 const struct tegra_pmc_soc *soc = pmc->soc;
2197 struct irq_fwspec *fwspec = data;
2201 if (WARN_ON(num_irqs > 1))
2204 for (i = 0; i < soc->num_wake_events; i++) {
2205 const struct tegra_wake_event *event = &soc->wake_events[i];
2207 if (fwspec->param_count == 2) {
2208 struct irq_fwspec spec;
2210 if (event->id != fwspec->param[0])
2213 err = irq_domain_set_hwirq_and_chip(domain, virq,
2219 spec.fwnode = &pmc->dev->of_node->fwnode;
2220 spec.param_count = 3;
2221 spec.param[0] = GIC_SPI;
2222 spec.param[1] = event->irq;
2223 spec.param[2] = fwspec->param[1];
2225 err = irq_domain_alloc_irqs_parent(domain, virq,
2231 if (fwspec->param_count == 3) {
2232 if (event->gpio.instance != fwspec->param[0] ||
2233 event->gpio.pin != fwspec->param[1])
2236 err = irq_domain_set_hwirq_and_chip(domain, virq,
2240 /* GPIO hierarchies stop at the PMC level */
2241 if (!err && domain->parent)
2242 err = irq_domain_disconnect_hierarchy(domain->parent,
2248 /* If there is no wake-up event, there is no PMC mapping */
2249 if (i == soc->num_wake_events)
2250 err = irq_domain_disconnect_hierarchy(domain, virq);
2255 static const struct irq_domain_ops tegra_pmc_irq_domain_ops = {
2256 .translate = tegra_pmc_irq_translate,
2257 .alloc = tegra_pmc_irq_alloc,
2260 static int tegra210_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
2262 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2263 unsigned int offset, bit;
2266 offset = data->hwirq / 32;
2267 bit = data->hwirq % 32;
2269 /* clear wake status */
2270 tegra_pmc_writel(pmc, 0, PMC_SW_WAKE_STATUS);
2271 tegra_pmc_writel(pmc, 0, PMC_SW_WAKE2_STATUS);
2273 tegra_pmc_writel(pmc, 0, PMC_WAKE_STATUS);
2274 tegra_pmc_writel(pmc, 0, PMC_WAKE2_STATUS);
2276 /* enable PMC wake */
2277 if (data->hwirq >= 32)
2278 offset = PMC_WAKE2_MASK;
2280 offset = PMC_WAKE_MASK;
2282 value = tegra_pmc_readl(pmc, offset);
2289 tegra_pmc_writel(pmc, value, offset);
2294 static int tegra210_pmc_irq_set_type(struct irq_data *data, unsigned int type)
2296 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2297 unsigned int offset, bit;
2300 offset = data->hwirq / 32;
2301 bit = data->hwirq % 32;
2303 if (data->hwirq >= 32)
2304 offset = PMC_WAKE2_LEVEL;
2306 offset = PMC_WAKE_LEVEL;
2308 value = tegra_pmc_readl(pmc, offset);
2311 case IRQ_TYPE_EDGE_RISING:
2312 case IRQ_TYPE_LEVEL_HIGH:
2316 case IRQ_TYPE_EDGE_FALLING:
2317 case IRQ_TYPE_LEVEL_LOW:
2321 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
2329 tegra_pmc_writel(pmc, value, offset);
2334 static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
2336 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2337 unsigned int offset, bit;
2340 offset = data->hwirq / 32;
2341 bit = data->hwirq % 32;
2343 /* clear wake status */
2344 writel(0x1, pmc->wake + WAKE_AOWAKE_STATUS_W(data->hwirq));
2346 /* route wake to tier 2 */
2347 value = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
2350 value &= ~(1 << bit);
2354 writel(value, pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
2356 /* enable wakeup event */
2357 writel(!!on, pmc->wake + WAKE_AOWAKE_MASK_W(data->hwirq));
2362 static int tegra186_pmc_irq_set_type(struct irq_data *data, unsigned int type)
2364 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2367 value = readl(pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
2370 case IRQ_TYPE_EDGE_RISING:
2371 case IRQ_TYPE_LEVEL_HIGH:
2372 value |= WAKE_AOWAKE_CNTRL_LEVEL;
2375 case IRQ_TYPE_EDGE_FALLING:
2376 case IRQ_TYPE_LEVEL_LOW:
2377 value &= ~WAKE_AOWAKE_CNTRL_LEVEL;
2380 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
2381 value ^= WAKE_AOWAKE_CNTRL_LEVEL;
2388 writel(value, pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
2393 static void tegra_irq_mask_parent(struct irq_data *data)
2395 if (data->parent_data)
2396 irq_chip_mask_parent(data);
2399 static void tegra_irq_unmask_parent(struct irq_data *data)
2401 if (data->parent_data)
2402 irq_chip_unmask_parent(data);
2405 static void tegra_irq_eoi_parent(struct irq_data *data)
2407 if (data->parent_data)
2408 irq_chip_eoi_parent(data);
2411 static int tegra_irq_set_affinity_parent(struct irq_data *data,
2412 const struct cpumask *dest,
2415 if (data->parent_data)
2416 return irq_chip_set_affinity_parent(data, dest, force);
2421 static int tegra_pmc_irq_init(struct tegra_pmc *pmc)
2423 struct irq_domain *parent = NULL;
2424 struct device_node *np;
2426 np = of_irq_find_parent(pmc->dev->of_node);
2428 parent = irq_find_host(np);
2435 pmc->irq.name = dev_name(pmc->dev);
2436 pmc->irq.irq_mask = tegra_irq_mask_parent;
2437 pmc->irq.irq_unmask = tegra_irq_unmask_parent;
2438 pmc->irq.irq_eoi = tegra_irq_eoi_parent;
2439 pmc->irq.irq_set_affinity = tegra_irq_set_affinity_parent;
2440 pmc->irq.irq_set_type = pmc->soc->irq_set_type;
2441 pmc->irq.irq_set_wake = pmc->soc->irq_set_wake;
2443 pmc->domain = irq_domain_add_hierarchy(parent, 0, 96, pmc->dev->of_node,
2444 &tegra_pmc_irq_domain_ops, pmc);
2446 dev_err(pmc->dev, "failed to allocate domain\n");
2453 static int tegra_pmc_clk_notify_cb(struct notifier_block *nb,
2454 unsigned long action, void *ptr)
2456 struct tegra_pmc *pmc = container_of(nb, struct tegra_pmc, clk_nb);
2457 struct clk_notifier_data *data = ptr;
2460 case PRE_RATE_CHANGE:
2461 mutex_lock(&pmc->powergates_lock);
2464 case POST_RATE_CHANGE:
2465 pmc->rate = data->new_rate;
2468 case ABORT_RATE_CHANGE:
2469 mutex_unlock(&pmc->powergates_lock);
2474 return notifier_from_errno(-EINVAL);
2480 static void pmc_clk_fence_udelay(u32 offset)
2482 tegra_pmc_readl(pmc, offset);
2483 /* pmc clk propagation delay 2 us */
2487 static u8 pmc_clk_mux_get_parent(struct clk_hw *hw)
2489 struct pmc_clk *clk = to_pmc_clk(hw);
2492 val = tegra_pmc_readl(pmc, clk->offs) >> clk->mux_shift;
2493 val &= PMC_CLK_OUT_MUX_MASK;
2498 static int pmc_clk_mux_set_parent(struct clk_hw *hw, u8 index)
