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/reboot.h>
42 #include <linux/regmap.h>
43 #include <linux/reset.h>
44 #include <linux/seq_file.h>
45 #include <linux/slab.h>
46 #include <linux/spinlock.h>
48 #include <soc/tegra/common.h>
49 #include <soc/tegra/fuse.h>
50 #include <soc/tegra/pmc.h>
52 #include <dt-bindings/interrupt-controller/arm-gic.h>
53 #include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h>
54 #include <dt-bindings/gpio/tegra186-gpio.h>
55 #include <dt-bindings/gpio/tegra194-gpio.h>
56 #include <dt-bindings/soc/tegra-pmc.h>
59 #define PMC_CNTRL_INTR_POLARITY BIT(17) /* inverts INTR polarity */
60 #define PMC_CNTRL_CPU_PWRREQ_OE BIT(16) /* CPU pwr req enable */
61 #define PMC_CNTRL_CPU_PWRREQ_POLARITY BIT(15) /* CPU pwr req polarity */
62 #define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */
63 #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */
64 #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */
65 #define PMC_CNTRL_PWRREQ_POLARITY BIT(8)
66 #define PMC_CNTRL_BLINK_EN 7
67 #define PMC_CNTRL_MAIN_RST BIT(4)
69 #define PMC_WAKE_MASK 0x0c
70 #define PMC_WAKE_LEVEL 0x10
71 #define PMC_WAKE_STATUS 0x14
72 #define PMC_SW_WAKE_STATUS 0x18
73 #define PMC_DPD_PADS_ORIDE 0x1c
74 #define PMC_DPD_PADS_ORIDE_BLINK 20
76 #define DPD_SAMPLE 0x020
77 #define DPD_SAMPLE_ENABLE BIT(0)
78 #define DPD_SAMPLE_DISABLE (0 << 0)
80 #define PWRGATE_TOGGLE 0x30
81 #define PWRGATE_TOGGLE_START BIT(8)
83 #define REMOVE_CLAMPING 0x34
85 #define PWRGATE_STATUS 0x38
87 #define PMC_BLINK_TIMER 0x40
88 #define PMC_IMPL_E_33V_PWR 0x40
90 #define PMC_PWR_DET 0x48
92 #define PMC_SCRATCH0_MODE_RECOVERY BIT(31)
93 #define PMC_SCRATCH0_MODE_BOOTLOADER BIT(30)
94 #define PMC_SCRATCH0_MODE_RCM BIT(1)
95 #define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
96 PMC_SCRATCH0_MODE_BOOTLOADER | \
97 PMC_SCRATCH0_MODE_RCM)
99 #define PMC_CPUPWRGOOD_TIMER 0xc8
100 #define PMC_CPUPWROFF_TIMER 0xcc
101 #define PMC_COREPWRGOOD_TIMER 0x3c
102 #define PMC_COREPWROFF_TIMER 0xe0
104 #define PMC_PWR_DET_VALUE 0xe4
106 #define PMC_USB_DEBOUNCE_DEL 0xec
107 #define PMC_USB_AO 0xf0
109 #define PMC_SCRATCH41 0x140
111 #define PMC_WAKE2_MASK 0x160
112 #define PMC_WAKE2_LEVEL 0x164
113 #define PMC_WAKE2_STATUS 0x168
114 #define PMC_SW_WAKE2_STATUS 0x16c
116 #define PMC_CLK_OUT_CNTRL 0x1a8
117 #define PMC_CLK_OUT_MUX_MASK GENMASK(1, 0)
118 #define PMC_SENSOR_CTRL 0x1b0
119 #define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2)
120 #define PMC_SENSOR_CTRL_ENABLE_RST BIT(1)
122 #define PMC_RST_STATUS_POR 0
123 #define PMC_RST_STATUS_WATCHDOG 1
124 #define PMC_RST_STATUS_SENSOR 2
125 #define PMC_RST_STATUS_SW_MAIN 3
126 #define PMC_RST_STATUS_LP0 4
127 #define PMC_RST_STATUS_AOTAG 5
129 #define IO_DPD_REQ 0x1b8
130 #define IO_DPD_REQ_CODE_IDLE (0U << 30)
131 #define IO_DPD_REQ_CODE_OFF (1U << 30)
132 #define IO_DPD_REQ_CODE_ON (2U << 30)
133 #define IO_DPD_REQ_CODE_MASK (3U << 30)
135 #define IO_DPD_STATUS 0x1bc
136 #define IO_DPD2_REQ 0x1c0
137 #define IO_DPD2_STATUS 0x1c4
138 #define SEL_DPD_TIM 0x1c8
140 #define PMC_UTMIP_UHSIC_TRIGGERS 0x1ec
141 #define PMC_UTMIP_UHSIC_SAVED_STATE 0x1f0
143 #define PMC_UTMIP_TERM_PAD_CFG 0x1f8
144 #define PMC_UTMIP_UHSIC_SLEEP_CFG 0x1fc
145 #define PMC_UTMIP_UHSIC_FAKE 0x218
147 #define PMC_SCRATCH54 0x258
148 #define PMC_SCRATCH54_DATA_SHIFT 8
149 #define PMC_SCRATCH54_ADDR_SHIFT 0
151 #define PMC_SCRATCH55 0x25c
152 #define PMC_SCRATCH55_RESET_TEGRA BIT(31)
153 #define PMC_SCRATCH55_CNTRL_ID_SHIFT 27
154 #define PMC_SCRATCH55_PINMUX_SHIFT 24
155 #define PMC_SCRATCH55_16BITOP BIT(15)
156 #define PMC_SCRATCH55_CHECKSUM_SHIFT 16
157 #define PMC_SCRATCH55_I2CSLV1_SHIFT 0
159 #define PMC_UTMIP_UHSIC_LINE_WAKEUP 0x26c
161 #define PMC_UTMIP_BIAS_MASTER_CNTRL 0x270
162 #define PMC_UTMIP_MASTER_CONFIG 0x274
163 #define PMC_UTMIP_UHSIC2_TRIGGERS 0x27c
164 #define PMC_UTMIP_MASTER2_CONFIG 0x29c
166 #define GPU_RG_CNTRL 0x2d4
168 #define PMC_UTMIP_PAD_CFG0 0x4c0
169 #define PMC_UTMIP_UHSIC_SLEEP_CFG1 0x4d0
170 #define PMC_UTMIP_SLEEPWALK_P3 0x4e0
171 /* Tegra186 and later */
172 #define WAKE_AOWAKE_CNTRL(x) (0x000 + ((x) << 2))
173 #define WAKE_AOWAKE_CNTRL_LEVEL (1 << 3)
174 #define WAKE_AOWAKE_MASK_W(x) (0x180 + ((x) << 2))
175 #define WAKE_AOWAKE_MASK_R(x) (0x300 + ((x) << 2))
176 #define WAKE_AOWAKE_STATUS_W(x) (0x30c + ((x) << 2))
177 #define WAKE_AOWAKE_STATUS_R(x) (0x48c + ((x) << 2))
178 #define WAKE_AOWAKE_TIER0_ROUTING(x) (0x4b4 + ((x) << 2))
179 #define WAKE_AOWAKE_TIER1_ROUTING(x) (0x4c0 + ((x) << 2))
180 #define WAKE_AOWAKE_TIER2_ROUTING(x) (0x4cc + ((x) << 2))
182 #define WAKE_AOWAKE_CTRL 0x4f4
183 #define WAKE_AOWAKE_CTRL_INTR_POLARITY BIT(0)
186 #define TEGRA_SMC_PMC 0xc2fffe00
187 #define TEGRA_SMC_PMC_READ 0xaa
188 #define TEGRA_SMC_PMC_WRITE 0xbb
197 #define to_pmc_clk(_hw) container_of(_hw, struct pmc_clk, hw)
199 struct pmc_clk_gate {
205 #define to_pmc_clk_gate(_hw) container_of(_hw, struct pmc_clk_gate, hw)
207 struct pmc_clk_init_data {
209 const char *const *parents;
216 static const char * const clk_out1_parents[] = { "osc", "osc_div2",
217 "osc_div4", "extern1",
220 static const char * const clk_out2_parents[] = { "osc", "osc_div2",
221 "osc_div4", "extern2",
224 static const char * const clk_out3_parents[] = { "osc", "osc_div2",
225 "osc_div4", "extern3",
228 static const struct pmc_clk_init_data tegra_pmc_clks_data[] = {
230 .name = "pmc_clk_out_1",
231 .parents = clk_out1_parents,
232 .num_parents = ARRAY_SIZE(clk_out1_parents),
233 .clk_id = TEGRA_PMC_CLK_OUT_1,
238 .name = "pmc_clk_out_2",
239 .parents = clk_out2_parents,
240 .num_parents = ARRAY_SIZE(clk_out2_parents),
241 .clk_id = TEGRA_PMC_CLK_OUT_2,
243 .force_en_shift = 10,
246 .name = "pmc_clk_out_3",
247 .parents = clk_out3_parents,
248 .num_parents = ARRAY_SIZE(clk_out3_parents),
249 .clk_id = TEGRA_PMC_CLK_OUT_3,
251 .force_en_shift = 18,
255 struct tegra_powergate {
256 struct generic_pm_domain genpd;
257 struct tegra_pmc *pmc;
260 unsigned int num_clks;
261 struct reset_control *reset;
264 struct tegra_io_pad_soc {
265 enum tegra_io_pad id;
267 unsigned int voltage;
271 struct tegra_pmc_regs {
272 unsigned int scratch0;
273 unsigned int dpd_req;
274 unsigned int dpd_status;
275 unsigned int dpd2_req;
276 unsigned int dpd2_status;
277 unsigned int rst_status;
278 unsigned int rst_source_shift;
279 unsigned int rst_source_mask;
280 unsigned int rst_level_shift;
281 unsigned int rst_level_mask;
284 struct tegra_wake_event {
289 unsigned int instance;
294 #define TEGRA_WAKE_IRQ(_name, _id, _irq) \
300 .instance = UINT_MAX, \
305 #define TEGRA_WAKE_GPIO(_name, _id, _instance, _pin) \
311 .instance = _instance, \
316 struct tegra_pmc_soc {
317 unsigned int num_powergates;
318 const char *const *powergates;
319 unsigned int num_cpu_powergates;
320 const u8 *cpu_powergates;
322 bool has_tsense_reset;
324 bool needs_mbist_war;
325 bool has_impl_33v_pwr;
328 const struct tegra_io_pad_soc *io_pads;
329 unsigned int num_io_pads;
331 const struct pinctrl_pin_desc *pin_descs;
332 unsigned int num_pin_descs;
334 const struct tegra_pmc_regs *regs;
335 void (*init)(struct tegra_pmc *pmc);
336 void (*setup_irq_polarity)(struct tegra_pmc *pmc,
337 struct device_node *np,
339 int (*irq_set_wake)(struct irq_data *data, unsigned int on);
340 int (*irq_set_type)(struct irq_data *data, unsigned int type);
341 int (*powergate_set)(struct tegra_pmc *pmc, unsigned int id,
344 const char * const *reset_sources;
345 unsigned int num_reset_sources;
346 const char * const *reset_levels;
347 unsigned int num_reset_levels;
350 * These describe events that can wake the system from sleep (i.e.
351 * LP0 or SC7). Wakeup from other sleep states (such as LP1 or LP2)
352 * are dealt with in the LIC.
