2 * drivers/soc/tegra/pmc.c
4 * Copyright (c) 2010 Google, Inc
5 * Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
8 * Colin Cross <ccross@google.com>
10 * This software is licensed under the terms of the GNU General Public
11 * License version 2, as published by the Free Software Foundation, and
12 * may be copied, distributed, and modified under those terms.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
21 #define pr_fmt(fmt) "tegra-pmc: " fmt
23 #include <linux/kernel.h>
24 #include <linux/clk.h>
25 #include <linux/clk/tegra.h>
26 #include <linux/debugfs.h>
27 #include <linux/delay.h>
28 #include <linux/err.h>
29 #include <linux/export.h>
30 #include <linux/init.h>
32 #include <linux/iopoll.h>
33 #include <linux/irq.h>
34 #include <linux/irqdomain.h>
36 #include <linux/of_address.h>
37 #include <linux/of_clk.h>
38 #include <linux/of_irq.h>
39 #include <linux/of_platform.h>
40 #include <linux/pinctrl/pinctrl.h>
41 #include <linux/pinctrl/pinconf.h>
42 #include <linux/pinctrl/pinconf-generic.h>
43 #include <linux/platform_device.h>
44 #include <linux/pm_domain.h>
45 #include <linux/reboot.h>
46 #include <linux/reset.h>
47 #include <linux/seq_file.h>
48 #include <linux/slab.h>
49 #include <linux/spinlock.h>
51 #include <soc/tegra/common.h>
52 #include <soc/tegra/fuse.h>
53 #include <soc/tegra/pmc.h>
55 #include <dt-bindings/interrupt-controller/arm-gic.h>
56 #include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h>
57 #include <dt-bindings/gpio/tegra186-gpio.h>
58 #include <dt-bindings/gpio/tegra194-gpio.h>
61 #define PMC_CNTRL_INTR_POLARITY BIT(17) /* inverts INTR polarity */
62 #define PMC_CNTRL_CPU_PWRREQ_OE BIT(16) /* CPU pwr req enable */
63 #define PMC_CNTRL_CPU_PWRREQ_POLARITY BIT(15) /* CPU pwr req polarity */
64 #define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */
65 #define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */
66 #define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */
67 #define PMC_CNTRL_MAIN_RST BIT(4)
69 #define DPD_SAMPLE 0x020
70 #define DPD_SAMPLE_ENABLE BIT(0)
71 #define DPD_SAMPLE_DISABLE (0 << 0)
73 #define PWRGATE_TOGGLE 0x30
74 #define PWRGATE_TOGGLE_START BIT(8)
76 #define REMOVE_CLAMPING 0x34
78 #define PWRGATE_STATUS 0x38
80 #define PMC_IMPL_E_33V_PWR 0x40
82 #define PMC_PWR_DET 0x48
84 #define PMC_SCRATCH0_MODE_RECOVERY BIT(31)
85 #define PMC_SCRATCH0_MODE_BOOTLOADER BIT(30)
86 #define PMC_SCRATCH0_MODE_RCM BIT(1)
87 #define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \
88 PMC_SCRATCH0_MODE_BOOTLOADER | \
89 PMC_SCRATCH0_MODE_RCM)
91 #define PMC_CPUPWRGOOD_TIMER 0xc8
92 #define PMC_CPUPWROFF_TIMER 0xcc
94 #define PMC_PWR_DET_VALUE 0xe4
96 #define PMC_SCRATCH41 0x140
98 #define PMC_SENSOR_CTRL 0x1b0
99 #define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2)
100 #define PMC_SENSOR_CTRL_ENABLE_RST BIT(1)
102 #define PMC_RST_STATUS_POR 0
103 #define PMC_RST_STATUS_WATCHDOG 1
104 #define PMC_RST_STATUS_SENSOR 2
105 #define PMC_RST_STATUS_SW_MAIN 3
106 #define PMC_RST_STATUS_LP0 4
107 #define PMC_RST_STATUS_AOTAG 5
109 #define IO_DPD_REQ 0x1b8
110 #define IO_DPD_REQ_CODE_IDLE (0U << 30)
111 #define IO_DPD_REQ_CODE_OFF (1U << 30)
112 #define IO_DPD_REQ_CODE_ON (2U << 30)
113 #define IO_DPD_REQ_CODE_MASK (3U << 30)
115 #define IO_DPD_STATUS 0x1bc
116 #define IO_DPD2_REQ 0x1c0
117 #define IO_DPD2_STATUS 0x1c4
118 #define SEL_DPD_TIM 0x1c8
120 #define PMC_SCRATCH54 0x258
121 #define PMC_SCRATCH54_DATA_SHIFT 8
122 #define PMC_SCRATCH54_ADDR_SHIFT 0
124 #define PMC_SCRATCH55 0x25c
125 #define PMC_SCRATCH55_RESET_TEGRA BIT(31)
126 #define PMC_SCRATCH55_CNTRL_ID_SHIFT 27
127 #define PMC_SCRATCH55_PINMUX_SHIFT 24
128 #define PMC_SCRATCH55_16BITOP BIT(15)
129 #define PMC_SCRATCH55_CHECKSUM_SHIFT 16
130 #define PMC_SCRATCH55_I2CSLV1_SHIFT 0
132 #define GPU_RG_CNTRL 0x2d4
134 /* Tegra186 and later */
135 #define WAKE_AOWAKE_CNTRL(x) (0x000 + ((x) << 2))
136 #define WAKE_AOWAKE_CNTRL_LEVEL (1 << 3)
137 #define WAKE_AOWAKE_MASK_W(x) (0x180 + ((x) << 2))
138 #define WAKE_AOWAKE_MASK_R(x) (0x300 + ((x) << 2))
139 #define WAKE_AOWAKE_STATUS_W(x) (0x30c + ((x) << 2))
140 #define WAKE_AOWAKE_STATUS_R(x) (0x48c + ((x) << 2))
141 #define WAKE_AOWAKE_TIER0_ROUTING(x) (0x4b4 + ((x) << 2))
142 #define WAKE_AOWAKE_TIER1_ROUTING(x) (0x4c0 + ((x) << 2))
143 #define WAKE_AOWAKE_TIER2_ROUTING(x) (0x4cc + ((x) << 2))
145 #define WAKE_AOWAKE_CTRL 0x4f4
146 #define WAKE_AOWAKE_CTRL_INTR_POLARITY BIT(0)