2500 struct pmc_clk *clk = to_pmc_clk(hw);
2503 val = tegra_pmc_readl(pmc, clk->offs);
2504 val &= ~(PMC_CLK_OUT_MUX_MASK << clk->mux_shift);
2505 val |= index << clk->mux_shift;
2506 tegra_pmc_writel(pmc, val, clk->offs);
2507 pmc_clk_fence_udelay(clk->offs);
2512 static int pmc_clk_is_enabled(struct clk_hw *hw)
2514 struct pmc_clk *clk = to_pmc_clk(hw);
2517 val = tegra_pmc_readl(pmc, clk->offs) & BIT(clk->force_en_shift);
2522 static void pmc_clk_set_state(unsigned long offs, u32 shift, int state)
2526 val = tegra_pmc_readl(pmc, offs);
2527 val = state ? (val | BIT(shift)) : (val & ~BIT(shift));
2528 tegra_pmc_writel(pmc, val, offs);
2529 pmc_clk_fence_udelay(offs);
2532 static int pmc_clk_enable(struct clk_hw *hw)
2534 struct pmc_clk *clk = to_pmc_clk(hw);
2536 pmc_clk_set_state(clk->offs, clk->force_en_shift, 1);
2541 static void pmc_clk_disable(struct clk_hw *hw)
2543 struct pmc_clk *clk = to_pmc_clk(hw);
2545 pmc_clk_set_state(clk->offs, clk->force_en_shift, 0);
2548 static const struct clk_ops pmc_clk_ops = {
2549 .get_parent = pmc_clk_mux_get_parent,
2550 .set_parent = pmc_clk_mux_set_parent,
2551 .determine_rate = __clk_mux_determine_rate,
2552 .is_enabled = pmc_clk_is_enabled,
2553 .enable = pmc_clk_enable,
2554 .disable = pmc_clk_disable,
2558 tegra_pmc_clk_out_register(struct tegra_pmc *pmc,
2559 const struct pmc_clk_init_data *data,
2560 unsigned long offset)
2562 struct clk_init_data init;
2563 struct pmc_clk *pmc_clk;
2565 pmc_clk = devm_kzalloc(pmc->dev, sizeof(*pmc_clk), GFP_KERNEL);
2567 return ERR_PTR(-ENOMEM);
2569 init.name = data->name;
2570 init.ops = &pmc_clk_ops;
2571 init.parent_names = data->parents;
2572 init.num_parents = data->num_parents;
2573 init.flags = CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT |
2574 CLK_SET_PARENT_GATE;
2576 pmc_clk->hw.init = &init;
2577 pmc_clk->offs = offset;
2578 pmc_clk->mux_shift = data->mux_shift;
2579 pmc_clk->force_en_shift = data->force_en_shift;
2581 return clk_register(NULL, &pmc_clk->hw);
2584 static int pmc_clk_gate_is_enabled(struct clk_hw *hw)
2586 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2588 return tegra_pmc_readl(pmc, gate->offs) & BIT(gate->shift) ? 1 : 0;
2591 static int pmc_clk_gate_enable(struct clk_hw *hw)
2593 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2595 pmc_clk_set_state(gate->offs, gate->shift, 1);
2600 static void pmc_clk_gate_disable(struct clk_hw *hw)
2602 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2604 pmc_clk_set_state(gate->offs, gate->shift, 0);
2607 static const struct clk_ops pmc_clk_gate_ops = {
2608 .is_enabled = pmc_clk_gate_is_enabled,
2609 .enable = pmc_clk_gate_enable,
2610 .disable = pmc_clk_gate_disable,
2614 tegra_pmc_clk_gate_register(struct tegra_pmc *pmc, const char *name,
2615 const char *parent_name, unsigned long offset,
2618 struct clk_init_data init;
2619 struct pmc_clk_gate *gate;
2621 gate = devm_kzalloc(pmc->dev, sizeof(*gate), GFP_KERNEL);
2623 return ERR_PTR(-ENOMEM);
2626 init.ops = &pmc_clk_gate_ops;
2627 init.parent_names = &parent_name;
2628 init.num_parents = 1;
2631 gate->hw.init = &init;
2632 gate->offs = offset;
2633 gate->shift = shift;
2635 return clk_register(NULL, &gate->hw);
2638 static void tegra_pmc_clock_register(struct tegra_pmc *pmc,
2639 struct device_node *np)
2642 struct clk_onecell_data *clk_data;
2643 unsigned int num_clks;
2646 num_clks = pmc->soc->num_pmc_clks;
2647 if (pmc->soc->has_blink_output)
2653 clk_data = devm_kmalloc(pmc->dev, sizeof(*clk_data), GFP_KERNEL);
2657 clk_data->clks = devm_kcalloc(pmc->dev, TEGRA_PMC_CLK_MAX,
2658 sizeof(*clk_data->clks), GFP_KERNEL);
2659 if (!clk_data->clks)
2662 clk_data->clk_num = TEGRA_PMC_CLK_MAX;
2664 for (i = 0; i < TEGRA_PMC_CLK_MAX; i++)
2665 clk_data->clks[i] = ERR_PTR(-ENOENT);
2667 for (i = 0; i < pmc->soc->num_pmc_clks; i++) {
2668 const struct pmc_clk_init_data *data;
2670 data = pmc->soc->pmc_clks_data + i;
2672 clk = tegra_pmc_clk_out_register(pmc, data, PMC_CLK_OUT_CNTRL);
2674 dev_warn(pmc->dev, "unable to register clock %s: %d\n",
2675 data->name, PTR_ERR_OR_ZERO(clk));
2679 err = clk_register_clkdev(clk, data->name, NULL);
2682 "unable to register %s clock lookup: %d\n",
2687 clk_data->clks[data->clk_id] = clk;
2690 if (pmc->soc->has_blink_output) {
2691 tegra_pmc_writel(pmc, 0x0, PMC_BLINK_TIMER);
2692 clk = tegra_pmc_clk_gate_register(pmc,
2693 "pmc_blink_override",
2696 PMC_DPD_PADS_ORIDE_BLINK);
2699 "unable to register pmc_blink_override: %d\n",
2700 PTR_ERR_OR_ZERO(clk));
2704 clk = tegra_pmc_clk_gate_register(pmc, "pmc_blink",
2705 "pmc_blink_override",
2707 PMC_CNTRL_BLINK_EN);
2710 "unable to register pmc_blink: %d\n",
2711 PTR_ERR_OR_ZERO(clk));
2715 err = clk_register_clkdev(clk, "pmc_blink", NULL);
2718 "unable to register pmc_blink lookup: %d\n",
2723 clk_data->clks[TEGRA_PMC_CLK_BLINK] = clk;
2726 err = of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
2728 dev_warn(pmc->dev, "failed to add pmc clock provider: %d\n",
2732 static const struct regmap_range pmc_usb_sleepwalk_ranges[] = {
2733 regmap_reg_range(PMC_USB_DEBOUNCE_DEL, PMC_USB_AO),
2734 regmap_reg_range(PMC_UTMIP_UHSIC_TRIGGERS, PMC_UTMIP_UHSIC_SAVED_STATE),
2735 regmap_reg_range(PMC_UTMIP_TERM_PAD_CFG, PMC_UTMIP_UHSIC_FAKE),
2736 regmap_reg_range(PMC_UTMIP_UHSIC_LINE_WAKEUP, PMC_UTMIP_UHSIC_LINE_WAKEUP),
2737 regmap_reg_range(PMC_UTMIP_BIAS_MASTER_CNTRL, PMC_UTMIP_MASTER_CONFIG),
2738 regmap_reg_range(PMC_UTMIP_UHSIC2_TRIGGERS, PMC_UTMIP_MASTER2_CONFIG),
2739 regmap_reg_range(PMC_UTMIP_PAD_CFG0, PMC_UTMIP_UHSIC_SLEEP_CFG1),
2740 regmap_reg_range(PMC_UTMIP_SLEEPWALK_P3, PMC_UTMIP_SLEEPWALK_P3),
2743 static const struct regmap_access_table pmc_usb_sleepwalk_table = {
2744 .yes_ranges = pmc_usb_sleepwalk_ranges,
2745 .n_yes_ranges = ARRAY_SIZE(pmc_usb_sleepwalk_ranges),
2748 static int tegra_pmc_regmap_readl(void *context, unsigned int offset, unsigned int *value)