354 const struct tegra_wake_event *wake_events;
355 unsigned int num_wake_events;
357 const struct pmc_clk_init_data *pmc_clks_data;
358 unsigned int num_pmc_clks;
359 bool has_blink_output;
360 bool has_usb_sleepwalk;
364 * struct tegra_pmc - NVIDIA Tegra PMC
365 * @dev: pointer to PMC device structure
366 * @base: pointer to I/O remapped register region
367 * @wake: pointer to I/O remapped region for WAKE registers
368 * @aotag: pointer to I/O remapped region for AOTAG registers
369 * @scratch: pointer to I/O remapped region for scratch registers
370 * @clk: pointer to pclk clock
371 * @soc: pointer to SoC data structure
372 * @tz_only: flag specifying if the PMC can only be accessed via TrustZone
373 * @debugfs: pointer to debugfs entry
374 * @rate: currently configured rate of pclk
375 * @suspend_mode: lowest suspend mode available
376 * @cpu_good_time: CPU power good time (in microseconds)
377 * @cpu_off_time: CPU power off time (in microsecends)
378 * @core_osc_time: core power good OSC time (in microseconds)
379 * @core_pmu_time: core power good PMU time (in microseconds)
380 * @core_off_time: core power off time (in microseconds)
381 * @corereq_high: core power request is active-high
382 * @sysclkreq_high: system clock request is active-high
383 * @combined_req: combined power request for CPU & core
384 * @cpu_pwr_good_en: CPU power good signal is enabled
385 * @lp0_vec_phys: physical base address of the LP0 warm boot code
386 * @lp0_vec_size: size of the LP0 warm boot code
387 * @powergates_available: Bitmap of available power gates
388 * @powergates_lock: mutex for power gate register access
389 * @pctl_dev: pin controller exposed by the PMC
390 * @domain: IRQ domain provided by the PMC
391 * @irq: chip implementation for the IRQ domain
392 * @clk_nb: pclk clock changes handler
399 void __iomem *scratch;
401 struct dentry *debugfs;
403 const struct tegra_pmc_soc *soc;
408 enum tegra_suspend_mode suspend_mode;
417 bool cpu_pwr_good_en;
420 DECLARE_BITMAP(powergates_available, TEGRA_POWERGATE_MAX);
422 struct mutex powergates_lock;
424 struct pinctrl_dev *pctl_dev;
426 struct irq_domain *domain;
429 struct notifier_block clk_nb;
432 static struct tegra_pmc *pmc = &(struct tegra_pmc) {
434 .suspend_mode = TEGRA_SUSPEND_NONE,
437 static inline struct tegra_powergate *
438 to_powergate(struct generic_pm_domain *domain)
440 return container_of(domain, struct tegra_powergate, genpd);
443 static u32 tegra_pmc_readl(struct tegra_pmc *pmc, unsigned long offset)
445 struct arm_smccc_res res;
448 arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_READ, offset, 0, 0,
452 dev_warn(pmc->dev, "%s(): SMC failed: %lu\n",
455 pr_warn("%s(): SMC failed: %lu\n", __func__,
462 return readl(pmc->base + offset);
465 static void tegra_pmc_writel(struct tegra_pmc *pmc, u32 value,
466 unsigned long offset)
468 struct arm_smccc_res res;
471 arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_WRITE, offset,
472 value, 0, 0, 0, 0, &res);
475 dev_warn(pmc->dev, "%s(): SMC failed: %lu\n",
478 pr_warn("%s(): SMC failed: %lu\n", __func__,
482 writel(value, pmc->base + offset);
486 static u32 tegra_pmc_scratch_readl(struct tegra_pmc *pmc, unsigned long offset)
489 return tegra_pmc_readl(pmc, offset);
491 return readl(pmc->scratch + offset);
494 static void tegra_pmc_scratch_writel(struct tegra_pmc *pmc, u32 value,
495 unsigned long offset)
498 tegra_pmc_writel(pmc, value, offset);
500 writel(value, pmc->scratch + offset);
504 * TODO Figure out a way to call this with the struct tegra_pmc * passed in.
505 * This currently doesn't work because readx_poll_timeout() can only operate
506 * on functions that take a single argument.
508 static inline bool tegra_powergate_state(int id)
510 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
511 return (tegra_pmc_readl(pmc, GPU_RG_CNTRL) & 0x1) == 0;
513 return (tegra_pmc_readl(pmc, PWRGATE_STATUS) & BIT(id)) != 0;
516 static inline bool tegra_powergate_is_valid(struct tegra_pmc *pmc, int id)
518 return (pmc->soc && pmc->soc->powergates[id]);
521 static inline bool tegra_powergate_is_available(struct tegra_pmc *pmc, int id)
523 return test_bit(id, pmc->powergates_available);
526 static int tegra_powergate_lookup(struct tegra_pmc *pmc, const char *name)
530 if (!pmc || !pmc->soc || !name)
533 for (i = 0; i < pmc->soc->num_powergates; i++) {
534 if (!tegra_powergate_is_valid(pmc, i))
537 if (!strcmp(name, pmc->soc->powergates[i]))
544 static int tegra20_powergate_set(struct tegra_pmc *pmc, unsigned int id,
547 unsigned int retries = 100;
552 * As per TRM documentation, the toggle command will be dropped by PMC
553 * if there is contention with a HW-initiated toggling (i.e. CPU core
554 * power-gated), the command should be retried in that case.
557 tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
559 /* wait for PMC to execute the command */
560 ret = readx_poll_timeout(tegra_powergate_state, id, status,
561 status == new_state, 1, 10);
562 } while (ret == -ETIMEDOUT && retries--);
567 static inline bool tegra_powergate_toggle_ready(struct tegra_pmc *pmc)
569 return !(tegra_pmc_readl(pmc, PWRGATE_TOGGLE) & PWRGATE_TOGGLE_START);
572 static int tegra114_powergate_set(struct tegra_pmc *pmc, unsigned int id,
578 /* wait while PMC power gating is contended */
579 err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status,
580 status == true, 1, 100);
584 tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
586 /* wait for PMC to accept the command */
587 err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status,
588 status == true, 1, 100);
592 /* wait for PMC to execute the command */
593 err = readx_poll_timeout(tegra_powergate_state, id, status,
594 status == new_state, 10, 100000);
602 * tegra_powergate_set() - set the state of a partition
603 * @pmc: power management controller
605 * @new_state: new state of the partition
607 static int tegra_powergate_set(struct tegra_pmc *pmc, unsigned int id,
612 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
615 mutex_lock(&pmc->powergates_lock);
617 if (tegra_powergate_state(id) == new_state) {
618 mutex_unlock(&pmc->powergates_lock);
622 err = pmc->soc->powergate_set(pmc, id, new_state);
624 mutex_unlock(&pmc->powergates_lock);
629 static int __tegra_powergate_remove_clamping(struct tegra_pmc *pmc,
634 mutex_lock(&pmc->powergates_lock);
637 * On Tegra124 and later, the clamps for the GPU are controlled by a
638 * separate register (with different semantics).
640 if (id == TEGRA_POWERGATE_3D) {
641 if (pmc->soc->has_gpu_clamps) {
642 tegra_pmc_writel(pmc, 0, GPU_RG_CNTRL);
648 * Tegra 2 has a bug where PCIE and VDE clamping masks are
649 * swapped relatively to the partition ids
651 if (id == TEGRA_POWERGATE_VDEC)
652 mask = (1 << TEGRA_POWERGATE_PCIE);
653 else if (id == TEGRA_POWERGATE_PCIE)
654 mask = (1 << TEGRA_POWERGATE_VDEC);
658 tegra_pmc_writel(pmc, mask, REMOVE_CLAMPING);
661 mutex_unlock(&pmc->powergates_lock);
666 static void tegra_powergate_disable_clocks(struct tegra_powergate *pg)
670 for (i = 0; i < pg->num_clks; i++)
671 clk_disable_unprepare(pg->clks[i]);
674 static int tegra_powergate_enable_clocks(struct tegra_powergate *pg)
679 for (i = 0; i < pg->num_clks; i++) {
680 err = clk_prepare_enable(pg->clks[i]);
689 clk_disable_unprepare(pg->clks[i]);
694 int __weak tegra210_clk_handle_mbist_war(unsigned int id)
699 static int tegra_powergate_power_up(struct tegra_powergate *pg,
704 err = reset_control_assert(pg->reset);
708 usleep_range(10, 20);
710 err = tegra_powergate_set(pg->pmc, pg->id, true);
714 usleep_range(10, 20);
716 err = tegra_powergate_enable_clocks(pg);
720 usleep_range(10, 20);
722 err = __tegra_powergate_remove_clamping(pg->pmc, pg->id);
726 usleep_range(10, 20);
728 err = reset_control_deassert(pg->reset);
732 usleep_range(10, 20);
734 if (pg->pmc->soc->needs_mbist_war)
735 err = tegra210_clk_handle_mbist_war(pg->id);
740 tegra_powergate_disable_clocks(pg);
745 tegra_powergate_disable_clocks(pg);
746 usleep_range(10, 20);
749 tegra_powergate_set(pg->pmc, pg->id, false);
754 static int tegra_powergate_power_down(struct tegra_powergate *pg)
758 err = tegra_powergate_enable_clocks(pg);
762 usleep_range(10, 20);
764 err = reset_control_assert(pg->reset);
768 usleep_range(10, 20);
770 tegra_powergate_disable_clocks(pg);
772 usleep_range(10, 20);
774 err = tegra_powergate_set(pg->pmc, pg->id, false);
781 tegra_powergate_enable_clocks(pg);
782 usleep_range(10, 20);
783 reset_control_deassert(pg->reset);
784 usleep_range(10, 20);
787 tegra_powergate_disable_clocks(pg);
792 static int tegra_genpd_power_on(struct generic_pm_domain *domain)
794 struct tegra_powergate *pg = to_powergate(domain);
795 struct device *dev = pg->pmc->dev;
798 err = tegra_powergate_power_up(pg, true);
800 dev_err(dev, "failed to turn on PM domain %s: %d\n",
801 pg->genpd.name, err);
805 reset_control_release(pg->reset);
811 static int tegra_genpd_power_off(struct generic_pm_domain *domain)
813 struct tegra_powergate *pg = to_powergate(domain);
814 struct device *dev = pg->pmc->dev;
817 err = reset_control_acquire(pg->reset);
819 pr_err("failed to acquire resets: %d\n", err);
823 err = tegra_powergate_power_down(pg);
825 dev_err(dev, "failed to turn off PM domain %s: %d\n",
826 pg->genpd.name, err);
827 reset_control_release(pg->reset);
834 * tegra_powergate_power_on() - power on partition
837 int tegra_powergate_power_on(unsigned int id)
839 if (!tegra_powergate_is_available(pmc, id))
842 return tegra_powergate_set(pmc, id, true);
844 EXPORT_SYMBOL(tegra_powergate_power_on);
847 * tegra_powergate_power_off() - power off partition
850 int tegra_powergate_power_off(unsigned int id)
852 if (!tegra_powergate_is_available(pmc, id))
855 return tegra_powergate_set(pmc, id, false);
857 EXPORT_SYMBOL(tegra_powergate_power_off);
860 * tegra_powergate_is_powered() - check if partition is powered
861 * @pmc: power management controller
864 static int tegra_powergate_is_powered(struct tegra_pmc *pmc, unsigned int id)
866 if (!tegra_powergate_is_valid(pmc, id))
869 return tegra_powergate_state(id);
873 * tegra_powergate_remove_clamping() - remove power clamps for partition
876 int tegra_powergate_remove_clamping(unsigned int id)
878 if (!tegra_powergate_is_available(pmc, id))
881 return __tegra_powergate_remove_clamping(pmc, id);
883 EXPORT_SYMBOL(tegra_powergate_remove_clamping);
886 * tegra_powergate_sequence_power_up() - power up partition
888 * @clk: clock for partition
889 * @rst: reset for partition
891 * Must be called with clk disabled, and returns with clk enabled.
893 int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
894 struct reset_control *rst)
896 struct tegra_powergate *pg;
899 if (!tegra_powergate_is_available(pmc, id))
902 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
912 err = tegra_powergate_power_up(pg, false);
914 dev_err(pmc->dev, "failed to turn on partition %d: %d\n", id,
921 EXPORT_SYMBOL(tegra_powergate_sequence_power_up);
924 * tegra_get_cpu_powergate_id() - convert from CPU ID to partition ID
925 * @pmc: power management controller
926 * @cpuid: CPU partition ID
928 * Returns the partition ID corresponding to the CPU partition ID or a
929 * negative error code on failure.
931 static int tegra_get_cpu_powergate_id(struct tegra_pmc *pmc,
934 if (pmc->soc && cpuid < pmc->soc->num_cpu_powergates)
935 return pmc->soc->cpu_powergates[cpuid];
941 * tegra_pmc_cpu_is_powered() - check if CPU partition is powered
942 * @cpuid: CPU partition ID
944 bool tegra_pmc_cpu_is_powered(unsigned int cpuid)
948 id = tegra_get_cpu_powergate_id(pmc, cpuid);
952 return tegra_powergate_is_powered(pmc, id);
956 * tegra_pmc_cpu_power_on() - power on CPU partition
957 * @cpuid: CPU partition ID
959 int tegra_pmc_cpu_power_on(unsigned int cpuid)
963 id = tegra_get_cpu_powergate_id(pmc, cpuid);
967 return tegra_powergate_set(pmc, id, true);
971 * tegra_pmc_cpu_remove_clamping() - remove power clamps for CPU partition
972 * @cpuid: CPU partition ID
974 int tegra_pmc_cpu_remove_clamping(unsigned int cpuid)
978 id = tegra_get_cpu_powergate_id(pmc, cpuid);
982 return tegra_powergate_remove_clamping(id);
985 static int tegra_pmc_restart_notify(struct notifier_block *this,
986 unsigned long action, void *data)
988 const char *cmd = data;
991 value = tegra_pmc_scratch_readl(pmc, pmc->soc->regs->scratch0);
992 value &= ~PMC_SCRATCH0_MODE_MASK;
995 if (strcmp(cmd, "recovery") == 0)
996 value |= PMC_SCRATCH0_MODE_RECOVERY;
998 if (strcmp(cmd, "bootloader") == 0)
999 value |= PMC_SCRATCH0_MODE_BOOTLOADER;
1001 if (strcmp(cmd, "forced-recovery") == 0)
1002 value |= PMC_SCRATCH0_MODE_RCM;
1005 tegra_pmc_scratch_writel(pmc, value, pmc->soc->regs->scratch0);
1007 /* reset everything but PMC_SCRATCH0 and PMC_RST_STATUS */
1008 value = tegra_pmc_readl(pmc, PMC_CNTRL);
1009 value |= PMC_CNTRL_MAIN_RST;
1010 tegra_pmc_writel(pmc, value, PMC_CNTRL);
1015 static struct notifier_block tegra_pmc_restart_handler = {
1016 .notifier_call = tegra_pmc_restart_notify,
1020 static int powergate_show(struct seq_file *s, void *data)
1025 seq_printf(s, " powergate powered\n");
1026 seq_printf(s, "------------------\n");
1028 for (i = 0; i < pmc->soc->num_powergates; i++) {
1029 status = tegra_powergate_is_powered(pmc, i);
1033 seq_printf(s, " %9s %7s\n", pmc->soc->powergates[i],
1034 status ? "yes" : "no");
1040 DEFINE_SHOW_ATTRIBUTE(powergate);
1042 static int tegra_powergate_debugfs_init(void)
1044 pmc->debugfs = debugfs_create_file("powergate", S_IRUGO, NULL, NULL,
1052 static int tegra_powergate_of_get_clks(struct tegra_powergate *pg,
1053 struct device_node *np)
1056 unsigned int i, count;
1059 count = of_clk_get_parent_count(np);
1063 pg->clks = kcalloc(count, sizeof(clk), GFP_KERNEL);
1067 for (i = 0; i < count; i++) {
1068 pg->clks[i] = of_clk_get(np, i);
1069 if (IS_ERR(pg->clks[i])) {
1070 err = PTR_ERR(pg->clks[i]);
1075 pg->num_clks = count;
1081 clk_put(pg->clks[i]);
1088 static int tegra_powergate_of_get_resets(struct tegra_powergate *pg,
1089 struct device_node *np, bool off)
1091 struct device *dev = pg->pmc->dev;
1094 pg->reset = of_reset_control_array_get_exclusive_released(np);
1095 if (IS_ERR(pg->reset)) {
1096 err = PTR_ERR(pg->reset);
1097 dev_err(dev, "failed to get device resets: %d\n", err);
1101 err = reset_control_acquire(pg->reset);
1103 pr_err("failed to acquire resets: %d\n", err);
1108 err = reset_control_assert(pg->reset);
1110 err = reset_control_deassert(pg->reset);
1114 reset_control_release(pg->reset);
1119 reset_control_release(pg->reset);
1120 reset_control_put(pg->reset);
1126 static int tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
1128 struct device *dev = pmc->dev;
1129 struct tegra_powergate *pg;
1133 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
1137 id = tegra_powergate_lookup(pmc, np->name);
1139 dev_err(dev, "powergate lookup failed for %pOFn: %d\n", np, id);
1145 * Clear the bit for this powergate so it cannot be managed
1146 * directly via the legacy APIs for controlling powergates.