148 struct tegra_powergate {
149 struct generic_pm_domain genpd;
150 struct tegra_pmc *pmc;
153 unsigned int num_clks;
154 struct reset_control *reset;
157 struct tegra_io_pad_soc {
158 enum tegra_io_pad id;
160 unsigned int voltage;
164 struct tegra_pmc_regs {
165 unsigned int scratch0;
166 unsigned int dpd_req;
167 unsigned int dpd_status;
168 unsigned int dpd2_req;
169 unsigned int dpd2_status;
170 unsigned int rst_status;
171 unsigned int rst_source_shift;
172 unsigned int rst_source_mask;
173 unsigned int rst_level_shift;
174 unsigned int rst_level_mask;
177 struct tegra_wake_event {
182 unsigned int instance;
187 #define TEGRA_WAKE_IRQ(_name, _id, _irq) \
193 .instance = UINT_MAX, \
198 #define TEGRA_WAKE_GPIO(_name, _id, _instance, _pin) \
204 .instance = _instance, \
209 struct tegra_pmc_soc {
210 unsigned int num_powergates;
211 const char *const *powergates;
212 unsigned int num_cpu_powergates;
213 const u8 *cpu_powergates;
215 bool has_tsense_reset;
217 bool needs_mbist_war;
218 bool has_impl_33v_pwr;
220 const struct tegra_io_pad_soc *io_pads;
221 unsigned int num_io_pads;
223 const struct pinctrl_pin_desc *pin_descs;
224 unsigned int num_pin_descs;
226 const struct tegra_pmc_regs *regs;
227 void (*init)(struct tegra_pmc *pmc);
228 void (*setup_irq_polarity)(struct tegra_pmc *pmc,
229 struct device_node *np,
232 const char * const *reset_sources;
233 unsigned int num_reset_sources;
234 const char * const *reset_levels;
235 unsigned int num_reset_levels;
237 const struct tegra_wake_event *wake_events;
238 unsigned int num_wake_events;
241 static const char * const tegra186_reset_sources[] = {
259 static const char * const tegra186_reset_levels[] = {
260 "L0", "L1", "L2", "WARM"
263 static const char * const tegra30_reset_sources[] = {
273 * struct tegra_pmc - NVIDIA Tegra PMC
274 * @dev: pointer to PMC device structure
275 * @base: pointer to I/O remapped register region
276 * @clk: pointer to pclk clock
277 * @soc: pointer to SoC data structure
278 * @debugfs: pointer to debugfs entry
279 * @rate: currently configured rate of pclk
280 * @suspend_mode: lowest suspend mode available
281 * @cpu_good_time: CPU power good time (in microseconds)
282 * @cpu_off_time: CPU power off time (in microsecends)
283 * @core_osc_time: core power good OSC time (in microseconds)
284 * @core_pmu_time: core power good PMU time (in microseconds)
285 * @core_off_time: core power off time (in microseconds)
286 * @corereq_high: core power request is active-high
287 * @sysclkreq_high: system clock request is active-high
288 * @combined_req: combined power request for CPU & core
289 * @cpu_pwr_good_en: CPU power good signal is enabled
290 * @lp0_vec_phys: physical base address of the LP0 warm boot code
291 * @lp0_vec_size: size of the LP0 warm boot code
292 * @powergates_available: Bitmap of available power gates
293 * @powergates_lock: mutex for power gate register access
300 void __iomem *scratch;
302 struct dentry *debugfs;
304 const struct tegra_pmc_soc *soc;
308 enum tegra_suspend_mode suspend_mode;
317 bool cpu_pwr_good_en;
320 DECLARE_BITMAP(powergates_available, TEGRA_POWERGATE_MAX);
322 struct mutex powergates_lock;
324 struct pinctrl_dev *pctl_dev;
326 struct irq_domain *domain;
330 static struct tegra_pmc *pmc = &(struct tegra_pmc) {
332 .suspend_mode = TEGRA_SUSPEND_NONE,
335 static inline struct tegra_powergate *
336 to_powergate(struct generic_pm_domain *domain)
338 return container_of(domain, struct tegra_powergate, genpd);
341 static u32 tegra_pmc_readl(unsigned long offset)
343 return readl(pmc->base + offset);
346 static void tegra_pmc_writel(u32 value, unsigned long offset)
348 writel(value, pmc->base + offset);
351 static inline bool tegra_powergate_state(int id)
353 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
354 return (tegra_pmc_readl(GPU_RG_CNTRL) & 0x1) == 0;
356 return (tegra_pmc_readl(PWRGATE_STATUS) & BIT(id)) != 0;
359 static inline bool tegra_powergate_is_valid(int id)
361 return (pmc->soc && pmc->soc->powergates[id]);
364 static inline bool tegra_powergate_is_available(int id)
366 return test_bit(id, pmc->powergates_available);
369 static int tegra_powergate_lookup(struct tegra_pmc *pmc, const char *name)
373 if (!pmc || !pmc->soc || !name)
376 for (i = 0; i < pmc->soc->num_powergates; i++) {
377 if (!tegra_powergate_is_valid(i))
380 if (!strcmp(name, pmc->soc->powergates[i]))