2750 struct tegra_pmc *pmc = context;
2752 *value = tegra_pmc_readl(pmc, offset);
2756 static int tegra_pmc_regmap_writel(void *context, unsigned int offset, unsigned int value)
2758 struct tegra_pmc *pmc = context;
2760 tegra_pmc_writel(pmc, value, offset);
2764 static const struct regmap_config usb_sleepwalk_regmap_config = {
2765 .name = "usb_sleepwalk",
2770 .rd_table = &pmc_usb_sleepwalk_table,
2771 .wr_table = &pmc_usb_sleepwalk_table,
2772 .reg_read = tegra_pmc_regmap_readl,
2773 .reg_write = tegra_pmc_regmap_writel,
2776 static int tegra_pmc_regmap_init(struct tegra_pmc *pmc)
2778 struct regmap *regmap;
2781 if (pmc->soc->has_usb_sleepwalk) {
2782 regmap = devm_regmap_init(pmc->dev, NULL, pmc, &usb_sleepwalk_regmap_config);
2783 if (IS_ERR(regmap)) {
2784 err = PTR_ERR(regmap);
2785 dev_err(pmc->dev, "failed to allocate register map (%d)\n", err);
2793 static int tegra_pmc_probe(struct platform_device *pdev)
2796 struct resource *res;
2800 * Early initialisation should have configured an initial
2801 * register mapping and setup the soc data pointer. If these
2802 * are not valid then something went badly wrong!
2804 if (WARN_ON(!pmc->base || !pmc->soc))
2807 err = tegra_pmc_parse_dt(pmc, pdev->dev.of_node);
2811 /* take over the memory region from the early initialization */
2812 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2813 base = devm_ioremap_resource(&pdev->dev, res);
2815 return PTR_ERR(base);
2817 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wake");
2819 pmc->wake = devm_ioremap_resource(&pdev->dev, res);
2820 if (IS_ERR(pmc->wake))
2821 return PTR_ERR(pmc->wake);
2826 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aotag");
2828 pmc->aotag = devm_ioremap_resource(&pdev->dev, res);
2829 if (IS_ERR(pmc->aotag))
2830 return PTR_ERR(pmc->aotag);
2835 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scratch");
2837 pmc->scratch = devm_ioremap_resource(&pdev->dev, res);
2838 if (IS_ERR(pmc->scratch))
2839 return PTR_ERR(pmc->scratch);
2841 pmc->scratch = base;
2844 pmc->clk = devm_clk_get(&pdev->dev, "pclk");
2845 if (IS_ERR(pmc->clk)) {
2846 err = PTR_ERR(pmc->clk);
2848 if (err != -ENOENT) {
2849 dev_err(&pdev->dev, "failed to get pclk: %d\n", err);
2857 * PCLK clock rate can't be retrieved using CLK API because it
2858 * causes lockup if CPU enters LP2 idle state from some other
2859 * CLK notifier, hence we're caching the rate's value locally.
2862 pmc->clk_nb.notifier_call = tegra_pmc_clk_notify_cb;
2863 err = clk_notifier_register(pmc->clk, &pmc->clk_nb);
2866 "failed to register clk notifier\n");
2870 pmc->rate = clk_get_rate(pmc->clk);
2873 pmc->dev = &pdev->dev;
2875 tegra_pmc_init(pmc);
2877 tegra_pmc_init_tsense_reset(pmc);
2879 tegra_pmc_reset_sysfs_init(pmc);
2881 if (IS_ENABLED(CONFIG_DEBUG_FS)) {
2882 err = tegra_powergate_debugfs_init();
2887 err = register_restart_handler(&tegra_pmc_restart_handler);
2889 dev_err(&pdev->dev, "unable to register restart handler, %d\n",
2891 goto cleanup_debugfs;
2894 err = tegra_pmc_pinctrl_init(pmc);
2896 goto cleanup_restart_handler;
2898 err = tegra_pmc_regmap_init(pmc);
2900 goto cleanup_restart_handler;
2902 err = tegra_powergate_init(pmc, pdev->dev.of_node);
2904 goto cleanup_powergates;
2906 err = tegra_pmc_irq_init(pmc);
2908 goto cleanup_powergates;
2910 mutex_lock(&pmc->powergates_lock);
2913 mutex_unlock(&pmc->powergates_lock);
2915 tegra_pmc_clock_register(pmc, pdev->dev.of_node);
2916 platform_set_drvdata(pdev, pmc);
2921 tegra_powergate_remove_all(pdev->dev.of_node);
2922 cleanup_restart_handler:
2923 unregister_restart_handler(&tegra_pmc_restart_handler);
2925 debugfs_remove(pmc->debugfs);
2927 device_remove_file(&pdev->dev, &dev_attr_reset_reason);
2928 device_remove_file(&pdev->dev, &dev_attr_reset_level);
2929 clk_notifier_unregister(pmc->clk, &pmc->clk_nb);
2934 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
2935 static int tegra_pmc_suspend(struct device *dev)
2937 struct tegra_pmc *pmc = dev_get_drvdata(dev);
2939 tegra_pmc_writel(pmc, virt_to_phys(tegra_resume), PMC_SCRATCH41);
2944 static int tegra_pmc_resume(struct device *dev)
2946 struct tegra_pmc *pmc = dev_get_drvdata(dev);
2948 tegra_pmc_writel(pmc, 0x0, PMC_SCRATCH41);
2953 static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume);
2957 static const char * const tegra20_powergates[] = {
2958 [TEGRA_POWERGATE_CPU] = "cpu",
2959 [TEGRA_POWERGATE_3D] = "3d",
2960 [TEGRA_POWERGATE_VENC] = "venc",
2961 [TEGRA_POWERGATE_VDEC] = "vdec",
2962 [TEGRA_POWERGATE_PCIE] = "pcie",
2963 [TEGRA_POWERGATE_L2] = "l2",
2964 [TEGRA_POWERGATE_MPE] = "mpe",
2967 static const struct tegra_pmc_regs tegra20_pmc_regs = {
2970 .dpd_status = 0x1bc,
2972 .dpd2_status = 0x1c4,
2973 .rst_status = 0x1b4,
2974 .rst_source_shift = 0x0,
2975 .rst_source_mask = 0x7,
2976 .rst_level_shift = 0x0,
2977 .rst_level_mask = 0x0,
2980 static void tegra20_pmc_init(struct tegra_pmc *pmc)
2982 u32 value, osc, pmu, off;
2984 /* Always enable CPU power request */
2985 value = tegra_pmc_readl(pmc, PMC_CNTRL);
2986 value |= PMC_CNTRL_CPU_PWRREQ_OE;
2987 tegra_pmc_writel(pmc, value, PMC_CNTRL);
2989 value = tegra_pmc_readl(pmc, PMC_CNTRL);
2991 if (pmc->sysclkreq_high)
2992 value &= ~PMC_CNTRL_SYSCLK_POLARITY;
2994 value |= PMC_CNTRL_SYSCLK_POLARITY;
2996 if (pmc->corereq_high)
2997 value &= ~PMC_CNTRL_PWRREQ_POLARITY;
2999 value |= PMC_CNTRL_PWRREQ_POLARITY;
3001 /* configure the output polarity while the request is tristated */
3002 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3004 /* now enable the request */
3005 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3006 value |= PMC_CNTRL_SYSCLK_OE;
3007 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3009 /* program core timings which are applicable only for suspend state */
3010 if (pmc->suspend_mode != TEGRA_SUSPEND_NONE) {