1148 clear_bit(id, pmc->powergates_available);
1151 pg->genpd.name = np->name;
1152 pg->genpd.power_off = tegra_genpd_power_off;
1153 pg->genpd.power_on = tegra_genpd_power_on;
1156 off = !tegra_powergate_is_powered(pmc, pg->id);
1158 err = tegra_powergate_of_get_clks(pg, np);
1160 dev_err(dev, "failed to get clocks for %pOFn: %d\n", np, err);
1164 err = tegra_powergate_of_get_resets(pg, np, off);
1166 dev_err(dev, "failed to get resets for %pOFn: %d\n", np, err);
1170 if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) {
1172 WARN_ON(tegra_powergate_power_up(pg, true));
1177 err = pm_genpd_init(&pg->genpd, NULL, off);
1179 dev_err(dev, "failed to initialise PM domain %pOFn: %d\n", np,
1184 err = of_genpd_add_provider_simple(np, &pg->genpd);
1186 dev_err(dev, "failed to add PM domain provider for %pOFn: %d\n",
1191 dev_dbg(dev, "added PM domain %s\n", pg->genpd.name);
1196 pm_genpd_remove(&pg->genpd);
1199 reset_control_put(pg->reset);
1202 while (pg->num_clks--)
1203 clk_put(pg->clks[pg->num_clks]);
1208 set_bit(id, pmc->powergates_available);
1216 static int tegra_powergate_init(struct tegra_pmc *pmc,
1217 struct device_node *parent)
1219 struct device_node *np, *child;
1222 np = of_get_child_by_name(parent, "powergates");
1226 for_each_child_of_node(np, child) {
1227 err = tegra_powergate_add(pmc, child);
1239 static void tegra_powergate_remove(struct generic_pm_domain *genpd)
1241 struct tegra_powergate *pg = to_powergate(genpd);
1243 reset_control_put(pg->reset);
1245 while (pg->num_clks--)
1246 clk_put(pg->clks[pg->num_clks]);
1250 set_bit(pg->id, pmc->powergates_available);
1255 static void tegra_powergate_remove_all(struct device_node *parent)
1257 struct generic_pm_domain *genpd;
1258 struct device_node *np, *child;
1260 np = of_get_child_by_name(parent, "powergates");
1264 for_each_child_of_node(np, child) {
1265 of_genpd_del_provider(child);
1267 genpd = of_genpd_remove_last(child);
1271 tegra_powergate_remove(genpd);
1277 static const struct tegra_io_pad_soc *
1278 tegra_io_pad_find(struct tegra_pmc *pmc, enum tegra_io_pad id)
1282 for (i = 0; i < pmc->soc->num_io_pads; i++)
1283 if (pmc->soc->io_pads[i].id == id)
1284 return &pmc->soc->io_pads[i];
1289 static int tegra_io_pad_get_dpd_register_bit(struct tegra_pmc *pmc,
1290 enum tegra_io_pad id,
1291 unsigned long *request,
1292 unsigned long *status,
1295 const struct tegra_io_pad_soc *pad;
1297 pad = tegra_io_pad_find(pmc, id);
1299 dev_err(pmc->dev, "invalid I/O pad ID %u\n", id);
1303 if (pad->dpd == UINT_MAX)
1306 *mask = BIT(pad->dpd % 32);
1308 if (pad->dpd < 32) {
1309 *status = pmc->soc->regs->dpd_status;
1310 *request = pmc->soc->regs->dpd_req;
1312 *status = pmc->soc->regs->dpd2_status;
1313 *request = pmc->soc->regs->dpd2_req;
1319 static int tegra_io_pad_prepare(struct tegra_pmc *pmc, enum tegra_io_pad id,
1320 unsigned long *request, unsigned long *status,
1323 unsigned long rate, value;
1326 err = tegra_io_pad_get_dpd_register_bit(pmc, id, request, status, mask);
1333 dev_err(pmc->dev, "failed to get clock rate\n");
1337 tegra_pmc_writel(pmc, DPD_SAMPLE_ENABLE, DPD_SAMPLE);
1339 /* must be at least 200 ns, in APB (PCLK) clock cycles */
1340 value = DIV_ROUND_UP(1000000000, rate);
1341 value = DIV_ROUND_UP(200, value);
1342 tegra_pmc_writel(pmc, value, SEL_DPD_TIM);
1348 static int tegra_io_pad_poll(struct tegra_pmc *pmc, unsigned long offset,
1349 u32 mask, u32 val, unsigned long timeout)
1353 timeout = jiffies + msecs_to_jiffies(timeout);
1355 while (time_after(timeout, jiffies)) {
1356 value = tegra_pmc_readl(pmc, offset);
1357 if ((value & mask) == val)
1360 usleep_range(250, 1000);
1366 static void tegra_io_pad_unprepare(struct tegra_pmc *pmc)
1369 tegra_pmc_writel(pmc, DPD_SAMPLE_DISABLE, DPD_SAMPLE);
1373 * tegra_io_pad_power_enable() - enable power to I/O pad
1374 * @id: Tegra I/O pad ID for which to enable power
1376 * Returns: 0 on success or a negative error code on failure.
1378 int tegra_io_pad_power_enable(enum tegra_io_pad id)
1380 unsigned long request, status;
1384 mutex_lock(&pmc->powergates_lock);
1386 err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask);
1388 dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err);
1392 tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_OFF | mask, request);
1394 err = tegra_io_pad_poll(pmc, status, mask, 0, 250);
1396 dev_err(pmc->dev, "failed to enable I/O pad: %d\n", err);
1400 tegra_io_pad_unprepare(pmc);
1403 mutex_unlock(&pmc->powergates_lock);
1406 EXPORT_SYMBOL(tegra_io_pad_power_enable);
1409 * tegra_io_pad_power_disable() - disable power to I/O pad
1410 * @id: Tegra I/O pad ID for which to disable power
1412 * Returns: 0 on success or a negative error code on failure.
1414 int tegra_io_pad_power_disable(enum tegra_io_pad id)
1416 unsigned long request, status;
1420 mutex_lock(&pmc->powergates_lock);
1422 err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask);
1424 dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err);
1428 tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_ON | mask, request);
1430 err = tegra_io_pad_poll(pmc, status, mask, mask, 250);
1432 dev_err(pmc->dev, "failed to disable I/O pad: %d\n", err);
1436 tegra_io_pad_unprepare(pmc);
1439 mutex_unlock(&pmc->powergates_lock);
1442 EXPORT_SYMBOL(tegra_io_pad_power_disable);
1444 static int tegra_io_pad_is_powered(struct tegra_pmc *pmc, enum tegra_io_pad id)
1446 unsigned long request, status;
1450 err = tegra_io_pad_get_dpd_register_bit(pmc, id, &request, &status,
1455 value = tegra_pmc_readl(pmc, status);
1457 return !(value & mask);
1460 static int tegra_io_pad_set_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id,
1463 const struct tegra_io_pad_soc *pad;
1466 pad = tegra_io_pad_find(pmc, id);
1470 if (pad->voltage == UINT_MAX)
1473 mutex_lock(&pmc->powergates_lock);
1475 if (pmc->soc->has_impl_33v_pwr) {
1476 value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR);
1478 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1479 value &= ~BIT(pad->voltage);
1481 value |= BIT(pad->voltage);
1483 tegra_pmc_writel(pmc, value, PMC_IMPL_E_33V_PWR);
1485 /* write-enable PMC_PWR_DET_VALUE[pad->voltage] */
1486 value = tegra_pmc_readl(pmc, PMC_PWR_DET);
1487 value |= BIT(pad->voltage);
1488 tegra_pmc_writel(pmc, value, PMC_PWR_DET);
1490 /* update I/O voltage */
1491 value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE);
1493 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1494 value &= ~BIT(pad->voltage);
1496 value |= BIT(pad->voltage);
1498 tegra_pmc_writel(pmc, value, PMC_PWR_DET_VALUE);
1501 mutex_unlock(&pmc->powergates_lock);
1503 usleep_range(100, 250);
1508 static int tegra_io_pad_get_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id)
1510 const struct tegra_io_pad_soc *pad;
1513 pad = tegra_io_pad_find(pmc, id);
1517 if (pad->voltage == UINT_MAX)
1520 if (pmc->soc->has_impl_33v_pwr)
1521 value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR);
1523 value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE);
1525 if ((value & BIT(pad->voltage)) == 0)
1526 return TEGRA_IO_PAD_VOLTAGE_1V8;
1528 return TEGRA_IO_PAD_VOLTAGE_3V3;
1532 * tegra_io_rail_power_on() - enable power to I/O rail
1533 * @id: Tegra I/O pad ID for which to enable power
1535 * See also: tegra_io_pad_power_enable()
1537 int tegra_io_rail_power_on(unsigned int id)
1539 return tegra_io_pad_power_enable(id);
1541 EXPORT_SYMBOL(tegra_io_rail_power_on);
1544 * tegra_io_rail_power_off() - disable power to I/O rail
1545 * @id: Tegra I/O pad ID for which to disable power
1547 * See also: tegra_io_pad_power_disable()
1549 int tegra_io_rail_power_off(unsigned int id)
1551 return tegra_io_pad_power_disable(id);
1553 EXPORT_SYMBOL(tegra_io_rail_power_off);
1555 #ifdef CONFIG_PM_SLEEP
1556 enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void)
1558 return pmc->suspend_mode;
1561 void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode)
1563 if (mode < TEGRA_SUSPEND_NONE || mode >= TEGRA_MAX_SUSPEND_MODE)
1566 pmc->suspend_mode = mode;
1569 void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode)
1571 unsigned long long rate = 0;
1576 case TEGRA_SUSPEND_LP1:
1580 case TEGRA_SUSPEND_LP2:
1588 if (WARN_ON_ONCE(rate == 0))
1591 ticks = pmc->cpu_good_time * rate + USEC_PER_SEC - 1;
1592 do_div(ticks, USEC_PER_SEC);
1593 tegra_pmc_writel(pmc, ticks, PMC_CPUPWRGOOD_TIMER);
1595 ticks = pmc->cpu_off_time * rate + USEC_PER_SEC - 1;
1596 do_div(ticks, USEC_PER_SEC);
1597 tegra_pmc_writel(pmc, ticks, PMC_CPUPWROFF_TIMER);
1599 value = tegra_pmc_readl(pmc, PMC_CNTRL);
1600 value &= ~PMC_CNTRL_SIDE_EFFECT_LP0;
1601 value |= PMC_CNTRL_CPU_PWRREQ_OE;
1602 tegra_pmc_writel(pmc, value, PMC_CNTRL);
1606 static int tegra_pmc_parse_dt(struct tegra_pmc *pmc, struct device_node *np)
1608 u32 value, values[2];
1610 if (of_property_read_u32(np, "nvidia,suspend-mode", &value)) {
1614 pmc->suspend_mode = TEGRA_SUSPEND_LP0;
1618 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1622 pmc->suspend_mode = TEGRA_SUSPEND_LP2;
1626 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1631 pmc->suspend_mode = tegra_pm_validate_suspend_mode(pmc->suspend_mode);
1633 if (of_property_read_u32(np, "nvidia,cpu-pwr-good-time", &value))
1634 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1636 pmc->cpu_good_time = value;
1638 if (of_property_read_u32(np, "nvidia,cpu-pwr-off-time", &value))
1639 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1641 pmc->cpu_off_time = value;
1643 if (of_property_read_u32_array(np, "nvidia,core-pwr-good-time",
1644 values, ARRAY_SIZE(values)))
1645 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1647 pmc->core_osc_time = values[0];
1648 pmc->core_pmu_time = values[1];
1650 if (of_property_read_u32(np, "nvidia,core-pwr-off-time", &value))
1651 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1653 pmc->core_off_time = value;
1655 pmc->corereq_high = of_property_read_bool(np,
1656 "nvidia,core-power-req-active-high");
1658 pmc->sysclkreq_high = of_property_read_bool(np,
1659 "nvidia,sys-clock-req-active-high");
1661 pmc->combined_req = of_property_read_bool(np,
1662 "nvidia,combined-power-req");
1664 pmc->cpu_pwr_good_en = of_property_read_bool(np,
1665 "nvidia,cpu-pwr-good-en");
1667 if (of_property_read_u32_array(np, "nvidia,lp0-vec", values,
1668 ARRAY_SIZE(values)))
1669 if (pmc->suspend_mode == TEGRA_SUSPEND_LP0)
1670 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1672 pmc->lp0_vec_phys = values[0];
1673 pmc->lp0_vec_size = values[1];
1678 static void tegra_pmc_init(struct tegra_pmc *pmc)
1681 pmc->soc->init(pmc);
1684 static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc)
1686 static const char disabled[] = "emergency thermal reset disabled";
1687 u32 pmu_addr, ctrl_id, reg_addr, reg_data, pinmux;
1688 struct device *dev = pmc->dev;
1689 struct device_node *np;
1690 u32 value, checksum;
1692 if (!pmc->soc->has_tsense_reset)
1695 np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip");
1697 dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled);
1701 if (of_property_read_u32(np, "nvidia,i2c-controller-id", &ctrl_id)) {
1702 dev_err(dev, "I2C controller ID missing, %s.\n", disabled);
1706 if (of_property_read_u32(np, "nvidia,bus-addr", &pmu_addr)) {
1707 dev_err(dev, "nvidia,bus-addr missing, %s.\n", disabled);
1711 if (of_property_read_u32(np, "nvidia,reg-addr", ®_addr)) {
1712 dev_err(dev, "nvidia,reg-addr missing, %s.\n", disabled);
1716 if (of_property_read_u32(np, "nvidia,reg-data", ®_data)) {
1717 dev_err(dev, "nvidia,reg-data missing, %s.\n", disabled);
1721 if (of_property_read_u32(np, "nvidia,pinmux-id", &pinmux))
1724 value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL);
1725 value |= PMC_SENSOR_CTRL_SCRATCH_WRITE;
1726 tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL);
1728 value = (reg_data << PMC_SCRATCH54_DATA_SHIFT) |
1729 (reg_addr << PMC_SCRATCH54_ADDR_SHIFT);
1730 tegra_pmc_writel(pmc, value, PMC_SCRATCH54);
1732 value = PMC_SCRATCH55_RESET_TEGRA;
1733 value |= ctrl_id << PMC_SCRATCH55_CNTRL_ID_SHIFT;
1734 value |= pinmux << PMC_SCRATCH55_PINMUX_SHIFT;
1735 value |= pmu_addr << PMC_SCRATCH55_I2CSLV1_SHIFT;
1738 * Calculate checksum of SCRATCH54, SCRATCH55 fields. Bits 23:16 will
1739 * contain the checksum and are currently zero, so they are not added.