388 * tegra_powergate_set() - set the state of a partition
390 * @new_state: new state of the partition
392 static int tegra_powergate_set(unsigned int id, bool new_state)
397 if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps)
400 mutex_lock(&pmc->powergates_lock);
402 if (tegra_powergate_state(id) == new_state) {
403 mutex_unlock(&pmc->powergates_lock);
407 tegra_pmc_writel(PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE);
409 err = readx_poll_timeout(tegra_powergate_state, id, status,
410 status == new_state, 10, 100000);
412 mutex_unlock(&pmc->powergates_lock);
417 static int __tegra_powergate_remove_clamping(unsigned int id)
421 mutex_lock(&pmc->powergates_lock);
424 * On Tegra124 and later, the clamps for the GPU are controlled by a
425 * separate register (with different semantics).
427 if (id == TEGRA_POWERGATE_3D) {
428 if (pmc->soc->has_gpu_clamps) {
429 tegra_pmc_writel(0, GPU_RG_CNTRL);
435 * Tegra 2 has a bug where PCIE and VDE clamping masks are
436 * swapped relatively to the partition ids
438 if (id == TEGRA_POWERGATE_VDEC)
439 mask = (1 << TEGRA_POWERGATE_PCIE);
440 else if (id == TEGRA_POWERGATE_PCIE)
441 mask = (1 << TEGRA_POWERGATE_VDEC);
445 tegra_pmc_writel(mask, REMOVE_CLAMPING);
448 mutex_unlock(&pmc->powergates_lock);
453 static void tegra_powergate_disable_clocks(struct tegra_powergate *pg)
457 for (i = 0; i < pg->num_clks; i++)
458 clk_disable_unprepare(pg->clks[i]);
461 static int tegra_powergate_enable_clocks(struct tegra_powergate *pg)
466 for (i = 0; i < pg->num_clks; i++) {
467 err = clk_prepare_enable(pg->clks[i]);
476 clk_disable_unprepare(pg->clks[i]);
481 int __weak tegra210_clk_handle_mbist_war(unsigned int id)
486 static int tegra_powergate_power_up(struct tegra_powergate *pg,
491 err = reset_control_assert(pg->reset);
495 usleep_range(10, 20);
497 err = tegra_powergate_set(pg->id, true);
501 usleep_range(10, 20);
503 err = tegra_powergate_enable_clocks(pg);
507 usleep_range(10, 20);
509 err = __tegra_powergate_remove_clamping(pg->id);
513 usleep_range(10, 20);
515 err = reset_control_deassert(pg->reset);
519 usleep_range(10, 20);
521 if (pg->pmc->soc->needs_mbist_war)
522 err = tegra210_clk_handle_mbist_war(pg->id);
527 tegra_powergate_disable_clocks(pg);
532 tegra_powergate_disable_clocks(pg);
533 usleep_range(10, 20);
536 tegra_powergate_set(pg->id, false);
541 static int tegra_powergate_power_down(struct tegra_powergate *pg)
545 err = tegra_powergate_enable_clocks(pg);
549 usleep_range(10, 20);
551 err = reset_control_assert(pg->reset);
555 usleep_range(10, 20);
557 tegra_powergate_disable_clocks(pg);
559 usleep_range(10, 20);
561 err = tegra_powergate_set(pg->id, false);
568 tegra_powergate_enable_clocks(pg);
569 usleep_range(10, 20);
570 reset_control_deassert(pg->reset);
571 usleep_range(10, 20);
574 tegra_powergate_disable_clocks(pg);
579 static int tegra_genpd_power_on(struct generic_pm_domain *domain)
581 struct tegra_powergate *pg = to_powergate(domain);
584 err = tegra_powergate_power_up(pg, true);
586 pr_err("failed to turn on PM domain %s: %d\n", pg->genpd.name,
592 static int tegra_genpd_power_off(struct generic_pm_domain *domain)
594 struct tegra_powergate *pg = to_powergate(domain);
597 err = tegra_powergate_power_down(pg);
599 pr_err("failed to turn off PM domain %s: %d\n",
600 pg->genpd.name, err);
606 * tegra_powergate_power_on() - power on partition
609 int tegra_powergate_power_on(unsigned int id)
611 if (!tegra_powergate_is_available(id))
614 return tegra_powergate_set(id, true);
618 * tegra_powergate_power_off() - power off partition
621 int tegra_powergate_power_off(unsigned int id)
623 if (!tegra_powergate_is_available(id))
626 return tegra_powergate_set(id, false);
628 EXPORT_SYMBOL(tegra_powergate_power_off);
631 * tegra_powergate_is_powered() - check if partition is powered
634 int tegra_powergate_is_powered(unsigned int id)
636 if (!tegra_powergate_is_valid(id))
639 return tegra_powergate_state(id);
643 * tegra_powergate_remove_clamping() - remove power clamps for partition
646 int tegra_powergate_remove_clamping(unsigned int id)
648 if (!tegra_powergate_is_available(id))
651 return __tegra_powergate_remove_clamping(id);
653 EXPORT_SYMBOL(tegra_powergate_remove_clamping);
656 * tegra_powergate_sequence_power_up() - power up partition
658 * @clk: clock for partition
659 * @rst: reset for partition
661 * Must be called with clk disabled, and returns with clk enabled.