3011 osc = DIV_ROUND_UP(pmc->core_osc_time * 8192, 1000000);
3012 pmu = DIV_ROUND_UP(pmc->core_pmu_time * 32768, 1000000);
3013 off = DIV_ROUND_UP(pmc->core_off_time * 32768, 1000000);
3014 tegra_pmc_writel(pmc, ((osc << 8) & 0xff00) | (pmu & 0xff),
3015 PMC_COREPWRGOOD_TIMER);
3016 tegra_pmc_writel(pmc, off, PMC_COREPWROFF_TIMER);
3020 static void tegra20_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
3021 struct device_node *np,
3026 value = tegra_pmc_readl(pmc, PMC_CNTRL);
3029 value |= PMC_CNTRL_INTR_POLARITY;
3031 value &= ~PMC_CNTRL_INTR_POLARITY;
3033 tegra_pmc_writel(pmc, value, PMC_CNTRL);
3036 static const struct tegra_pmc_soc tegra20_pmc_soc = {
3037 .num_powergates = ARRAY_SIZE(tegra20_powergates),
3038 .powergates = tegra20_powergates,
3039 .num_cpu_powergates = 0,
3040 .cpu_powergates = NULL,
3041 .has_tsense_reset = false,
3042 .has_gpu_clamps = false,
3043 .needs_mbist_war = false,
3044 .has_impl_33v_pwr = false,
3045 .maybe_tz_only = false,
3050 .regs = &tegra20_pmc_regs,
3051 .init = tegra20_pmc_init,
3052 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3053 .powergate_set = tegra20_powergate_set,
3054 .reset_sources = NULL,
3055 .num_reset_sources = 0,
3056 .reset_levels = NULL,
3057 .num_reset_levels = 0,
3058 .pmc_clks_data = NULL,
3060 .has_blink_output = true,
3061 .has_usb_sleepwalk = false,
3064 static const char * const tegra30_powergates[] = {
3065 [TEGRA_POWERGATE_CPU] = "cpu0",
3066 [TEGRA_POWERGATE_3D] = "3d0",
3067 [TEGRA_POWERGATE_VENC] = "venc",
3068 [TEGRA_POWERGATE_VDEC] = "vdec",
3069 [TEGRA_POWERGATE_PCIE] = "pcie",
3070 [TEGRA_POWERGATE_L2] = "l2",
3071 [TEGRA_POWERGATE_MPE] = "mpe",
3072 [TEGRA_POWERGATE_HEG] = "heg",
3073 [TEGRA_POWERGATE_SATA] = "sata",
3074 [TEGRA_POWERGATE_CPU1] = "cpu1",
3075 [TEGRA_POWERGATE_CPU2] = "cpu2",
3076 [TEGRA_POWERGATE_CPU3] = "cpu3",
3077 [TEGRA_POWERGATE_CELP] = "celp",
3078 [TEGRA_POWERGATE_3D1] = "3d1",
3081 static const u8 tegra30_cpu_powergates[] = {
3082 TEGRA_POWERGATE_CPU,
3083 TEGRA_POWERGATE_CPU1,
3084 TEGRA_POWERGATE_CPU2,
3085 TEGRA_POWERGATE_CPU3,
3088 static const char * const tegra30_reset_sources[] = {
3096 static const struct tegra_pmc_soc tegra30_pmc_soc = {
3097 .num_powergates = ARRAY_SIZE(tegra30_powergates),
3098 .powergates = tegra30_powergates,
3099 .num_cpu_powergates = ARRAY_SIZE(tegra30_cpu_powergates),
3100 .cpu_powergates = tegra30_cpu_powergates,
3101 .has_tsense_reset = true,
3102 .has_gpu_clamps = false,
3103 .needs_mbist_war = false,
3104 .has_impl_33v_pwr = false,
3105 .maybe_tz_only = false,
3110 .regs = &tegra20_pmc_regs,
3111 .init = tegra20_pmc_init,
3112 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3113 .powergate_set = tegra20_powergate_set,
3114 .reset_sources = tegra30_reset_sources,
3115 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3116 .reset_levels = NULL,
3117 .num_reset_levels = 0,
3118 .pmc_clks_data = tegra_pmc_clks_data,
3119 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3120 .has_blink_output = true,
3121 .has_usb_sleepwalk = false,
3124 static const char * const tegra114_powergates[] = {
3125 [TEGRA_POWERGATE_CPU] = "crail",
3126 [TEGRA_POWERGATE_3D] = "3d",
3127 [TEGRA_POWERGATE_VENC] = "venc",
3128 [TEGRA_POWERGATE_VDEC] = "vdec",
3129 [TEGRA_POWERGATE_MPE] = "mpe",
3130 [TEGRA_POWERGATE_HEG] = "heg",
3131 [TEGRA_POWERGATE_CPU1] = "cpu1",
3132 [TEGRA_POWERGATE_CPU2] = "cpu2",
3133 [TEGRA_POWERGATE_CPU3] = "cpu3",
3134 [TEGRA_POWERGATE_CELP] = "celp",
3135 [TEGRA_POWERGATE_CPU0] = "cpu0",
3136 [TEGRA_POWERGATE_C0NC] = "c0nc",
3137 [TEGRA_POWERGATE_C1NC] = "c1nc",
3138 [TEGRA_POWERGATE_DIS] = "dis",
3139 [TEGRA_POWERGATE_DISB] = "disb",
3140 [TEGRA_POWERGATE_XUSBA] = "xusba",
3141 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3142 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3145 static const u8 tegra114_cpu_powergates[] = {
3146 TEGRA_POWERGATE_CPU0,
3147 TEGRA_POWERGATE_CPU1,
3148 TEGRA_POWERGATE_CPU2,
3149 TEGRA_POWERGATE_CPU3,
3152 static const struct tegra_pmc_soc tegra114_pmc_soc = {
3153 .num_powergates = ARRAY_SIZE(tegra114_powergates),
3154 .powergates = tegra114_powergates,
3155 .num_cpu_powergates = ARRAY_SIZE(tegra114_cpu_powergates),
3156 .cpu_powergates = tegra114_cpu_powergates,
3157 .has_tsense_reset = true,
3158 .has_gpu_clamps = false,
3159 .needs_mbist_war = false,
3160 .has_impl_33v_pwr = false,
3161 .maybe_tz_only = false,
3166 .regs = &tegra20_pmc_regs,
3167 .init = tegra20_pmc_init,
3168 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3169 .powergate_set = tegra114_powergate_set,
3170 .reset_sources = tegra30_reset_sources,
3171 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3172 .reset_levels = NULL,
3173 .num_reset_levels = 0,
3174 .pmc_clks_data = tegra_pmc_clks_data,
3175 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3176 .has_blink_output = true,
3177 .has_usb_sleepwalk = false,
3180 static const char * const tegra124_powergates[] = {
3181 [TEGRA_POWERGATE_CPU] = "crail",
3182 [TEGRA_POWERGATE_3D] = "3d",
3183 [TEGRA_POWERGATE_VENC] = "venc",
3184 [TEGRA_POWERGATE_PCIE] = "pcie",
3185 [TEGRA_POWERGATE_VDEC] = "vdec",
3186 [TEGRA_POWERGATE_MPE] = "mpe",
3187 [TEGRA_POWERGATE_HEG] = "heg",
3188 [TEGRA_POWERGATE_SATA] = "sata",
3189 [TEGRA_POWERGATE_CPU1] = "cpu1",
3190 [TEGRA_POWERGATE_CPU2] = "cpu2",
3191 [TEGRA_POWERGATE_CPU3] = "cpu3",
3192 [TEGRA_POWERGATE_CELP] = "celp",
3193 [TEGRA_POWERGATE_CPU0] = "cpu0",
3194 [TEGRA_POWERGATE_C0NC] = "c0nc",
3195 [TEGRA_POWERGATE_C1NC] = "c1nc",
3196 [TEGRA_POWERGATE_SOR] = "sor",
3197 [TEGRA_POWERGATE_DIS] = "dis",
3198 [TEGRA_POWERGATE_DISB] = "disb",
3199 [TEGRA_POWERGATE_XUSBA] = "xusba",
3200 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3201 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3202 [TEGRA_POWERGATE_VIC] = "vic",
3203 [TEGRA_POWERGATE_IRAM] = "iram",