1741 checksum = reg_addr + reg_data + (value & 0xff) + ((value >> 8) & 0xff)
1742 + ((value >> 24) & 0xff);
1744 checksum = 0x100 - checksum;
1746 value |= checksum << PMC_SCRATCH55_CHECKSUM_SHIFT;
1748 tegra_pmc_writel(pmc, value, PMC_SCRATCH55);
1750 value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL);
1751 value |= PMC_SENSOR_CTRL_ENABLE_RST;
1752 tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL);
1754 dev_info(pmc->dev, "emergency thermal reset enabled\n");
1760 static int tegra_io_pad_pinctrl_get_groups_count(struct pinctrl_dev *pctl_dev)
1762 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
1764 return pmc->soc->num_io_pads;
1767 static const char *tegra_io_pad_pinctrl_get_group_name(struct pinctrl_dev *pctl,
1770 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl);
1772 return pmc->soc->io_pads[group].name;
1775 static int tegra_io_pad_pinctrl_get_group_pins(struct pinctrl_dev *pctl_dev,
1777 const unsigned int **pins,
1778 unsigned int *num_pins)
1780 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
1782 *pins = &pmc->soc->io_pads[group].id;
1788 static const struct pinctrl_ops tegra_io_pad_pinctrl_ops = {
1789 .get_groups_count = tegra_io_pad_pinctrl_get_groups_count,
1790 .get_group_name = tegra_io_pad_pinctrl_get_group_name,
1791 .get_group_pins = tegra_io_pad_pinctrl_get_group_pins,
1792 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
1793 .dt_free_map = pinconf_generic_dt_free_map,
1796 static int tegra_io_pad_pinconf_get(struct pinctrl_dev *pctl_dev,
1797 unsigned int pin, unsigned long *config)
1799 enum pin_config_param param = pinconf_to_config_param(*config);
1800 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
1801 const struct tegra_io_pad_soc *pad;
1805 pad = tegra_io_pad_find(pmc, pin);
1810 case PIN_CONFIG_POWER_SOURCE:
1811 ret = tegra_io_pad_get_voltage(pmc, pad->id);
1818 case PIN_CONFIG_LOW_POWER_MODE:
1819 ret = tegra_io_pad_is_powered(pmc, pad->id);
1830 *config = pinconf_to_config_packed(param, arg);
1835 static int tegra_io_pad_pinconf_set(struct pinctrl_dev *pctl_dev,
1836 unsigned int pin, unsigned long *configs,
1837 unsigned int num_configs)
1839 struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev);
1840 const struct tegra_io_pad_soc *pad;
1841 enum pin_config_param param;
1846 pad = tegra_io_pad_find(pmc, pin);
1850 for (i = 0; i < num_configs; ++i) {
1851 param = pinconf_to_config_param(configs[i]);
1852 arg = pinconf_to_config_argument(configs[i]);
1855 case PIN_CONFIG_LOW_POWER_MODE:
1857 err = tegra_io_pad_power_disable(pad->id);
1859 err = tegra_io_pad_power_enable(pad->id);
1863 case PIN_CONFIG_POWER_SOURCE:
1864 if (arg != TEGRA_IO_PAD_VOLTAGE_1V8 &&
1865 arg != TEGRA_IO_PAD_VOLTAGE_3V3)
1867 err = tegra_io_pad_set_voltage(pmc, pad->id, arg);
1879 static const struct pinconf_ops tegra_io_pad_pinconf_ops = {
1880 .pin_config_get = tegra_io_pad_pinconf_get,
1881 .pin_config_set = tegra_io_pad_pinconf_set,
1885 static struct pinctrl_desc tegra_pmc_pctl_desc = {
1886 .pctlops = &tegra_io_pad_pinctrl_ops,
1887 .confops = &tegra_io_pad_pinconf_ops,
1890 static int tegra_pmc_pinctrl_init(struct tegra_pmc *pmc)
1894 if (!pmc->soc->num_pin_descs)
1897 tegra_pmc_pctl_desc.name = dev_name(pmc->dev);
1898 tegra_pmc_pctl_desc.pins = pmc->soc->pin_descs;
1899 tegra_pmc_pctl_desc.npins = pmc->soc->num_pin_descs;
1901 pmc->pctl_dev = devm_pinctrl_register(pmc->dev, &tegra_pmc_pctl_desc,
1903 if (IS_ERR(pmc->pctl_dev)) {
1904 err = PTR_ERR(pmc->pctl_dev);
1905 dev_err(pmc->dev, "failed to register pin controller: %d\n",
1913 static ssize_t reset_reason_show(struct device *dev,
1914 struct device_attribute *attr, char *buf)
1918 value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status);
1919 value &= pmc->soc->regs->rst_source_mask;
1920 value >>= pmc->soc->regs->rst_source_shift;
1922 if (WARN_ON(value >= pmc->soc->num_reset_sources))
1923 return sprintf(buf, "%s\n", "UNKNOWN");
1925 return sprintf(buf, "%s\n", pmc->soc->reset_sources[value]);
1928 static DEVICE_ATTR_RO(reset_reason);
1930 static ssize_t reset_level_show(struct device *dev,
1931 struct device_attribute *attr, char *buf)
1935 value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status);
1936 value &= pmc->soc->regs->rst_level_mask;
1937 value >>= pmc->soc->regs->rst_level_shift;
1939 if (WARN_ON(value >= pmc->soc->num_reset_levels))
1940 return sprintf(buf, "%s\n", "UNKNOWN");
1942 return sprintf(buf, "%s\n", pmc->soc->reset_levels[value]);
1945 static DEVICE_ATTR_RO(reset_level);
1947 static void tegra_pmc_reset_sysfs_init(struct tegra_pmc *pmc)
1949 struct device *dev = pmc->dev;
1952 if (pmc->soc->reset_sources) {
1953 err = device_create_file(dev, &dev_attr_reset_reason);
1956 "failed to create attr \"reset_reason\": %d\n",
1960 if (pmc->soc->reset_levels) {
1961 err = device_create_file(dev, &dev_attr_reset_level);
1964 "failed to create attr \"reset_level\": %d\n",
1969 static int tegra_pmc_irq_translate(struct irq_domain *domain,
1970 struct irq_fwspec *fwspec,
1971 unsigned long *hwirq,
1974 if (WARN_ON(fwspec->param_count < 2))
1977 *hwirq = fwspec->param[0];
1978 *type = fwspec->param[1];
1983 static int tegra_pmc_irq_alloc(struct irq_domain *domain, unsigned int virq,
1984 unsigned int num_irqs, void *data)
1986 struct tegra_pmc *pmc = domain->host_data;
1987 const struct tegra_pmc_soc *soc = pmc->soc;
1988 struct irq_fwspec *fwspec = data;
1992 if (WARN_ON(num_irqs > 1))
1995 for (i = 0; i < soc->num_wake_events; i++) {
1996 const struct tegra_wake_event *event = &soc->wake_events[i];
1998 if (fwspec->param_count == 2) {
1999 struct irq_fwspec spec;
2001 if (event->id != fwspec->param[0])
2004 err = irq_domain_set_hwirq_and_chip(domain, virq,
2010 spec.fwnode = &pmc->dev->of_node->fwnode;
2011 spec.param_count = 3;
2012 spec.param[0] = GIC_SPI;
2013 spec.param[1] = event->irq;
2014 spec.param[2] = fwspec->param[1];
2016 err = irq_domain_alloc_irqs_parent(domain, virq,
2022 if (fwspec->param_count == 3) {
2023 if (event->gpio.instance != fwspec->param[0] ||
2024 event->gpio.pin != fwspec->param[1])
2027 err = irq_domain_set_hwirq_and_chip(domain, virq,
2031 /* GPIO hierarchies stop at the PMC level */
2032 if (!err && domain->parent)
2033 err = irq_domain_disconnect_hierarchy(domain->parent,
2039 /* If there is no wake-up event, there is no PMC mapping */
2040 if (i == soc->num_wake_events)
2041 err = irq_domain_disconnect_hierarchy(domain, virq);
2046 static const struct irq_domain_ops tegra_pmc_irq_domain_ops = {
2047 .translate = tegra_pmc_irq_translate,
2048 .alloc = tegra_pmc_irq_alloc,
2051 static int tegra210_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
2053 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2054 unsigned int offset, bit;
2057 offset = data->hwirq / 32;
2058 bit = data->hwirq % 32;
2060 /* clear wake status */
2061 tegra_pmc_writel(pmc, 0, PMC_SW_WAKE_STATUS);
2062 tegra_pmc_writel(pmc, 0, PMC_SW_WAKE2_STATUS);
2064 tegra_pmc_writel(pmc, 0, PMC_WAKE_STATUS);
2065 tegra_pmc_writel(pmc, 0, PMC_WAKE2_STATUS);
2067 /* enable PMC wake */
2068 if (data->hwirq >= 32)
2069 offset = PMC_WAKE2_MASK;
2071 offset = PMC_WAKE_MASK;
2073 value = tegra_pmc_readl(pmc, offset);
2080 tegra_pmc_writel(pmc, value, offset);
2085 static int tegra210_pmc_irq_set_type(struct irq_data *data, unsigned int type)
2087 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2088 unsigned int offset, bit;
2091 offset = data->hwirq / 32;
2092 bit = data->hwirq % 32;
2094 if (data->hwirq >= 32)
2095 offset = PMC_WAKE2_LEVEL;
2097 offset = PMC_WAKE_LEVEL;
2099 value = tegra_pmc_readl(pmc, offset);
2102 case IRQ_TYPE_EDGE_RISING:
2103 case IRQ_TYPE_LEVEL_HIGH:
2107 case IRQ_TYPE_EDGE_FALLING:
2108 case IRQ_TYPE_LEVEL_LOW:
2112 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
2120 tegra_pmc_writel(pmc, value, offset);
2125 static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
2127 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2128 unsigned int offset, bit;
2131 offset = data->hwirq / 32;
2132 bit = data->hwirq % 32;
2134 /* clear wake status */
2135 writel(0x1, pmc->wake + WAKE_AOWAKE_STATUS_W(data->hwirq));
2137 /* route wake to tier 2 */
2138 value = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
2141 value &= ~(1 << bit);
2145 writel(value, pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
2147 /* enable wakeup event */
2148 writel(!!on, pmc->wake + WAKE_AOWAKE_MASK_W(data->hwirq));
2153 static int tegra186_pmc_irq_set_type(struct irq_data *data, unsigned int type)
2155 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
2158 value = readl(pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
2161 case IRQ_TYPE_EDGE_RISING:
2162 case IRQ_TYPE_LEVEL_HIGH:
2163 value |= WAKE_AOWAKE_CNTRL_LEVEL;
2166 case IRQ_TYPE_EDGE_FALLING:
2167 case IRQ_TYPE_LEVEL_LOW:
2168 value &= ~WAKE_AOWAKE_CNTRL_LEVEL;
2171 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
2172 value ^= WAKE_AOWAKE_CNTRL_LEVEL;
2179 writel(value, pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
2184 static void tegra_irq_mask_parent(struct irq_data *data)