663 int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk,
664 struct reset_control *rst)
666 struct tegra_powergate *pg;
669 if (!tegra_powergate_is_available(id))
672 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
682 err = tegra_powergate_power_up(pg, false);
684 pr_err("failed to turn on partition %d: %d\n", id, err);
690 EXPORT_SYMBOL(tegra_powergate_sequence_power_up);
693 * tegra_get_cpu_powergate_id() - convert from CPU ID to partition ID
694 * @cpuid: CPU partition ID
696 * Returns the partition ID corresponding to the CPU partition ID or a
697 * negative error code on failure.
699 static int tegra_get_cpu_powergate_id(unsigned int cpuid)
701 if (pmc->soc && cpuid < pmc->soc->num_cpu_powergates)
702 return pmc->soc->cpu_powergates[cpuid];
708 * tegra_pmc_cpu_is_powered() - check if CPU partition is powered
709 * @cpuid: CPU partition ID
711 bool tegra_pmc_cpu_is_powered(unsigned int cpuid)
715 id = tegra_get_cpu_powergate_id(cpuid);
719 return tegra_powergate_is_powered(id);
723 * tegra_pmc_cpu_power_on() - power on CPU partition
724 * @cpuid: CPU partition ID
726 int tegra_pmc_cpu_power_on(unsigned int cpuid)
730 id = tegra_get_cpu_powergate_id(cpuid);
734 return tegra_powergate_set(id, true);
738 * tegra_pmc_cpu_remove_clamping() - remove power clamps for CPU partition
739 * @cpuid: CPU partition ID
741 int tegra_pmc_cpu_remove_clamping(unsigned int cpuid)
745 id = tegra_get_cpu_powergate_id(cpuid);
749 return tegra_powergate_remove_clamping(id);
752 static int tegra_pmc_restart_notify(struct notifier_block *this,
753 unsigned long action, void *data)
755 const char *cmd = data;
758 value = readl(pmc->scratch + pmc->soc->regs->scratch0);
759 value &= ~PMC_SCRATCH0_MODE_MASK;
762 if (strcmp(cmd, "recovery") == 0)
763 value |= PMC_SCRATCH0_MODE_RECOVERY;
765 if (strcmp(cmd, "bootloader") == 0)
766 value |= PMC_SCRATCH0_MODE_BOOTLOADER;
768 if (strcmp(cmd, "forced-recovery") == 0)
769 value |= PMC_SCRATCH0_MODE_RCM;
772 writel(value, pmc->scratch + pmc->soc->regs->scratch0);
774 /* reset everything but PMC_SCRATCH0 and PMC_RST_STATUS */
775 value = tegra_pmc_readl(PMC_CNTRL);
776 value |= PMC_CNTRL_MAIN_RST;
777 tegra_pmc_writel(value, PMC_CNTRL);
782 static struct notifier_block tegra_pmc_restart_handler = {
783 .notifier_call = tegra_pmc_restart_notify,
787 static int powergate_show(struct seq_file *s, void *data)
792 seq_printf(s, " powergate powered\n");
793 seq_printf(s, "------------------\n");
795 for (i = 0; i < pmc->soc->num_powergates; i++) {
796 status = tegra_powergate_is_powered(i);
800 seq_printf(s, " %9s %7s\n", pmc->soc->powergates[i],
801 status ? "yes" : "no");
807 DEFINE_SHOW_ATTRIBUTE(powergate);
809 static int tegra_powergate_debugfs_init(void)
811 pmc->debugfs = debugfs_create_file("powergate", S_IRUGO, NULL, NULL,
819 static int tegra_powergate_of_get_clks(struct tegra_powergate *pg,
820 struct device_node *np)
823 unsigned int i, count;
826 count = of_clk_get_parent_count(np);
830 pg->clks = kcalloc(count, sizeof(clk), GFP_KERNEL);
834 for (i = 0; i < count; i++) {
835 pg->clks[i] = of_clk_get(np, i);
836 if (IS_ERR(pg->clks[i])) {
837 err = PTR_ERR(pg->clks[i]);
842 pg->num_clks = count;
848 clk_put(pg->clks[i]);
855 static int tegra_powergate_of_get_resets(struct tegra_powergate *pg,
856 struct device_node *np, bool off)
860 pg->reset = of_reset_control_array_get_exclusive(np);
861 if (IS_ERR(pg->reset)) {
862 err = PTR_ERR(pg->reset);
863 pr_err("failed to get device resets: %d\n", err);
868 err = reset_control_assert(pg->reset);
870 err = reset_control_deassert(pg->reset);
873 reset_control_put(pg->reset);
878 static void tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np)
880 struct tegra_powergate *pg;
884 pg = kzalloc(sizeof(*pg), GFP_KERNEL);
888 id = tegra_powergate_lookup(pmc, np->name);
890 pr_err("powergate lookup failed for %pOFn: %d\n", np, id);
895 * Clear the bit for this powergate so it cannot be managed
896 * directly via the legacy APIs for controlling powergates.