3206 static const u8 tegra124_cpu_powergates[] = {
3207 TEGRA_POWERGATE_CPU0,
3208 TEGRA_POWERGATE_CPU1,
3209 TEGRA_POWERGATE_CPU2,
3210 TEGRA_POWERGATE_CPU3,
3213 #define TEGRA_IO_PAD(_id, _dpd, _voltage, _name) \
3214 ((struct tegra_io_pad_soc) { \
3217 .voltage = (_voltage), \
3221 #define TEGRA_IO_PIN_DESC(_id, _dpd, _voltage, _name) \
3222 ((struct pinctrl_pin_desc) { \
3227 #define TEGRA124_IO_PAD_TABLE(_pad) \
3228 /* .id .dpd .voltage .name */ \
3229 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3230 _pad(TEGRA_IO_PAD_BB, 15, UINT_MAX, "bb"), \
3231 _pad(TEGRA_IO_PAD_CAM, 36, UINT_MAX, "cam"), \
3232 _pad(TEGRA_IO_PAD_COMP, 22, UINT_MAX, "comp"), \
3233 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3234 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csb"), \
3235 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "cse"), \
3236 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3237 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
3238 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
3239 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
3240 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
3241 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3242 _pad(TEGRA_IO_PAD_HV, 38, UINT_MAX, "hv"), \
3243 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
3244 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3245 _pad(TEGRA_IO_PAD_NAND, 13, UINT_MAX, "nand"), \
3246 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
3247 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
3248 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3249 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3250 _pad(TEGRA_IO_PAD_SDMMC1, 33, UINT_MAX, "sdmmc1"), \
3251 _pad(TEGRA_IO_PAD_SDMMC3, 34, UINT_MAX, "sdmmc3"), \
3252 _pad(TEGRA_IO_PAD_SDMMC4, 35, UINT_MAX, "sdmmc4"), \
3253 _pad(TEGRA_IO_PAD_SYS_DDC, 58, UINT_MAX, "sys_ddc"), \
3254 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3255 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3256 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3257 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3258 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb_bias")
3260 static const struct tegra_io_pad_soc tegra124_io_pads[] = {
3261 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PAD)
3264 static const struct pinctrl_pin_desc tegra124_pin_descs[] = {
3265 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3268 static const struct tegra_pmc_soc tegra124_pmc_soc = {
3269 .num_powergates = ARRAY_SIZE(tegra124_powergates),
3270 .powergates = tegra124_powergates,
3271 .num_cpu_powergates = ARRAY_SIZE(tegra124_cpu_powergates),
3272 .cpu_powergates = tegra124_cpu_powergates,
3273 .has_tsense_reset = true,
3274 .has_gpu_clamps = true,
3275 .needs_mbist_war = false,
3276 .has_impl_33v_pwr = false,
3277 .maybe_tz_only = false,
3278 .num_io_pads = ARRAY_SIZE(tegra124_io_pads),
3279 .io_pads = tegra124_io_pads,
3280 .num_pin_descs = ARRAY_SIZE(tegra124_pin_descs),
3281 .pin_descs = tegra124_pin_descs,
3282 .regs = &tegra20_pmc_regs,
3283 .init = tegra20_pmc_init,
3284 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3285 .powergate_set = tegra114_powergate_set,
3286 .reset_sources = tegra30_reset_sources,
3287 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3288 .reset_levels = NULL,
3289 .num_reset_levels = 0,
3290 .pmc_clks_data = tegra_pmc_clks_data,
3291 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3292 .has_blink_output = true,
3293 .has_usb_sleepwalk = true,
3296 static const char * const tegra210_powergates[] = {
3297 [TEGRA_POWERGATE_CPU] = "crail",
3298 [TEGRA_POWERGATE_3D] = "3d",
3299 [TEGRA_POWERGATE_VENC] = "venc",
3300 [TEGRA_POWERGATE_PCIE] = "pcie",
3301 [TEGRA_POWERGATE_MPE] = "mpe",
3302 [TEGRA_POWERGATE_SATA] = "sata",
3303 [TEGRA_POWERGATE_CPU1] = "cpu1",
3304 [TEGRA_POWERGATE_CPU2] = "cpu2",
3305 [TEGRA_POWERGATE_CPU3] = "cpu3",
3306 [TEGRA_POWERGATE_CPU0] = "cpu0",
3307 [TEGRA_POWERGATE_C0NC] = "c0nc",
3308 [TEGRA_POWERGATE_SOR] = "sor",
3309 [TEGRA_POWERGATE_DIS] = "dis",
3310 [TEGRA_POWERGATE_DISB] = "disb",
3311 [TEGRA_POWERGATE_XUSBA] = "xusba",
3312 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3313 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3314 [TEGRA_POWERGATE_VIC] = "vic",
3315 [TEGRA_POWERGATE_IRAM] = "iram",
3316 [TEGRA_POWERGATE_NVDEC] = "nvdec",
3317 [TEGRA_POWERGATE_NVJPG] = "nvjpg",
3318 [TEGRA_POWERGATE_AUD] = "aud",
3319 [TEGRA_POWERGATE_DFD] = "dfd",
3320 [TEGRA_POWERGATE_VE2] = "ve2",
3323 static const u8 tegra210_cpu_powergates[] = {
3324 TEGRA_POWERGATE_CPU0,
3325 TEGRA_POWERGATE_CPU1,
3326 TEGRA_POWERGATE_CPU2,
3327 TEGRA_POWERGATE_CPU3,
3330 #define TEGRA210_IO_PAD_TABLE(_pad) \
3331 /* .id .dpd .voltage .name */ \
3332 _pad(TEGRA_IO_PAD_AUDIO, 17, 5, "audio"), \
3333 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 18, "audio-hv"), \
3334 _pad(TEGRA_IO_PAD_CAM, 36, 10, "cam"), \
3335 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3336 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3337 _pad(TEGRA_IO_PAD_CSIC, 42, UINT_MAX, "csic"), \
3338 _pad(TEGRA_IO_PAD_CSID, 43, UINT_MAX, "csid"), \
3339 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "csie"), \
3340 _pad(TEGRA_IO_PAD_CSIF, 45, UINT_MAX, "csif"), \
3341 _pad(TEGRA_IO_PAD_DBG, 25, 19, "dbg"), \
3342 _pad(TEGRA_IO_PAD_DEBUG_NONAO, 26, UINT_MAX, "debug-nonao"), \
3343 _pad(TEGRA_IO_PAD_DMIC, 50, 20, "dmic"), \
3344 _pad(TEGRA_IO_PAD_DP, 51, UINT_MAX, "dp"), \
3345 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3346 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
3347 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
3348 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
3349 _pad(TEGRA_IO_PAD_EMMC, 35, UINT_MAX, "emmc"), \
3350 _pad(TEGRA_IO_PAD_EMMC2, 37, UINT_MAX, "emmc2"), \