2186 if (data->parent_data)
2187 irq_chip_mask_parent(data);
2190 static void tegra_irq_unmask_parent(struct irq_data *data)
2192 if (data->parent_data)
2193 irq_chip_unmask_parent(data);
2196 static void tegra_irq_eoi_parent(struct irq_data *data)
2198 if (data->parent_data)
2199 irq_chip_eoi_parent(data);
2202 static int tegra_irq_set_affinity_parent(struct irq_data *data,
2203 const struct cpumask *dest,
2206 if (data->parent_data)
2207 return irq_chip_set_affinity_parent(data, dest, force);
2212 static int tegra_pmc_irq_init(struct tegra_pmc *pmc)
2214 struct irq_domain *parent = NULL;
2215 struct device_node *np;
2217 np = of_irq_find_parent(pmc->dev->of_node);
2219 parent = irq_find_host(np);
2226 pmc->irq.name = dev_name(pmc->dev);
2227 pmc->irq.irq_mask = tegra_irq_mask_parent;
2228 pmc->irq.irq_unmask = tegra_irq_unmask_parent;
2229 pmc->irq.irq_eoi = tegra_irq_eoi_parent;
2230 pmc->irq.irq_set_affinity = tegra_irq_set_affinity_parent;
2231 pmc->irq.irq_set_type = pmc->soc->irq_set_type;
2232 pmc->irq.irq_set_wake = pmc->soc->irq_set_wake;
2234 pmc->domain = irq_domain_add_hierarchy(parent, 0, 96, pmc->dev->of_node,
2235 &tegra_pmc_irq_domain_ops, pmc);
2237 dev_err(pmc->dev, "failed to allocate domain\n");
2244 static int tegra_pmc_clk_notify_cb(struct notifier_block *nb,
2245 unsigned long action, void *ptr)
2247 struct tegra_pmc *pmc = container_of(nb, struct tegra_pmc, clk_nb);
2248 struct clk_notifier_data *data = ptr;
2251 case PRE_RATE_CHANGE:
2252 mutex_lock(&pmc->powergates_lock);
2255 case POST_RATE_CHANGE:
2256 pmc->rate = data->new_rate;
2259 case ABORT_RATE_CHANGE:
2260 mutex_unlock(&pmc->powergates_lock);
2265 return notifier_from_errno(-EINVAL);
2271 static void pmc_clk_fence_udelay(u32 offset)
2273 tegra_pmc_readl(pmc, offset);
2274 /* pmc clk propagation delay 2 us */
2278 static u8 pmc_clk_mux_get_parent(struct clk_hw *hw)
2280 struct pmc_clk *clk = to_pmc_clk(hw);
2283 val = tegra_pmc_readl(pmc, clk->offs) >> clk->mux_shift;
2284 val &= PMC_CLK_OUT_MUX_MASK;
2289 static int pmc_clk_mux_set_parent(struct clk_hw *hw, u8 index)
2291 struct pmc_clk *clk = to_pmc_clk(hw);
2294 val = tegra_pmc_readl(pmc, clk->offs);
2295 val &= ~(PMC_CLK_OUT_MUX_MASK << clk->mux_shift);
2296 val |= index << clk->mux_shift;
2297 tegra_pmc_writel(pmc, val, clk->offs);
2298 pmc_clk_fence_udelay(clk->offs);
2303 static int pmc_clk_is_enabled(struct clk_hw *hw)
2305 struct pmc_clk *clk = to_pmc_clk(hw);
2308 val = tegra_pmc_readl(pmc, clk->offs) & BIT(clk->force_en_shift);
2313 static void pmc_clk_set_state(unsigned long offs, u32 shift, int state)
2317 val = tegra_pmc_readl(pmc, offs);
2318 val = state ? (val | BIT(shift)) : (val & ~BIT(shift));
2319 tegra_pmc_writel(pmc, val, offs);
2320 pmc_clk_fence_udelay(offs);
2323 static int pmc_clk_enable(struct clk_hw *hw)
2325 struct pmc_clk *clk = to_pmc_clk(hw);
2327 pmc_clk_set_state(clk->offs, clk->force_en_shift, 1);
2332 static void pmc_clk_disable(struct clk_hw *hw)
2334 struct pmc_clk *clk = to_pmc_clk(hw);
2336 pmc_clk_set_state(clk->offs, clk->force_en_shift, 0);
2339 static const struct clk_ops pmc_clk_ops = {
2340 .get_parent = pmc_clk_mux_get_parent,
2341 .set_parent = pmc_clk_mux_set_parent,
2342 .determine_rate = __clk_mux_determine_rate,
2343 .is_enabled = pmc_clk_is_enabled,
2344 .enable = pmc_clk_enable,
2345 .disable = pmc_clk_disable,
2349 tegra_pmc_clk_out_register(struct tegra_pmc *pmc,
2350 const struct pmc_clk_init_data *data,
2351 unsigned long offset)
2353 struct clk_init_data init;
2354 struct pmc_clk *pmc_clk;
2356 pmc_clk = devm_kzalloc(pmc->dev, sizeof(*pmc_clk), GFP_KERNEL);
2358 return ERR_PTR(-ENOMEM);
2360 init.name = data->name;
2361 init.ops = &pmc_clk_ops;
2362 init.parent_names = data->parents;
2363 init.num_parents = data->num_parents;
2364 init.flags = CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT |
2365 CLK_SET_PARENT_GATE;
2367 pmc_clk->hw.init = &init;
2368 pmc_clk->offs = offset;
2369 pmc_clk->mux_shift = data->mux_shift;
2370 pmc_clk->force_en_shift = data->force_en_shift;
2372 return clk_register(NULL, &pmc_clk->hw);
2375 static int pmc_clk_gate_is_enabled(struct clk_hw *hw)
2377 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2379 return tegra_pmc_readl(pmc, gate->offs) & BIT(gate->shift) ? 1 : 0;
2382 static int pmc_clk_gate_enable(struct clk_hw *hw)
2384 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2386 pmc_clk_set_state(gate->offs, gate->shift, 1);
2391 static void pmc_clk_gate_disable(struct clk_hw *hw)
2393 struct pmc_clk_gate *gate = to_pmc_clk_gate(hw);
2395 pmc_clk_set_state(gate->offs, gate->shift, 0);
2398 static const struct clk_ops pmc_clk_gate_ops = {
2399 .is_enabled = pmc_clk_gate_is_enabled,
2400 .enable = pmc_clk_gate_enable,
2401 .disable = pmc_clk_gate_disable,
2405 tegra_pmc_clk_gate_register(struct tegra_pmc *pmc, const char *name,
2406 const char *parent_name, unsigned long offset,
2409 struct clk_init_data init;
2410 struct pmc_clk_gate *gate;
2412 gate = devm_kzalloc(pmc->dev, sizeof(*gate), GFP_KERNEL);
2414 return ERR_PTR(-ENOMEM);
2417 init.ops = &pmc_clk_gate_ops;
2418 init.parent_names = &parent_name;
2419 init.num_parents = 1;
2422 gate->hw.init = &init;
2423 gate->offs = offset;
2424 gate->shift = shift;
2426 return clk_register(NULL, &gate->hw);
2429 static void tegra_pmc_clock_register(struct tegra_pmc *pmc,
2430 struct device_node *np)
2433 struct clk_onecell_data *clk_data;
2434 unsigned int num_clks;
2437 num_clks = pmc->soc->num_pmc_clks;
2438 if (pmc->soc->has_blink_output)
2444 clk_data = devm_kmalloc(pmc->dev, sizeof(*clk_data), GFP_KERNEL);
2448 clk_data->clks = devm_kcalloc(pmc->dev, TEGRA_PMC_CLK_MAX,
2449 sizeof(*clk_data->clks), GFP_KERNEL);
2450 if (!clk_data->clks)
2453 clk_data->clk_num = TEGRA_PMC_CLK_MAX;
2455 for (i = 0; i < TEGRA_PMC_CLK_MAX; i++)
2456 clk_data->clks[i] = ERR_PTR(-ENOENT);
2458 for (i = 0; i < pmc->soc->num_pmc_clks; i++) {
2459 const struct pmc_clk_init_data *data;
2461 data = pmc->soc->pmc_clks_data + i;
2463 clk = tegra_pmc_clk_out_register(pmc, data, PMC_CLK_OUT_CNTRL);
2465 dev_warn(pmc->dev, "unable to register clock %s: %d\n",
2466 data->name, PTR_ERR_OR_ZERO(clk));
2470 err = clk_register_clkdev(clk, data->name, NULL);
2473 "unable to register %s clock lookup: %d\n",
2478 clk_data->clks[data->clk_id] = clk;
2481 if (pmc->soc->has_blink_output) {
2482 tegra_pmc_writel(pmc, 0x0, PMC_BLINK_TIMER);
2483 clk = tegra_pmc_clk_gate_register(pmc,
2484 "pmc_blink_override",
2487 PMC_DPD_PADS_ORIDE_BLINK);
2490 "unable to register pmc_blink_override: %d\n",
2491 PTR_ERR_OR_ZERO(clk));
2495 clk = tegra_pmc_clk_gate_register(pmc, "pmc_blink",
2496 "pmc_blink_override",
2498 PMC_CNTRL_BLINK_EN);
2501 "unable to register pmc_blink: %d\n",
2502 PTR_ERR_OR_ZERO(clk));
2506 err = clk_register_clkdev(clk, "pmc_blink", NULL);
2509 "unable to register pmc_blink lookup: %d\n",
2514 clk_data->clks[TEGRA_PMC_CLK_BLINK] = clk;
2517 err = of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
2519 dev_warn(pmc->dev, "failed to add pmc clock provider: %d\n",
2523 static const struct regmap_range pmc_usb_sleepwalk_ranges[] = {
2524 regmap_reg_range(PMC_USB_DEBOUNCE_DEL, PMC_USB_AO),
2525 regmap_reg_range(PMC_UTMIP_UHSIC_TRIGGERS, PMC_UTMIP_UHSIC_SAVED_STATE),
2526 regmap_reg_range(PMC_UTMIP_TERM_PAD_CFG, PMC_UTMIP_UHSIC_FAKE),
2527 regmap_reg_range(PMC_UTMIP_UHSIC_LINE_WAKEUP, PMC_UTMIP_UHSIC_LINE_WAKEUP),
2528 regmap_reg_range(PMC_UTMIP_BIAS_MASTER_CNTRL, PMC_UTMIP_MASTER_CONFIG),
2529 regmap_reg_range(PMC_UTMIP_UHSIC2_TRIGGERS, PMC_UTMIP_MASTER2_CONFIG),
2530 regmap_reg_range(PMC_UTMIP_PAD_CFG0, PMC_UTMIP_UHSIC_SLEEP_CFG1),
2531 regmap_reg_range(PMC_UTMIP_SLEEPWALK_P3, PMC_UTMIP_SLEEPWALK_P3),
2534 static const struct regmap_access_table pmc_usb_sleepwalk_table = {
2535 .yes_ranges = pmc_usb_sleepwalk_ranges,
2536 .n_yes_ranges = ARRAY_SIZE(pmc_usb_sleepwalk_ranges),
2539 static int tegra_pmc_regmap_readl(void *context, unsigned int offset, unsigned int *value)
2541 struct tegra_pmc *pmc = context;
2543 *value = tegra_pmc_readl(pmc, offset);
2547 static int tegra_pmc_regmap_writel(void *context, unsigned int offset, unsigned int value)
2549 struct tegra_pmc *pmc = context;
2551 tegra_pmc_writel(pmc, value, offset);
2555 static const struct regmap_config usb_sleepwalk_regmap_config = {
2556 .name = "usb_sleepwalk",
2561 .rd_table = &pmc_usb_sleepwalk_table,
2562 .wr_table = &pmc_usb_sleepwalk_table,
2563 .reg_read = tegra_pmc_regmap_readl,
2564 .reg_write = tegra_pmc_regmap_writel,
2567 static int tegra_pmc_regmap_init(struct tegra_pmc *pmc)
2569 struct regmap *regmap;
2572 if (pmc->soc->has_usb_sleepwalk) {
2573 regmap = devm_regmap_init(pmc->dev, NULL, pmc, &usb_sleepwalk_regmap_config);
2574 if (IS_ERR(regmap)) {
2575 err = PTR_ERR(regmap);
2576 dev_err(pmc->dev, "failed to allocate register map (%d)\n", err);
2584 static int tegra_pmc_probe(struct platform_device *pdev)
2587 struct resource *res;
2591 * Early initialisation should have configured an initial
2592 * register mapping and setup the soc data pointer. If these
2593 * are not valid then something went badly wrong!