898 clear_bit(id, pmc->powergates_available);
901 pg->genpd.name = np->name;
902 pg->genpd.power_off = tegra_genpd_power_off;
903 pg->genpd.power_on = tegra_genpd_power_on;
906 off = !tegra_powergate_is_powered(pg->id);
908 err = tegra_powergate_of_get_clks(pg, np);
910 pr_err("failed to get clocks for %pOFn: %d\n", np, err);
914 err = tegra_powergate_of_get_resets(pg, np, off);
916 pr_err("failed to get resets for %pOFn: %d\n", np, err);
920 if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) {
922 WARN_ON(tegra_powergate_power_up(pg, true));
927 err = pm_genpd_init(&pg->genpd, NULL, off);
929 pr_err("failed to initialise PM domain %pOFn: %d\n", np,
934 err = of_genpd_add_provider_simple(np, &pg->genpd);
936 pr_err("failed to add PM domain provider for %pOFn: %d\n",
941 pr_debug("added PM domain %s\n", pg->genpd.name);
946 pm_genpd_remove(&pg->genpd);
949 reset_control_put(pg->reset);
952 while (pg->num_clks--)
953 clk_put(pg->clks[pg->num_clks]);
958 set_bit(id, pmc->powergates_available);
964 static void tegra_powergate_init(struct tegra_pmc *pmc,
965 struct device_node *parent)
967 struct device_node *np, *child;
970 /* Create a bitmap of the available and valid partitions */
971 for (i = 0; i < pmc->soc->num_powergates; i++)
972 if (pmc->soc->powergates[i])
973 set_bit(i, pmc->powergates_available);
975 np = of_get_child_by_name(parent, "powergates");
979 for_each_child_of_node(np, child)
980 tegra_powergate_add(pmc, child);
985 static const struct tegra_io_pad_soc *
986 tegra_io_pad_find(struct tegra_pmc *pmc, enum tegra_io_pad id)
990 for (i = 0; i < pmc->soc->num_io_pads; i++)
991 if (pmc->soc->io_pads[i].id == id)
992 return &pmc->soc->io_pads[i];
997 static int tegra_io_pad_get_dpd_register_bit(enum tegra_io_pad id,
998 unsigned long *request,
999 unsigned long *status,
1002 const struct tegra_io_pad_soc *pad;
1004 pad = tegra_io_pad_find(pmc, id);
1006 pr_err("invalid I/O pad ID %u\n", id);
1010 if (pad->dpd == UINT_MAX)
1013 *mask = BIT(pad->dpd % 32);
1015 if (pad->dpd < 32) {
1016 *status = pmc->soc->regs->dpd_status;
1017 *request = pmc->soc->regs->dpd_req;
1019 *status = pmc->soc->regs->dpd2_status;
1020 *request = pmc->soc->regs->dpd2_req;
1026 static int tegra_io_pad_prepare(enum tegra_io_pad id, unsigned long *request,
1027 unsigned long *status, u32 *mask)
1029 unsigned long rate, value;
1032 err = tegra_io_pad_get_dpd_register_bit(id, request, status, mask);
1037 rate = clk_get_rate(pmc->clk);
1039 pr_err("failed to get clock rate\n");
1043 tegra_pmc_writel(DPD_SAMPLE_ENABLE, DPD_SAMPLE);
1045 /* must be at least 200 ns, in APB (PCLK) clock cycles */
1046 value = DIV_ROUND_UP(1000000000, rate);
1047 value = DIV_ROUND_UP(200, value);
1048 tegra_pmc_writel(value, SEL_DPD_TIM);
1054 static int tegra_io_pad_poll(unsigned long offset, u32 mask,
1055 u32 val, unsigned long timeout)
1059 timeout = jiffies + msecs_to_jiffies(timeout);
1061 while (time_after(timeout, jiffies)) {
1062 value = tegra_pmc_readl(offset);
1063 if ((value & mask) == val)
1066 usleep_range(250, 1000);
1072 static void tegra_io_pad_unprepare(void)
1075 tegra_pmc_writel(DPD_SAMPLE_DISABLE, DPD_SAMPLE);
1079 * tegra_io_pad_power_enable() - enable power to I/O pad
1080 * @id: Tegra I/O pad ID for which to enable power
1082 * Returns: 0 on success or a negative error code on failure.