3351 _pad(TEGRA_IO_PAD_GPIO, 27, 21, "gpio"), \
3352 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
3353 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3354 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
3355 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3356 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
3357 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
3358 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3359 _pad(TEGRA_IO_PAD_PEX_CNTRL, UINT_MAX, 11, "pex-cntrl"), \
3360 _pad(TEGRA_IO_PAD_SDMMC1, 33, 12, "sdmmc1"), \
3361 _pad(TEGRA_IO_PAD_SDMMC3, 34, 13, "sdmmc3"), \
3362 _pad(TEGRA_IO_PAD_SPI, 46, 22, "spi"), \
3363 _pad(TEGRA_IO_PAD_SPI_HV, 47, 23, "spi-hv"), \
3364 _pad(TEGRA_IO_PAD_UART, 14, 2, "uart"), \
3365 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3366 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3367 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3368 _pad(TEGRA_IO_PAD_USB3, 18, UINT_MAX, "usb3"), \
3369 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias")
3371 static const struct tegra_io_pad_soc tegra210_io_pads[] = {
3372 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PAD)
3375 static const struct pinctrl_pin_desc tegra210_pin_descs[] = {
3376 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3379 static const char * const tegra210_reset_sources[] = {
3388 static const struct tegra_wake_event tegra210_wake_events[] = {
3389 TEGRA_WAKE_IRQ("rtc", 16, 2),
3390 TEGRA_WAKE_IRQ("pmu", 51, 86),
3393 static const struct tegra_pmc_soc tegra210_pmc_soc = {
3394 .num_powergates = ARRAY_SIZE(tegra210_powergates),
3395 .powergates = tegra210_powergates,
3396 .num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates),
3397 .cpu_powergates = tegra210_cpu_powergates,
3398 .has_tsense_reset = true,
3399 .has_gpu_clamps = true,
3400 .needs_mbist_war = true,
3401 .has_impl_33v_pwr = false,
3402 .maybe_tz_only = true,
3403 .num_io_pads = ARRAY_SIZE(tegra210_io_pads),
3404 .io_pads = tegra210_io_pads,
3405 .num_pin_descs = ARRAY_SIZE(tegra210_pin_descs),
3406 .pin_descs = tegra210_pin_descs,
3407 .regs = &tegra20_pmc_regs,
3408 .init = tegra20_pmc_init,
3409 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3410 .powergate_set = tegra114_powergate_set,
3411 .irq_set_wake = tegra210_pmc_irq_set_wake,
3412 .irq_set_type = tegra210_pmc_irq_set_type,
3413 .reset_sources = tegra210_reset_sources,
3414 .num_reset_sources = ARRAY_SIZE(tegra210_reset_sources),
3415 .reset_levels = NULL,
3416 .num_reset_levels = 0,
3417 .num_wake_events = ARRAY_SIZE(tegra210_wake_events),
3418 .wake_events = tegra210_wake_events,
3419 .pmc_clks_data = tegra_pmc_clks_data,
3420 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3421 .has_blink_output = true,
3422 .has_usb_sleepwalk = true,
3425 #define TEGRA186_IO_PAD_TABLE(_pad) \
3426 /* .id .dpd .voltage .name */ \
3427 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3428 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3429 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3430 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3431 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
3432 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
3433 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3434 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
3435 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3436 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3437 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3438 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias"), \
3439 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3440 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3441 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3442 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
3443 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
3444 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
3445 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3446 _pad(TEGRA_IO_PAD_SDMMC2_HV, 34, 5, "sdmmc2-hv"), \
3447 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
3448 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
3449 _pad(TEGRA_IO_PAD_DSIB, 40, UINT_MAX, "dsib"), \
3450 _pad(TEGRA_IO_PAD_DSIC, 41, UINT_MAX, "dsic"), \
3451 _pad(TEGRA_IO_PAD_DSID, 42, UINT_MAX, "dsid"), \
3452 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
3453 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
3454 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
3455 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
3456 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
3457 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
3458 _pad(TEGRA_IO_PAD_DMIC_HV, 52, 2, "dmic-hv"), \
3459 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
3460 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
3461 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
3462 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
3463 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
3464 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
3466 static const struct tegra_io_pad_soc tegra186_io_pads[] = {
3467 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PAD)
3470 static const struct pinctrl_pin_desc tegra186_pin_descs[] = {
3471 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3474 static const struct tegra_pmc_regs tegra186_pmc_regs = {
3479 .dpd2_status = 0x80,
3481 .rst_source_shift = 0x2,
3482 .rst_source_mask = 0x3c,
3483 .rst_level_shift = 0x0,
3484 .rst_level_mask = 0x3,
3487 static void tegra186_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
3488 struct device_node *np,
3491 struct resource regs;
3496 index = of_property_match_string(np, "reg-names", "wake");
3498 dev_err(pmc->dev, "failed to find PMC wake registers\n");