2595 if (WARN_ON(!pmc->base || !pmc->soc))
2598 err = tegra_pmc_parse_dt(pmc, pdev->dev.of_node);
2602 /* take over the memory region from the early initialization */
2603 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2604 base = devm_ioremap_resource(&pdev->dev, res);
2606 return PTR_ERR(base);
2608 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wake");
2610 pmc->wake = devm_ioremap_resource(&pdev->dev, res);
2611 if (IS_ERR(pmc->wake))
2612 return PTR_ERR(pmc->wake);
2617 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aotag");
2619 pmc->aotag = devm_ioremap_resource(&pdev->dev, res);
2620 if (IS_ERR(pmc->aotag))
2621 return PTR_ERR(pmc->aotag);
2626 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scratch");
2628 pmc->scratch = devm_ioremap_resource(&pdev->dev, res);
2629 if (IS_ERR(pmc->scratch))
2630 return PTR_ERR(pmc->scratch);
2632 pmc->scratch = base;
2635 pmc->clk = devm_clk_get(&pdev->dev, "pclk");
2636 if (IS_ERR(pmc->clk)) {
2637 err = PTR_ERR(pmc->clk);
2639 if (err != -ENOENT) {
2640 dev_err(&pdev->dev, "failed to get pclk: %d\n", err);
2648 * PCLK clock rate can't be retrieved using CLK API because it
2649 * causes lockup if CPU enters LP2 idle state from some other
2650 * CLK notifier, hence we're caching the rate's value locally.
2653 pmc->clk_nb.notifier_call = tegra_pmc_clk_notify_cb;
2654 err = clk_notifier_register(pmc->clk, &pmc->clk_nb);
2657 "failed to register clk notifier\n");
2661 pmc->rate = clk_get_rate(pmc->clk);
2664 pmc->dev = &pdev->dev;
2666 tegra_pmc_init(pmc);
2668 tegra_pmc_init_tsense_reset(pmc);
2670 tegra_pmc_reset_sysfs_init(pmc);
2672 if (IS_ENABLED(CONFIG_DEBUG_FS)) {
2673 err = tegra_powergate_debugfs_init();
2678 err = register_restart_handler(&tegra_pmc_restart_handler);
2680 dev_err(&pdev->dev, "unable to register restart handler, %d\n",
2682 goto cleanup_debugfs;
2685 err = tegra_pmc_pinctrl_init(pmc);
2687 goto cleanup_restart_handler;
2689 err = tegra_pmc_regmap_init(pmc);
2691 goto cleanup_restart_handler;
2693 err = tegra_powergate_init(pmc, pdev->dev.of_node);
2695 goto cleanup_powergates;
2697 err = tegra_pmc_irq_init(pmc);
2699 goto cleanup_powergates;
2701 mutex_lock(&pmc->powergates_lock);
2704 mutex_unlock(&pmc->powergates_lock);
2706 tegra_pmc_clock_register(pmc, pdev->dev.of_node);
2707 platform_set_drvdata(pdev, pmc);
2712 tegra_powergate_remove_all(pdev->dev.of_node);
2713 cleanup_restart_handler:
2714 unregister_restart_handler(&tegra_pmc_restart_handler);
2716 debugfs_remove(pmc->debugfs);
2718 device_remove_file(&pdev->dev, &dev_attr_reset_reason);
2719 device_remove_file(&pdev->dev, &dev_attr_reset_level);
2720 clk_notifier_unregister(pmc->clk, &pmc->clk_nb);
2725 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
2726 static int tegra_pmc_suspend(struct device *dev)
2728 struct tegra_pmc *pmc = dev_get_drvdata(dev);
2730 tegra_pmc_writel(pmc, virt_to_phys(tegra_resume), PMC_SCRATCH41);
2735 static int tegra_pmc_resume(struct device *dev)
2737 struct tegra_pmc *pmc = dev_get_drvdata(dev);
2739 tegra_pmc_writel(pmc, 0x0, PMC_SCRATCH41);
2744 static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume);
2748 static const char * const tegra20_powergates[] = {
2749 [TEGRA_POWERGATE_CPU] = "cpu",
2750 [TEGRA_POWERGATE_3D] = "3d",
2751 [TEGRA_POWERGATE_VENC] = "venc",
2752 [TEGRA_POWERGATE_VDEC] = "vdec",
2753 [TEGRA_POWERGATE_PCIE] = "pcie",
2754 [TEGRA_POWERGATE_L2] = "l2",
2755 [TEGRA_POWERGATE_MPE] = "mpe",
2758 static const struct tegra_pmc_regs tegra20_pmc_regs = {
2761 .dpd_status = 0x1bc,
2763 .dpd2_status = 0x1c4,
2764 .rst_status = 0x1b4,
2765 .rst_source_shift = 0x0,
2766 .rst_source_mask = 0x7,
2767 .rst_level_shift = 0x0,
2768 .rst_level_mask = 0x0,
2771 static void tegra20_pmc_init(struct tegra_pmc *pmc)
2773 u32 value, osc, pmu, off;
2775 /* Always enable CPU power request */
2776 value = tegra_pmc_readl(pmc, PMC_CNTRL);
2777 value |= PMC_CNTRL_CPU_PWRREQ_OE;
2778 tegra_pmc_writel(pmc, value, PMC_CNTRL);
2780 value = tegra_pmc_readl(pmc, PMC_CNTRL);
2782 if (pmc->sysclkreq_high)
2783 value &= ~PMC_CNTRL_SYSCLK_POLARITY;
2785 value |= PMC_CNTRL_SYSCLK_POLARITY;
2787 if (pmc->corereq_high)
2788 value &= ~PMC_CNTRL_PWRREQ_POLARITY;
2790 value |= PMC_CNTRL_PWRREQ_POLARITY;
2792 /* configure the output polarity while the request is tristated */
2793 tegra_pmc_writel(pmc, value, PMC_CNTRL);
2795 /* now enable the request */
2796 value = tegra_pmc_readl(pmc, PMC_CNTRL);
2797 value |= PMC_CNTRL_SYSCLK_OE;
2798 tegra_pmc_writel(pmc, value, PMC_CNTRL);
2800 /* program core timings which are applicable only for suspend state */
2801 if (pmc->suspend_mode != TEGRA_SUSPEND_NONE) {
2802 osc = DIV_ROUND_UP(pmc->core_osc_time * 8192, 1000000);
2803 pmu = DIV_ROUND_UP(pmc->core_pmu_time * 32768, 1000000);
2804 off = DIV_ROUND_UP(pmc->core_off_time * 32768, 1000000);
2805 tegra_pmc_writel(pmc, ((osc << 8) & 0xff00) | (pmu & 0xff),
2806 PMC_COREPWRGOOD_TIMER);
2807 tegra_pmc_writel(pmc, off, PMC_COREPWROFF_TIMER);
2811 static void tegra20_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
2812 struct device_node *np,
2817 value = tegra_pmc_readl(pmc, PMC_CNTRL);
2820 value |= PMC_CNTRL_INTR_POLARITY;
2822 value &= ~PMC_CNTRL_INTR_POLARITY;
2824 tegra_pmc_writel(pmc, value, PMC_CNTRL);
2827 static const struct tegra_pmc_soc tegra20_pmc_soc = {
2828 .num_powergates = ARRAY_SIZE(tegra20_powergates),
2829 .powergates = tegra20_powergates,
2830 .num_cpu_powergates = 0,
2831 .cpu_powergates = NULL,
2832 .has_tsense_reset = false,
2833 .has_gpu_clamps = false,
2834 .needs_mbist_war = false,
2835 .has_impl_33v_pwr = false,
2836 .maybe_tz_only = false,
2841 .regs = &tegra20_pmc_regs,
2842 .init = tegra20_pmc_init,
2843 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
2844 .powergate_set = tegra20_powergate_set,
2845 .reset_sources = NULL,
2846 .num_reset_sources = 0,
2847 .reset_levels = NULL,
2848 .num_reset_levels = 0,
2849 .pmc_clks_data = NULL,
2851 .has_blink_output = true,
2852 .has_usb_sleepwalk = false,
2855 static const char * const tegra30_powergates[] = {
2856 [TEGRA_POWERGATE_CPU] = "cpu0",
2857 [TEGRA_POWERGATE_3D] = "3d0",
2858 [TEGRA_POWERGATE_VENC] = "venc",
2859 [TEGRA_POWERGATE_VDEC] = "vdec",
2860 [TEGRA_POWERGATE_PCIE] = "pcie",
2861 [TEGRA_POWERGATE_L2] = "l2",
2862 [TEGRA_POWERGATE_MPE] = "mpe",
2863 [TEGRA_POWERGATE_HEG] = "heg",
2864 [TEGRA_POWERGATE_SATA] = "sata",
2865 [TEGRA_POWERGATE_CPU1] = "cpu1",
2866 [TEGRA_POWERGATE_CPU2] = "cpu2",
2867 [TEGRA_POWERGATE_CPU3] = "cpu3",
2868 [TEGRA_POWERGATE_CELP] = "celp",
2869 [TEGRA_POWERGATE_3D1] = "3d1",
2872 static const u8 tegra30_cpu_powergates[] = {
2873 TEGRA_POWERGATE_CPU,
2874 TEGRA_POWERGATE_CPU1,
2875 TEGRA_POWERGATE_CPU2,
2876 TEGRA_POWERGATE_CPU3,
2879 static const char * const tegra30_reset_sources[] = {
2887 static const struct tegra_pmc_soc tegra30_pmc_soc = {
2888 .num_powergates = ARRAY_SIZE(tegra30_powergates),
2889 .powergates = tegra30_powergates,
2890 .num_cpu_powergates = ARRAY_SIZE(tegra30_cpu_powergates),
2891 .cpu_powergates = tegra30_cpu_powergates,
2892 .has_tsense_reset = true,
2893 .has_gpu_clamps = false,
2894 .needs_mbist_war = false,
2895 .has_impl_33v_pwr = false,
2896 .maybe_tz_only = false,
2901 .regs = &tegra20_pmc_regs,
2902 .init = tegra20_pmc_init,
2903 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
2904 .powergate_set = tegra20_powergate_set,
2905 .reset_sources = tegra30_reset_sources,
2906 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
2907 .reset_levels = NULL,
2908 .num_reset_levels = 0,
2909 .pmc_clks_data = tegra_pmc_clks_data,
2910 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
2911 .has_blink_output = true,
2912 .has_usb_sleepwalk = false,
2915 static const char * const tegra114_powergates[] = {
2916 [TEGRA_POWERGATE_CPU] = "crail",
2917 [TEGRA_POWERGATE_3D] = "3d",
2918 [TEGRA_POWERGATE_VENC] = "venc",
2919 [TEGRA_POWERGATE_VDEC] = "vdec",
2920 [TEGRA_POWERGATE_MPE] = "mpe",
2921 [TEGRA_POWERGATE_HEG] = "heg",
2922 [TEGRA_POWERGATE_CPU1] = "cpu1",
2923 [TEGRA_POWERGATE_CPU2] = "cpu2",
2924 [TEGRA_POWERGATE_CPU3] = "cpu3",
2925 [TEGRA_POWERGATE_CELP] = "celp",
2926 [TEGRA_POWERGATE_CPU0] = "cpu0",
2927 [TEGRA_POWERGATE_C0NC] = "c0nc",
2928 [TEGRA_POWERGATE_C1NC] = "c1nc",
2929 [TEGRA_POWERGATE_DIS] = "dis",
2930 [TEGRA_POWERGATE_DISB] = "disb",
2931 [TEGRA_POWERGATE_XUSBA] = "xusba",
2932 [TEGRA_POWERGATE_XUSBB] = "xusbb",
2933 [TEGRA_POWERGATE_XUSBC] = "xusbc",
2936 static const u8 tegra114_cpu_powergates[] = {
2937 TEGRA_POWERGATE_CPU0,
2938 TEGRA_POWERGATE_CPU1,
2939 TEGRA_POWERGATE_CPU2,
2940 TEGRA_POWERGATE_CPU3,
2943 static const struct tegra_pmc_soc tegra114_pmc_soc = {
2944 .num_powergates = ARRAY_SIZE(tegra114_powergates),
2945 .powergates = tegra114_powergates,
2946 .num_cpu_powergates = ARRAY_SIZE(tegra114_cpu_powergates),
2947 .cpu_powergates = tegra114_cpu_powergates,
2948 .has_tsense_reset = true,
2949 .has_gpu_clamps = false,
2950 .needs_mbist_war = false,
2951 .has_impl_33v_pwr = false,
2952 .maybe_tz_only = false,
2957 .regs = &tegra20_pmc_regs,
2958 .init = tegra20_pmc_init,
2959 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
2960 .powergate_set = tegra114_powergate_set,
2961 .reset_sources = tegra30_reset_sources,
2962 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
2963 .reset_levels = NULL,
2964 .num_reset_levels = 0,
2965 .pmc_clks_data = tegra_pmc_clks_data,
2966 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
2967 .has_blink_output = true,
2968 .has_usb_sleepwalk = false,
2971 static const char * const tegra124_powergates[] = {
2972 [TEGRA_POWERGATE_CPU] = "crail",
2973 [TEGRA_POWERGATE_3D] = "3d",
2974 [TEGRA_POWERGATE_VENC] = "venc",
2975 [TEGRA_POWERGATE_PCIE] = "pcie",
2976 [TEGRA_POWERGATE_VDEC] = "vdec",
2977 [TEGRA_POWERGATE_MPE] = "mpe",
2978 [TEGRA_POWERGATE_HEG] = "heg",
2979 [TEGRA_POWERGATE_SATA] = "sata",
2980 [TEGRA_POWERGATE_CPU1] = "cpu1",
2981 [TEGRA_POWERGATE_CPU2] = "cpu2",
2982 [TEGRA_POWERGATE_CPU3] = "cpu3",
2983 [TEGRA_POWERGATE_CELP] = "celp",
2984 [TEGRA_POWERGATE_CPU0] = "cpu0",
2985 [TEGRA_POWERGATE_C0NC] = "c0nc",
2986 [TEGRA_POWERGATE_C1NC] = "c1nc",
2987 [TEGRA_POWERGATE_SOR] = "sor",
2988 [TEGRA_POWERGATE_DIS] = "dis",
2989 [TEGRA_POWERGATE_DISB] = "disb",
2990 [TEGRA_POWERGATE_XUSBA] = "xusba",
2991 [TEGRA_POWERGATE_XUSBB] = "xusbb",
2992 [TEGRA_POWERGATE_XUSBC] = "xusbc",
2993 [TEGRA_POWERGATE_VIC] = "vic",
2994 [TEGRA_POWERGATE_IRAM] = "iram",
2997 static const u8 tegra124_cpu_powergates[] = {
2998 TEGRA_POWERGATE_CPU0,
2999 TEGRA_POWERGATE_CPU1,
3000 TEGRA_POWERGATE_CPU2,
3001 TEGRA_POWERGATE_CPU3,
3004 #define TEGRA_IO_PAD(_id, _dpd, _voltage, _name) \
3005 ((struct tegra_io_pad_soc) { \
3008 .voltage = (_voltage), \
3012 #define TEGRA_IO_PIN_DESC(_id, _dpd, _voltage, _name) \
3013 ((struct pinctrl_pin_desc) { \
3018 #define TEGRA124_IO_PAD_TABLE(_pad) \
3019 /* .id .dpd .voltage .name */ \
3020 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3021 _pad(TEGRA_IO_PAD_BB, 15, UINT_MAX, "bb"), \
3022 _pad(TEGRA_IO_PAD_CAM, 36, UINT_MAX, "cam"), \