1084 int tegra_io_pad_power_enable(enum tegra_io_pad id)
1086 unsigned long request, status;
1090 mutex_lock(&pmc->powergates_lock);
1092 err = tegra_io_pad_prepare(id, &request, &status, &mask);
1094 pr_err("failed to prepare I/O pad: %d\n", err);
1098 tegra_pmc_writel(IO_DPD_REQ_CODE_OFF | mask, request);
1100 err = tegra_io_pad_poll(status, mask, 0, 250);
1102 pr_err("failed to enable I/O pad: %d\n", err);
1106 tegra_io_pad_unprepare();
1109 mutex_unlock(&pmc->powergates_lock);
1112 EXPORT_SYMBOL(tegra_io_pad_power_enable);
1115 * tegra_io_pad_power_disable() - disable power to I/O pad
1116 * @id: Tegra I/O pad ID for which to disable power
1118 * Returns: 0 on success or a negative error code on failure.
1120 int tegra_io_pad_power_disable(enum tegra_io_pad id)
1122 unsigned long request, status;
1126 mutex_lock(&pmc->powergates_lock);
1128 err = tegra_io_pad_prepare(id, &request, &status, &mask);
1130 pr_err("failed to prepare I/O pad: %d\n", err);
1134 tegra_pmc_writel(IO_DPD_REQ_CODE_ON | mask, request);
1136 err = tegra_io_pad_poll(status, mask, mask, 250);
1138 pr_err("failed to disable I/O pad: %d\n", err);
1142 tegra_io_pad_unprepare();
1145 mutex_unlock(&pmc->powergates_lock);
1148 EXPORT_SYMBOL(tegra_io_pad_power_disable);
1150 static int tegra_io_pad_is_powered(enum tegra_io_pad id)
1152 unsigned long request, status;
1156 err = tegra_io_pad_get_dpd_register_bit(id, &request, &status, &mask);
1160 value = tegra_pmc_readl(status);
1162 return !(value & mask);
1165 static int tegra_io_pad_set_voltage(enum tegra_io_pad id, int voltage)
1167 const struct tegra_io_pad_soc *pad;
1170 pad = tegra_io_pad_find(pmc, id);
1174 if (pad->voltage == UINT_MAX)
1177 mutex_lock(&pmc->powergates_lock);
1179 if (pmc->soc->has_impl_33v_pwr) {
1180 value = tegra_pmc_readl(PMC_IMPL_E_33V_PWR);
1182 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1183 value &= ~BIT(pad->voltage);
1185 value |= BIT(pad->voltage);
1187 tegra_pmc_writel(value, PMC_IMPL_E_33V_PWR);
1189 /* write-enable PMC_PWR_DET_VALUE[pad->voltage] */
1190 value = tegra_pmc_readl(PMC_PWR_DET);
1191 value |= BIT(pad->voltage);
1192 tegra_pmc_writel(value, PMC_PWR_DET);
1194 /* update I/O voltage */
1195 value = tegra_pmc_readl(PMC_PWR_DET_VALUE);
1197 if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8)
1198 value &= ~BIT(pad->voltage);
1200 value |= BIT(pad->voltage);
1202 tegra_pmc_writel(value, PMC_PWR_DET_VALUE);
1205 mutex_unlock(&pmc->powergates_lock);
1207 usleep_range(100, 250);
1212 static int tegra_io_pad_get_voltage(enum tegra_io_pad id)
1214 const struct tegra_io_pad_soc *pad;
1217 pad = tegra_io_pad_find(pmc, id);
1221 if (pad->voltage == UINT_MAX)
1224 if (pmc->soc->has_impl_33v_pwr)
1225 value = tegra_pmc_readl(PMC_IMPL_E_33V_PWR);
1227 value = tegra_pmc_readl(PMC_PWR_DET_VALUE);
1229 if ((value & BIT(pad->voltage)) == 0)
1230 return TEGRA_IO_PAD_VOLTAGE_1V8;
1232 return TEGRA_IO_PAD_VOLTAGE_3V3;
1236 * tegra_io_rail_power_on() - enable power to I/O rail
1237 * @id: Tegra I/O pad ID for which to enable power
1239 * See also: tegra_io_pad_power_enable()
1241 int tegra_io_rail_power_on(unsigned int id)
1243 return tegra_io_pad_power_enable(id);
1245 EXPORT_SYMBOL(tegra_io_rail_power_on);
1248 * tegra_io_rail_power_off() - disable power to I/O rail
1249 * @id: Tegra I/O pad ID for which to disable power
1251 * See also: tegra_io_pad_power_disable()
1253 int tegra_io_rail_power_off(unsigned int id)
1255 return tegra_io_pad_power_disable(id);
1257 EXPORT_SYMBOL(tegra_io_rail_power_off);
1259 #ifdef CONFIG_PM_SLEEP
1260 enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void)
1262 return pmc->suspend_mode;
1265 void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode)
1267 if (mode < TEGRA_SUSPEND_NONE || mode >= TEGRA_MAX_SUSPEND_MODE)
1270 pmc->suspend_mode = mode;
1273 void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode)
1275 unsigned long long rate = 0;
1279 case TEGRA_SUSPEND_LP1:
1283 case TEGRA_SUSPEND_LP2:
1284 rate = clk_get_rate(pmc->clk);
1291 if (WARN_ON_ONCE(rate == 0))