3502 of_address_to_resource(np, index, ®s);
3504 wake = ioremap(regs.start, resource_size(®s));
3506 dev_err(pmc->dev, "failed to map PMC wake registers\n");
3510 value = readl(wake + WAKE_AOWAKE_CTRL);
3513 value |= WAKE_AOWAKE_CTRL_INTR_POLARITY;
3515 value &= ~WAKE_AOWAKE_CTRL_INTR_POLARITY;
3517 writel(value, wake + WAKE_AOWAKE_CTRL);
3522 static const char * const tegra186_reset_sources[] = {
3540 static const char * const tegra186_reset_levels[] = {
3541 "L0", "L1", "L2", "WARM"
3544 static const struct tegra_wake_event tegra186_wake_events[] = {
3545 TEGRA_WAKE_IRQ("pmu", 24, 209),
3546 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA186_AON_GPIO(FF, 0)),
3547 TEGRA_WAKE_IRQ("rtc", 73, 10),
3550 static const struct tegra_pmc_soc tegra186_pmc_soc = {
3551 .num_powergates = 0,
3553 .num_cpu_powergates = 0,
3554 .cpu_powergates = NULL,
3555 .has_tsense_reset = false,
3556 .has_gpu_clamps = false,
3557 .needs_mbist_war = false,
3558 .has_impl_33v_pwr = true,
3559 .maybe_tz_only = false,
3560 .num_io_pads = ARRAY_SIZE(tegra186_io_pads),
3561 .io_pads = tegra186_io_pads,
3562 .num_pin_descs = ARRAY_SIZE(tegra186_pin_descs),
3563 .pin_descs = tegra186_pin_descs,
3564 .regs = &tegra186_pmc_regs,
3566 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3567 .irq_set_wake = tegra186_pmc_irq_set_wake,
3568 .irq_set_type = tegra186_pmc_irq_set_type,
3569 .reset_sources = tegra186_reset_sources,
3570 .num_reset_sources = ARRAY_SIZE(tegra186_reset_sources),
3571 .reset_levels = tegra186_reset_levels,
3572 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3573 .num_wake_events = ARRAY_SIZE(tegra186_wake_events),
3574 .wake_events = tegra186_wake_events,
3575 .pmc_clks_data = NULL,
3577 .has_blink_output = false,
3578 .has_usb_sleepwalk = false,
3581 #define TEGRA194_IO_PAD_TABLE(_pad) \
3582 /* .id .dpd .voltage .name */ \
3583 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3584 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3585 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3586 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
3587 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
3588 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3589 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
3590 _pad(TEGRA_IO_PAD_EQOS, 8, UINT_MAX, "eqos"), \
3591 _pad(TEGRA_IO_PAD_PEX_CLK_2_BIAS, 9, UINT_MAX, "pex-clk-2-bias"), \
3592 _pad(TEGRA_IO_PAD_PEX_CLK_2, 10, UINT_MAX, "pex-clk-2"), \
3593 _pad(TEGRA_IO_PAD_DAP3, 11, UINT_MAX, "dap3"), \
3594 _pad(TEGRA_IO_PAD_DAP5, 12, UINT_MAX, "dap5"), \
3595 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3596 _pad(TEGRA_IO_PAD_PWR_CTL, 15, UINT_MAX, "pwr-ctl"), \
3597 _pad(TEGRA_IO_PAD_SOC_GPIO53, 16, UINT_MAX, "soc-gpio53"), \
3598 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3599 _pad(TEGRA_IO_PAD_GP_PWM2, 18, UINT_MAX, "gp-pwm2"), \
3600 _pad(TEGRA_IO_PAD_GP_PWM3, 19, UINT_MAX, "gp-pwm3"), \
3601 _pad(TEGRA_IO_PAD_SOC_GPIO12, 20, UINT_MAX, "soc-gpio12"), \
3602 _pad(TEGRA_IO_PAD_SOC_GPIO13, 21, UINT_MAX, "soc-gpio13"), \
3603 _pad(TEGRA_IO_PAD_SOC_GPIO10, 22, UINT_MAX, "soc-gpio10"), \
3604 _pad(TEGRA_IO_PAD_UART4, 23, UINT_MAX, "uart4"), \
3605 _pad(TEGRA_IO_PAD_UART5, 24, UINT_MAX, "uart5"), \
3606 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
3607 _pad(TEGRA_IO_PAD_HDMI_DP3, 26, UINT_MAX, "hdmi-dp3"), \
3608 _pad(TEGRA_IO_PAD_HDMI_DP2, 27, UINT_MAX, "hdmi-dp2"), \
3609 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
3610 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
3611 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3612 _pad(TEGRA_IO_PAD_PEX_CTL2, 33, UINT_MAX, "pex-ctl2"), \
3613 _pad(TEGRA_IO_PAD_PEX_L0_RST_N, 34, UINT_MAX, "pex-l0-rst"), \
3614 _pad(TEGRA_IO_PAD_PEX_L1_RST_N, 35, UINT_MAX, "pex-l1-rst"), \
3615 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
3616 _pad(TEGRA_IO_PAD_PEX_L5_RST_N, 37, UINT_MAX, "pex-l5-rst"), \
3617 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
3618 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
3619 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
3620 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
3621 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
3622 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
3623 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
3624 _pad(TEGRA_IO_PAD_CSIG, 50, UINT_MAX, "csig"), \
3625 _pad(TEGRA_IO_PAD_CSIH, 51, UINT_MAX, "csih"), \
3626 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
3627 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
3628 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
3629 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
3630 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
3631 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
3633 static const struct tegra_io_pad_soc tegra194_io_pads[] = {
3634 TEGRA194_IO_PAD_TABLE(TEGRA_IO_PAD)
3637 static const struct pinctrl_pin_desc tegra194_pin_descs[] = {
3638 TEGRA194_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3641 static const struct tegra_pmc_regs tegra194_pmc_regs = {
3646 .dpd2_status = 0x80,
3648 .rst_source_shift = 0x2,
3649 .rst_source_mask = 0x7c,
3650 .rst_level_shift = 0x0,
3651 .rst_level_mask = 0x3,
3654 static const char * const tegra194_reset_sources[] = {
3678 static const struct tegra_wake_event tegra194_wake_events[] = {
3679 TEGRA_WAKE_IRQ("pmu", 24, 209),
3680 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA194_AON_GPIO(EE, 4)),
3681 TEGRA_WAKE_IRQ("rtc", 73, 10),
3684 static const struct tegra_pmc_soc tegra194_pmc_soc = {
3685 .num_powergates = 0,
3687 .num_cpu_powergates = 0,
3688 .cpu_powergates = NULL,
3689 .has_tsense_reset = false,
3690 .has_gpu_clamps = false,
3691 .needs_mbist_war = false,
3692 .has_impl_33v_pwr = true,
3693 .maybe_tz_only = false,
3694 .num_io_pads = ARRAY_SIZE(tegra194_io_pads),