3023 _pad(TEGRA_IO_PAD_COMP, 22, UINT_MAX, "comp"), \
3024 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3025 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csb"), \
3026 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "cse"), \
3027 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3028 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
3029 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
3030 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
3031 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
3032 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3033 _pad(TEGRA_IO_PAD_HV, 38, UINT_MAX, "hv"), \
3034 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
3035 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3036 _pad(TEGRA_IO_PAD_NAND, 13, UINT_MAX, "nand"), \
3037 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
3038 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
3039 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3040 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3041 _pad(TEGRA_IO_PAD_SDMMC1, 33, UINT_MAX, "sdmmc1"), \
3042 _pad(TEGRA_IO_PAD_SDMMC3, 34, UINT_MAX, "sdmmc3"), \
3043 _pad(TEGRA_IO_PAD_SDMMC4, 35, UINT_MAX, "sdmmc4"), \
3044 _pad(TEGRA_IO_PAD_SYS_DDC, 58, UINT_MAX, "sys_ddc"), \
3045 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3046 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3047 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3048 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3049 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb_bias")
3051 static const struct tegra_io_pad_soc tegra124_io_pads[] = {
3052 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PAD)
3055 static const struct pinctrl_pin_desc tegra124_pin_descs[] = {
3056 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3059 static const struct tegra_pmc_soc tegra124_pmc_soc = {
3060 .num_powergates = ARRAY_SIZE(tegra124_powergates),
3061 .powergates = tegra124_powergates,
3062 .num_cpu_powergates = ARRAY_SIZE(tegra124_cpu_powergates),
3063 .cpu_powergates = tegra124_cpu_powergates,
3064 .has_tsense_reset = true,
3065 .has_gpu_clamps = true,
3066 .needs_mbist_war = false,
3067 .has_impl_33v_pwr = false,
3068 .maybe_tz_only = false,
3069 .num_io_pads = ARRAY_SIZE(tegra124_io_pads),
3070 .io_pads = tegra124_io_pads,
3071 .num_pin_descs = ARRAY_SIZE(tegra124_pin_descs),
3072 .pin_descs = tegra124_pin_descs,
3073 .regs = &tegra20_pmc_regs,
3074 .init = tegra20_pmc_init,
3075 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3076 .powergate_set = tegra114_powergate_set,
3077 .reset_sources = tegra30_reset_sources,
3078 .num_reset_sources = ARRAY_SIZE(tegra30_reset_sources),
3079 .reset_levels = NULL,
3080 .num_reset_levels = 0,
3081 .pmc_clks_data = tegra_pmc_clks_data,
3082 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3083 .has_blink_output = true,
3084 .has_usb_sleepwalk = true,
3087 static const char * const tegra210_powergates[] = {
3088 [TEGRA_POWERGATE_CPU] = "crail",
3089 [TEGRA_POWERGATE_3D] = "3d",
3090 [TEGRA_POWERGATE_VENC] = "venc",
3091 [TEGRA_POWERGATE_PCIE] = "pcie",
3092 [TEGRA_POWERGATE_MPE] = "mpe",
3093 [TEGRA_POWERGATE_SATA] = "sata",
3094 [TEGRA_POWERGATE_CPU1] = "cpu1",
3095 [TEGRA_POWERGATE_CPU2] = "cpu2",
3096 [TEGRA_POWERGATE_CPU3] = "cpu3",
3097 [TEGRA_POWERGATE_CPU0] = "cpu0",
3098 [TEGRA_POWERGATE_C0NC] = "c0nc",
3099 [TEGRA_POWERGATE_SOR] = "sor",
3100 [TEGRA_POWERGATE_DIS] = "dis",
3101 [TEGRA_POWERGATE_DISB] = "disb",
3102 [TEGRA_POWERGATE_XUSBA] = "xusba",
3103 [TEGRA_POWERGATE_XUSBB] = "xusbb",
3104 [TEGRA_POWERGATE_XUSBC] = "xusbc",
3105 [TEGRA_POWERGATE_VIC] = "vic",
3106 [TEGRA_POWERGATE_IRAM] = "iram",
3107 [TEGRA_POWERGATE_NVDEC] = "nvdec",
3108 [TEGRA_POWERGATE_NVJPG] = "nvjpg",
3109 [TEGRA_POWERGATE_AUD] = "aud",
3110 [TEGRA_POWERGATE_DFD] = "dfd",
3111 [TEGRA_POWERGATE_VE2] = "ve2",
3114 static const u8 tegra210_cpu_powergates[] = {
3115 TEGRA_POWERGATE_CPU0,
3116 TEGRA_POWERGATE_CPU1,
3117 TEGRA_POWERGATE_CPU2,
3118 TEGRA_POWERGATE_CPU3,
3121 #define TEGRA210_IO_PAD_TABLE(_pad) \
3122 /* .id .dpd .voltage .name */ \
3123 _pad(TEGRA_IO_PAD_AUDIO, 17, 5, "audio"), \
3124 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 18, "audio-hv"), \
3125 _pad(TEGRA_IO_PAD_CAM, 36, 10, "cam"), \
3126 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3127 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3128 _pad(TEGRA_IO_PAD_CSIC, 42, UINT_MAX, "csic"), \
3129 _pad(TEGRA_IO_PAD_CSID, 43, UINT_MAX, "csid"), \
3130 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "csie"), \
3131 _pad(TEGRA_IO_PAD_CSIF, 45, UINT_MAX, "csif"), \
3132 _pad(TEGRA_IO_PAD_DBG, 25, 19, "dbg"), \
3133 _pad(TEGRA_IO_PAD_DEBUG_NONAO, 26, UINT_MAX, "debug-nonao"), \
3134 _pad(TEGRA_IO_PAD_DMIC, 50, 20, "dmic"), \
3135 _pad(TEGRA_IO_PAD_DP, 51, UINT_MAX, "dp"), \
3136 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3137 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
3138 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
3139 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
3140 _pad(TEGRA_IO_PAD_EMMC, 35, UINT_MAX, "emmc"), \
3141 _pad(TEGRA_IO_PAD_EMMC2, 37, UINT_MAX, "emmc2"), \
3142 _pad(TEGRA_IO_PAD_GPIO, 27, 21, "gpio"), \
3143 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
3144 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3145 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
3146 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3147 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
3148 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
3149 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3150 _pad(TEGRA_IO_PAD_PEX_CNTRL, UINT_MAX, 11, "pex-cntrl"), \
3151 _pad(TEGRA_IO_PAD_SDMMC1, 33, 12, "sdmmc1"), \
3152 _pad(TEGRA_IO_PAD_SDMMC3, 34, 13, "sdmmc3"), \
3153 _pad(TEGRA_IO_PAD_SPI, 46, 22, "spi"), \
3154 _pad(TEGRA_IO_PAD_SPI_HV, 47, 23, "spi-hv"), \
3155 _pad(TEGRA_IO_PAD_UART, 14, 2, "uart"), \
3156 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3157 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3158 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3159 _pad(TEGRA_IO_PAD_USB3, 18, UINT_MAX, "usb3"), \
3160 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias")
3162 static const struct tegra_io_pad_soc tegra210_io_pads[] = {
3163 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PAD)
3166 static const struct pinctrl_pin_desc tegra210_pin_descs[] = {
3167 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3170 static const char * const tegra210_reset_sources[] = {
3179 static const struct tegra_wake_event tegra210_wake_events[] = {
3180 TEGRA_WAKE_IRQ("rtc", 16, 2),
3181 TEGRA_WAKE_IRQ("pmu", 51, 86),
3184 static const struct tegra_pmc_soc tegra210_pmc_soc = {
3185 .num_powergates = ARRAY_SIZE(tegra210_powergates),
3186 .powergates = tegra210_powergates,
3187 .num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates),
3188 .cpu_powergates = tegra210_cpu_powergates,
3189 .has_tsense_reset = true,
3190 .has_gpu_clamps = true,
3191 .needs_mbist_war = true,
3192 .has_impl_33v_pwr = false,
3193 .maybe_tz_only = true,
3194 .num_io_pads = ARRAY_SIZE(tegra210_io_pads),
3195 .io_pads = tegra210_io_pads,
3196 .num_pin_descs = ARRAY_SIZE(tegra210_pin_descs),
3197 .pin_descs = tegra210_pin_descs,
3198 .regs = &tegra20_pmc_regs,
3199 .init = tegra20_pmc_init,
3200 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
3201 .powergate_set = tegra114_powergate_set,
3202 .irq_set_wake = tegra210_pmc_irq_set_wake,
3203 .irq_set_type = tegra210_pmc_irq_set_type,
3204 .reset_sources = tegra210_reset_sources,
3205 .num_reset_sources = ARRAY_SIZE(tegra210_reset_sources),
3206 .reset_levels = NULL,
3207 .num_reset_levels = 0,
3208 .num_wake_events = ARRAY_SIZE(tegra210_wake_events),
3209 .wake_events = tegra210_wake_events,
3210 .pmc_clks_data = tegra_pmc_clks_data,
3211 .num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data),
3212 .has_blink_output = true,
3213 .has_usb_sleepwalk = true,
3216 #define TEGRA186_IO_PAD_TABLE(_pad) \
3217 /* .id .dpd .voltage .name */ \
3218 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
3219 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
3220 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
3221 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3222 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
3223 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
3224 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3225 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
3226 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
3227 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
3228 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
3229 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias"), \
3230 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3231 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3232 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
3233 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
3234 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
3235 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
3236 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3237 _pad(TEGRA_IO_PAD_SDMMC2_HV, 34, 5, "sdmmc2-hv"), \
3238 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
3239 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
3240 _pad(TEGRA_IO_PAD_DSIB, 40, UINT_MAX, "dsib"), \
3241 _pad(TEGRA_IO_PAD_DSIC, 41, UINT_MAX, "dsic"), \
3242 _pad(TEGRA_IO_PAD_DSID, 42, UINT_MAX, "dsid"), \
3243 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
3244 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
3245 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
3246 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
3247 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
3248 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
3249 _pad(TEGRA_IO_PAD_DMIC_HV, 52, 2, "dmic-hv"), \
3250 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
3251 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
3252 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
3253 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
3254 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
3255 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
3257 static const struct tegra_io_pad_soc tegra186_io_pads[] = {
3258 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PAD)
3261 static const struct pinctrl_pin_desc tegra186_pin_descs[] = {
3262 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3265 static const struct tegra_pmc_regs tegra186_pmc_regs = {
3270 .dpd2_status = 0x80,
3272 .rst_source_shift = 0x2,
3273 .rst_source_mask = 0x3c,
3274 .rst_level_shift = 0x0,
3275 .rst_level_mask = 0x3,
3278 static void tegra186_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
3279 struct device_node *np,
3282 struct resource regs;
3287 index = of_property_match_string(np, "reg-names", "wake");
3289 dev_err(pmc->dev, "failed to find PMC wake registers\n");