1294 if (rate != pmc->rate) {
1297 ticks = pmc->cpu_good_time * rate + USEC_PER_SEC - 1;
1298 do_div(ticks, USEC_PER_SEC);
1299 tegra_pmc_writel(ticks, PMC_CPUPWRGOOD_TIMER);
1301 ticks = pmc->cpu_off_time * rate + USEC_PER_SEC - 1;
1302 do_div(ticks, USEC_PER_SEC);
1303 tegra_pmc_writel(ticks, PMC_CPUPWROFF_TIMER);
1310 value = tegra_pmc_readl(PMC_CNTRL);
1311 value &= ~PMC_CNTRL_SIDE_EFFECT_LP0;
1312 value |= PMC_CNTRL_CPU_PWRREQ_OE;
1313 tegra_pmc_writel(value, PMC_CNTRL);
1317 static int tegra_pmc_parse_dt(struct tegra_pmc *pmc, struct device_node *np)
1319 u32 value, values[2];
1321 if (of_property_read_u32(np, "nvidia,suspend-mode", &value)) {
1325 pmc->suspend_mode = TEGRA_SUSPEND_LP0;
1329 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1333 pmc->suspend_mode = TEGRA_SUSPEND_LP2;
1337 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1342 pmc->suspend_mode = tegra_pm_validate_suspend_mode(pmc->suspend_mode);
1344 if (of_property_read_u32(np, "nvidia,cpu-pwr-good-time", &value))
1345 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1347 pmc->cpu_good_time = value;
1349 if (of_property_read_u32(np, "nvidia,cpu-pwr-off-time", &value))
1350 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1352 pmc->cpu_off_time = value;
1354 if (of_property_read_u32_array(np, "nvidia,core-pwr-good-time",
1355 values, ARRAY_SIZE(values)))
1356 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1358 pmc->core_osc_time = values[0];
1359 pmc->core_pmu_time = values[1];
1361 if (of_property_read_u32(np, "nvidia,core-pwr-off-time", &value))
1362 pmc->suspend_mode = TEGRA_SUSPEND_NONE;
1364 pmc->core_off_time = value;
1366 pmc->corereq_high = of_property_read_bool(np,
1367 "nvidia,core-power-req-active-high");
1369 pmc->sysclkreq_high = of_property_read_bool(np,
1370 "nvidia,sys-clock-req-active-high");
1372 pmc->combined_req = of_property_read_bool(np,
1373 "nvidia,combined-power-req");
1375 pmc->cpu_pwr_good_en = of_property_read_bool(np,
1376 "nvidia,cpu-pwr-good-en");
1378 if (of_property_read_u32_array(np, "nvidia,lp0-vec", values,
1379 ARRAY_SIZE(values)))
1380 if (pmc->suspend_mode == TEGRA_SUSPEND_LP0)
1381 pmc->suspend_mode = TEGRA_SUSPEND_LP1;
1383 pmc->lp0_vec_phys = values[0];
1384 pmc->lp0_vec_size = values[1];
1389 static void tegra_pmc_init(struct tegra_pmc *pmc)
1392 pmc->soc->init(pmc);
1395 static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc)
1397 static const char disabled[] = "emergency thermal reset disabled";
1398 u32 pmu_addr, ctrl_id, reg_addr, reg_data, pinmux;
1399 struct device *dev = pmc->dev;
1400 struct device_node *np;
1401 u32 value, checksum;
1403 if (!pmc->soc->has_tsense_reset)
1406 np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip");
1408 dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled);
1412 if (of_property_read_u32(np, "nvidia,i2c-controller-id", &ctrl_id)) {
1413 dev_err(dev, "I2C controller ID missing, %s.\n", disabled);
1417 if (of_property_read_u32(np, "nvidia,bus-addr", &pmu_addr)) {
1418 dev_err(dev, "nvidia,bus-addr missing, %s.\n", disabled);
1422 if (of_property_read_u32(np, "nvidia,reg-addr", ®_addr)) {
1423 dev_err(dev, "nvidia,reg-addr missing, %s.\n", disabled);
1427 if (of_property_read_u32(np, "nvidia,reg-data", ®_data)) {
1428 dev_err(dev, "nvidia,reg-data missing, %s.\n", disabled);
1432 if (of_property_read_u32(np, "nvidia,pinmux-id", &pinmux))
1435 value = tegra_pmc_readl(PMC_SENSOR_CTRL);
1436 value |= PMC_SENSOR_CTRL_SCRATCH_WRITE;
1437 tegra_pmc_writel(value, PMC_SENSOR_CTRL);
1439 value = (reg_data << PMC_SCRATCH54_DATA_SHIFT) |
1440 (reg_addr << PMC_SCRATCH54_ADDR_SHIFT);
1441 tegra_pmc_writel(value, PMC_SCRATCH54);
1443 value = PMC_SCRATCH55_RESET_TEGRA;
1444 value |= ctrl_id << PMC_SCRATCH55_CNTRL_ID_SHIFT;
1445 value |= pinmux << PMC_SCRATCH55_PINMUX_SHIFT;
1446 value |= pmu_addr << PMC_SCRATCH55_I2CSLV1_SHIFT;
1449 * Calculate checksum of SCRATCH54, SCRATCH55 fields. Bits 23:16 will
1450 * contain the checksum and are currently zero, so they are not added.