3695 .io_pads = tegra194_io_pads,
3696 .num_pin_descs = ARRAY_SIZE(tegra194_pin_descs),
3697 .pin_descs = tegra194_pin_descs,
3698 .regs = &tegra194_pmc_regs,
3700 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3701 .irq_set_wake = tegra186_pmc_irq_set_wake,
3702 .irq_set_type = tegra186_pmc_irq_set_type,
3703 .reset_sources = tegra194_reset_sources,
3704 .num_reset_sources = ARRAY_SIZE(tegra194_reset_sources),
3705 .reset_levels = tegra186_reset_levels,
3706 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3707 .num_wake_events = ARRAY_SIZE(tegra194_wake_events),
3708 .wake_events = tegra194_wake_events,
3709 .pmc_clks_data = NULL,
3711 .has_blink_output = false,
3712 .has_usb_sleepwalk = false,
3715 static const struct tegra_pmc_regs tegra234_pmc_regs = {
3722 .rst_source_shift = 0x2,
3723 .rst_source_mask = 0xfc,
3724 .rst_level_shift = 0x0,
3725 .rst_level_mask = 0x3,
3728 static const char * const tegra234_reset_sources[] = {
3752 static const struct tegra_pmc_soc tegra234_pmc_soc = {
3753 .num_powergates = 0,
3755 .num_cpu_powergates = 0,
3756 .cpu_powergates = NULL,
3757 .has_tsense_reset = false,
3758 .has_gpu_clamps = false,
3759 .needs_mbist_war = false,
3760 .has_impl_33v_pwr = true,
3761 .maybe_tz_only = false,
3766 .regs = &tegra234_pmc_regs,
3768 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3769 .irq_set_wake = tegra186_pmc_irq_set_wake,
3770 .irq_set_type = tegra186_pmc_irq_set_type,
3771 .reset_sources = tegra234_reset_sources,
3772 .num_reset_sources = ARRAY_SIZE(tegra234_reset_sources),
3773 .reset_levels = tegra186_reset_levels,
3774 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3775 .num_wake_events = 0,
3776 .wake_events = NULL,
3777 .pmc_clks_data = NULL,
3779 .has_blink_output = false,
3782 static const struct of_device_id tegra_pmc_match[] = {
3783 { .compatible = "nvidia,tegra234-pmc", .data = &tegra234_pmc_soc },
3784 { .compatible = "nvidia,tegra194-pmc", .data = &tegra194_pmc_soc },
3785 { .compatible = "nvidia,tegra186-pmc", .data = &tegra186_pmc_soc },
3786 { .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc },
3787 { .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc },
3788 { .compatible = "nvidia,tegra124-pmc", .data = &tegra124_pmc_soc },
3789 { .compatible = "nvidia,tegra114-pmc", .data = &tegra114_pmc_soc },
3790 { .compatible = "nvidia,tegra30-pmc", .data = &tegra30_pmc_soc },
3791 { .compatible = "nvidia,tegra20-pmc", .data = &tegra20_pmc_soc },
3795 static void tegra_pmc_sync_state(struct device *dev)
3800 * Older device-trees don't have core PD, and thus, there are
3801 * no dependencies that will block the state syncing. We shouldn't
3802 * mark the domain as synced in this case.
3804 if (!pmc->core_domain_registered)
3807 pmc->core_domain_state_synced = true;
3809 /* this is a no-op if core regulator isn't used */
3810 mutex_lock(&pmc->powergates_lock);
3811 err = dev_pm_opp_sync_regulators(dev);
3812 mutex_unlock(&pmc->powergates_lock);
3815 dev_err(dev, "failed to sync regulators: %d\n", err);
3818 static struct platform_driver tegra_pmc_driver = {
3820 .name = "tegra-pmc",
3821 .suppress_bind_attrs = true,
3822 .of_match_table = tegra_pmc_match,
3823 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
3824 .pm = &tegra_pmc_pm_ops,
3826 .sync_state = tegra_pmc_sync_state,
3828 .probe = tegra_pmc_probe,
3830 builtin_platform_driver(tegra_pmc_driver);
3832 static bool __init tegra_pmc_detect_tz_only(struct tegra_pmc *pmc)
3836 saved = readl(pmc->base + pmc->soc->regs->scratch0);
3837 value = saved ^ 0xffffffff;
3839 if (value == 0xffffffff)
3842 /* write pattern and read it back */
3843 writel(value, pmc->base + pmc->soc->regs->scratch0);
3844 value = readl(pmc->base + pmc->soc->regs->scratch0);
3846 /* if we read all-zeroes, access is restricted to TZ only */
3848 pr_info("access to PMC is restricted to TZ\n");
3852 /* restore original value */
3853 writel(saved, pmc->base + pmc->soc->regs->scratch0);
3859 * Early initialization to allow access to registers in the very early boot
3862 static int __init tegra_pmc_early_init(void)
3864 const struct of_device_id *match;
3865 struct device_node *np;
3866 struct resource regs;
3870 mutex_init(&pmc->powergates_lock);
3872 np = of_find_matching_node_and_match(NULL, tegra_pmc_match, &match);
3875 * Fall back to legacy initialization for 32-bit ARM only. All
3876 * 64-bit ARM device tree files for Tegra are required to have
3879 * This is for backwards-compatibility with old device trees
3880 * that didn't contain a PMC node. Note that in this case the
3881 * SoC data can't be matched and therefore powergating is
3884 if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) {
3885 pr_warn("DT node not found, powergating disabled\n");
3887 regs.start = 0x7000e400;
3888 regs.end = 0x7000e7ff;
3889 regs.flags = IORESOURCE_MEM;
3891 pr_warn("Using memory region %pR\n", ®s);
3894 * At this point we're not running on Tegra, so play
3895 * nice with multi-platform kernels.
3901 * Extract information from the device tree if we've found a
3904 if (of_address_to_resource(np, 0, ®s) < 0) {
3905 pr_err("failed to get PMC registers\n");
3911 pmc->base = ioremap(regs.start, resource_size(®s));
3913 pr_err("failed to map PMC registers\n");
3919 pmc->soc = match->data;
3921 if (pmc->soc->maybe_tz_only)
3922 pmc->tz_only = tegra_pmc_detect_tz_only(pmc);
3924 /* Create a bitmap of the available and valid partitions */
3925 for (i = 0; i < pmc->soc->num_powergates; i++)
3926 if (pmc->soc->powergates[i])
3927 set_bit(i, pmc->powergates_available);
3930 * Invert the interrupt polarity if a PMC device tree node
3931 * exists and contains the nvidia,invert-interrupt property.
3933 invert = of_property_read_bool(np, "nvidia,invert-interrupt");
3935 pmc->soc->setup_irq_polarity(pmc, np, invert);
3942 early_initcall(tegra_pmc_early_init);