3293 of_address_to_resource(np, index, ®s);
3295 wake = ioremap(regs.start, resource_size(®s));
3297 dev_err(pmc->dev, "failed to map PMC wake registers\n");
3301 value = readl(wake + WAKE_AOWAKE_CTRL);
3304 value |= WAKE_AOWAKE_CTRL_INTR_POLARITY;
3306 value &= ~WAKE_AOWAKE_CTRL_INTR_POLARITY;
3308 writel(value, wake + WAKE_AOWAKE_CTRL);
3313 static const char * const tegra186_reset_sources[] = {
3331 static const char * const tegra186_reset_levels[] = {
3332 "L0", "L1", "L2", "WARM"
3335 static const struct tegra_wake_event tegra186_wake_events[] = {
3336 TEGRA_WAKE_IRQ("pmu", 24, 209),
3337 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA186_AON_GPIO(FF, 0)),
3338 TEGRA_WAKE_IRQ("rtc", 73, 10),
3341 static const struct tegra_pmc_soc tegra186_pmc_soc = {
3342 .num_powergates = 0,
3344 .num_cpu_powergates = 0,
3345 .cpu_powergates = NULL,
3346 .has_tsense_reset = false,
3347 .has_gpu_clamps = false,
3348 .needs_mbist_war = false,
3349 .has_impl_33v_pwr = true,
3350 .maybe_tz_only = false,
3351 .num_io_pads = ARRAY_SIZE(tegra186_io_pads),
3352 .io_pads = tegra186_io_pads,
3353 .num_pin_descs = ARRAY_SIZE(tegra186_pin_descs),
3354 .pin_descs = tegra186_pin_descs,
3355 .regs = &tegra186_pmc_regs,
3357 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3358 .irq_set_wake = tegra186_pmc_irq_set_wake,
3359 .irq_set_type = tegra186_pmc_irq_set_type,
3360 .reset_sources = tegra186_reset_sources,
3361 .num_reset_sources = ARRAY_SIZE(tegra186_reset_sources),
3362 .reset_levels = tegra186_reset_levels,
3363 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3364 .num_wake_events = ARRAY_SIZE(tegra186_wake_events),
3365 .wake_events = tegra186_wake_events,
3366 .pmc_clks_data = NULL,
3368 .has_blink_output = false,
3369 .has_usb_sleepwalk = false,
3372 #define TEGRA194_IO_PAD_TABLE(_pad) \
3373 /* .id .dpd .voltage .name */ \
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_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
3377 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
3378 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
3379 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
3380 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
3381 _pad(TEGRA_IO_PAD_EQOS, 8, UINT_MAX, "eqos"), \
3382 _pad(TEGRA_IO_PAD_PEX_CLK_2_BIAS, 9, UINT_MAX, "pex-clk-2-bias"), \
3383 _pad(TEGRA_IO_PAD_PEX_CLK_2, 10, UINT_MAX, "pex-clk-2"), \
3384 _pad(TEGRA_IO_PAD_DAP3, 11, UINT_MAX, "dap3"), \
3385 _pad(TEGRA_IO_PAD_DAP5, 12, UINT_MAX, "dap5"), \
3386 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
3387 _pad(TEGRA_IO_PAD_PWR_CTL, 15, UINT_MAX, "pwr-ctl"), \
3388 _pad(TEGRA_IO_PAD_SOC_GPIO53, 16, UINT_MAX, "soc-gpio53"), \
3389 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
3390 _pad(TEGRA_IO_PAD_GP_PWM2, 18, UINT_MAX, "gp-pwm2"), \
3391 _pad(TEGRA_IO_PAD_GP_PWM3, 19, UINT_MAX, "gp-pwm3"), \
3392 _pad(TEGRA_IO_PAD_SOC_GPIO12, 20, UINT_MAX, "soc-gpio12"), \
3393 _pad(TEGRA_IO_PAD_SOC_GPIO13, 21, UINT_MAX, "soc-gpio13"), \
3394 _pad(TEGRA_IO_PAD_SOC_GPIO10, 22, UINT_MAX, "soc-gpio10"), \
3395 _pad(TEGRA_IO_PAD_UART4, 23, UINT_MAX, "uart4"), \
3396 _pad(TEGRA_IO_PAD_UART5, 24, UINT_MAX, "uart5"), \
3397 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
3398 _pad(TEGRA_IO_PAD_HDMI_DP3, 26, UINT_MAX, "hdmi-dp3"), \
3399 _pad(TEGRA_IO_PAD_HDMI_DP2, 27, UINT_MAX, "hdmi-dp2"), \
3400 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
3401 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
3402 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
3403 _pad(TEGRA_IO_PAD_PEX_CTL2, 33, UINT_MAX, "pex-ctl2"), \
3404 _pad(TEGRA_IO_PAD_PEX_L0_RST_N, 34, UINT_MAX, "pex-l0-rst"), \
3405 _pad(TEGRA_IO_PAD_PEX_L1_RST_N, 35, UINT_MAX, "pex-l1-rst"), \
3406 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
3407 _pad(TEGRA_IO_PAD_PEX_L5_RST_N, 37, UINT_MAX, "pex-l5-rst"), \
3408 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
3409 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
3410 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
3411 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
3412 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
3413 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
3414 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
3415 _pad(TEGRA_IO_PAD_CSIG, 50, UINT_MAX, "csig"), \
3416 _pad(TEGRA_IO_PAD_CSIH, 51, UINT_MAX, "csih"), \
3417 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
3418 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
3419 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
3420 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
3421 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
3422 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
3424 static const struct tegra_io_pad_soc tegra194_io_pads[] = {
3425 TEGRA194_IO_PAD_TABLE(TEGRA_IO_PAD)
3428 static const struct pinctrl_pin_desc tegra194_pin_descs[] = {
3429 TEGRA194_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
3432 static const struct tegra_pmc_regs tegra194_pmc_regs = {
3437 .dpd2_status = 0x80,
3439 .rst_source_shift = 0x2,
3440 .rst_source_mask = 0x7c,
3441 .rst_level_shift = 0x0,
3442 .rst_level_mask = 0x3,
3445 static const char * const tegra194_reset_sources[] = {
3469 static const struct tegra_wake_event tegra194_wake_events[] = {
3470 TEGRA_WAKE_IRQ("pmu", 24, 209),
3471 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA194_AON_GPIO(EE, 4)),
3472 TEGRA_WAKE_IRQ("rtc", 73, 10),
3475 static const struct tegra_pmc_soc tegra194_pmc_soc = {
3476 .num_powergates = 0,
3478 .num_cpu_powergates = 0,
3479 .cpu_powergates = NULL,
3480 .has_tsense_reset = false,
3481 .has_gpu_clamps = false,
3482 .needs_mbist_war = false,
3483 .has_impl_33v_pwr = true,
3484 .maybe_tz_only = false,
3485 .num_io_pads = ARRAY_SIZE(tegra194_io_pads),
3486 .io_pads = tegra194_io_pads,
3487 .num_pin_descs = ARRAY_SIZE(tegra194_pin_descs),
3488 .pin_descs = tegra194_pin_descs,
3489 .regs = &tegra194_pmc_regs,
3491 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3492 .irq_set_wake = tegra186_pmc_irq_set_wake,
3493 .irq_set_type = tegra186_pmc_irq_set_type,
3494 .reset_sources = tegra194_reset_sources,
3495 .num_reset_sources = ARRAY_SIZE(tegra194_reset_sources),
3496 .reset_levels = tegra186_reset_levels,
3497 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3498 .num_wake_events = ARRAY_SIZE(tegra194_wake_events),
3499 .wake_events = tegra194_wake_events,
3500 .pmc_clks_data = NULL,
3502 .has_blink_output = false,
3503 .has_usb_sleepwalk = false,
3506 static const struct tegra_pmc_regs tegra234_pmc_regs = {
3513 .rst_source_shift = 0x2,
3514 .rst_source_mask = 0xfc,
3515 .rst_level_shift = 0x0,
3516 .rst_level_mask = 0x3,
3519 static const char * const tegra234_reset_sources[] = {
3543 static const struct tegra_pmc_soc tegra234_pmc_soc = {
3544 .num_powergates = 0,
3546 .num_cpu_powergates = 0,
3547 .cpu_powergates = NULL,
3548 .has_tsense_reset = false,
3549 .has_gpu_clamps = false,
3550 .needs_mbist_war = false,
3551 .has_impl_33v_pwr = true,
3552 .maybe_tz_only = false,
3557 .regs = &tegra234_pmc_regs,
3559 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
3560 .irq_set_wake = tegra186_pmc_irq_set_wake,
3561 .irq_set_type = tegra186_pmc_irq_set_type,
3562 .reset_sources = tegra234_reset_sources,
3563 .num_reset_sources = ARRAY_SIZE(tegra234_reset_sources),
3564 .reset_levels = tegra186_reset_levels,
3565 .num_reset_levels = ARRAY_SIZE(tegra186_reset_levels),
3566 .num_wake_events = 0,
3567 .wake_events = NULL,
3568 .pmc_clks_data = NULL,
3570 .has_blink_output = false,
3573 static const struct of_device_id tegra_pmc_match[] = {
3574 { .compatible = "nvidia,tegra234-pmc", .data = &tegra234_pmc_soc },
3575 { .compatible = "nvidia,tegra194-pmc", .data = &tegra194_pmc_soc },
3576 { .compatible = "nvidia,tegra186-pmc", .data = &tegra186_pmc_soc },
3577 { .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc },
3578 { .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc },
3579 { .compatible = "nvidia,tegra124-pmc", .data = &tegra124_pmc_soc },
3580 { .compatible = "nvidia,tegra114-pmc", .data = &tegra114_pmc_soc },
3581 { .compatible = "nvidia,tegra30-pmc", .data = &tegra30_pmc_soc },
3582 { .compatible = "nvidia,tegra20-pmc", .data = &tegra20_pmc_soc },
3586 static struct platform_driver tegra_pmc_driver = {
3588 .name = "tegra-pmc",
3589 .suppress_bind_attrs = true,
3590 .of_match_table = tegra_pmc_match,
3591 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
3592 .pm = &tegra_pmc_pm_ops,
3595 .probe = tegra_pmc_probe,
3597 builtin_platform_driver(tegra_pmc_driver);
3599 static bool __init tegra_pmc_detect_tz_only(struct tegra_pmc *pmc)
3603 saved = readl(pmc->base + pmc->soc->regs->scratch0);
3604 value = saved ^ 0xffffffff;
3606 if (value == 0xffffffff)
3609 /* write pattern and read it back */
3610 writel(value, pmc->base + pmc->soc->regs->scratch0);
3611 value = readl(pmc->base + pmc->soc->regs->scratch0);
3613 /* if we read all-zeroes, access is restricted to TZ only */
3615 pr_info("access to PMC is restricted to TZ\n");
3619 /* restore original value */
3620 writel(saved, pmc->base + pmc->soc->regs->scratch0);
3626 * Early initialization to allow access to registers in the very early boot
3629 static int __init tegra_pmc_early_init(void)
3631 const struct of_device_id *match;
3632 struct device_node *np;
3633 struct resource regs;
3637 mutex_init(&pmc->powergates_lock);
3639 np = of_find_matching_node_and_match(NULL, tegra_pmc_match, &match);
3642 * Fall back to legacy initialization for 32-bit ARM only. All
3643 * 64-bit ARM device tree files for Tegra are required to have
3646 * This is for backwards-compatibility with old device trees
3647 * that didn't contain a PMC node. Note that in this case the
3648 * SoC data can't be matched and therefore powergating is
3651 if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) {
3652 pr_warn("DT node not found, powergating disabled\n");
3654 regs.start = 0x7000e400;
3655 regs.end = 0x7000e7ff;
3656 regs.flags = IORESOURCE_MEM;
3658 pr_warn("Using memory region %pR\n", ®s);
3661 * At this point we're not running on Tegra, so play
3662 * nice with multi-platform kernels.
3668 * Extract information from the device tree if we've found a
3671 if (of_address_to_resource(np, 0, ®s) < 0) {
3672 pr_err("failed to get PMC registers\n");
3678 pmc->base = ioremap(regs.start, resource_size(®s));
3680 pr_err("failed to map PMC registers\n");
3686 pmc->soc = match->data;
3688 if (pmc->soc->maybe_tz_only)
3689 pmc->tz_only = tegra_pmc_detect_tz_only(pmc);
3691 /* Create a bitmap of the available and valid partitions */
3692 for (i = 0; i < pmc->soc->num_powergates; i++)
3693 if (pmc->soc->powergates[i])
3694 set_bit(i, pmc->powergates_available);
3697 * Invert the interrupt polarity if a PMC device tree node
3698 * exists and contains the nvidia,invert-interrupt property.
3700 invert = of_property_read_bool(np, "nvidia,invert-interrupt");
3702 pmc->soc->setup_irq_polarity(pmc, np, invert);
3709 early_initcall(tegra_pmc_early_init);