1452 checksum = reg_addr + reg_data + (value & 0xff) + ((value >> 8) & 0xff)
1453 + ((value >> 24) & 0xff);
1455 checksum = 0x100 - checksum;
1457 value |= checksum << PMC_SCRATCH55_CHECKSUM_SHIFT;
1459 tegra_pmc_writel(value, PMC_SCRATCH55);
1461 value = tegra_pmc_readl(PMC_SENSOR_CTRL);
1462 value |= PMC_SENSOR_CTRL_ENABLE_RST;
1463 tegra_pmc_writel(value, PMC_SENSOR_CTRL);
1465 dev_info(pmc->dev, "emergency thermal reset enabled\n");
1471 static int tegra_io_pad_pinctrl_get_groups_count(struct pinctrl_dev *pctl_dev)
1473 return pmc->soc->num_io_pads;
1476 static const char *tegra_io_pad_pinctrl_get_group_name(
1477 struct pinctrl_dev *pctl, unsigned int group)
1479 return pmc->soc->io_pads[group].name;
1482 static int tegra_io_pad_pinctrl_get_group_pins(struct pinctrl_dev *pctl_dev,
1484 const unsigned int **pins,
1485 unsigned int *num_pins)
1487 *pins = &pmc->soc->io_pads[group].id;
1492 static const struct pinctrl_ops tegra_io_pad_pinctrl_ops = {
1493 .get_groups_count = tegra_io_pad_pinctrl_get_groups_count,
1494 .get_group_name = tegra_io_pad_pinctrl_get_group_name,
1495 .get_group_pins = tegra_io_pad_pinctrl_get_group_pins,
1496 .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
1497 .dt_free_map = pinconf_generic_dt_free_map,
1500 static int tegra_io_pad_pinconf_get(struct pinctrl_dev *pctl_dev,
1501 unsigned int pin, unsigned long *config)
1503 const struct tegra_io_pad_soc *pad = tegra_io_pad_find(pmc, pin);
1504 enum pin_config_param param = pinconf_to_config_param(*config);
1512 case PIN_CONFIG_POWER_SOURCE:
1513 ret = tegra_io_pad_get_voltage(pad->id);
1518 case PIN_CONFIG_LOW_POWER_MODE:
1519 ret = tegra_io_pad_is_powered(pad->id);
1528 *config = pinconf_to_config_packed(param, arg);
1533 static int tegra_io_pad_pinconf_set(struct pinctrl_dev *pctl_dev,
1534 unsigned int pin, unsigned long *configs,
1535 unsigned int num_configs)
1537 const struct tegra_io_pad_soc *pad = tegra_io_pad_find(pmc, pin);
1538 enum pin_config_param param;
1546 for (i = 0; i < num_configs; ++i) {
1547 param = pinconf_to_config_param(configs[i]);
1548 arg = pinconf_to_config_argument(configs[i]);
1551 case PIN_CONFIG_LOW_POWER_MODE:
1553 err = tegra_io_pad_power_disable(pad->id);
1555 err = tegra_io_pad_power_enable(pad->id);
1559 case PIN_CONFIG_POWER_SOURCE:
1560 if (arg != TEGRA_IO_PAD_VOLTAGE_1V8 &&
1561 arg != TEGRA_IO_PAD_VOLTAGE_3V3)
1563 err = tegra_io_pad_set_voltage(pad->id, arg);
1575 static const struct pinconf_ops tegra_io_pad_pinconf_ops = {
1576 .pin_config_get = tegra_io_pad_pinconf_get,
1577 .pin_config_set = tegra_io_pad_pinconf_set,
1581 static struct pinctrl_desc tegra_pmc_pctl_desc = {
1582 .pctlops = &tegra_io_pad_pinctrl_ops,
1583 .confops = &tegra_io_pad_pinconf_ops,
1586 static int tegra_pmc_pinctrl_init(struct tegra_pmc *pmc)
1590 if (!pmc->soc->num_pin_descs)
1593 tegra_pmc_pctl_desc.name = dev_name(pmc->dev);
1594 tegra_pmc_pctl_desc.pins = pmc->soc->pin_descs;
1595 tegra_pmc_pctl_desc.npins = pmc->soc->num_pin_descs;
1597 pmc->pctl_dev = devm_pinctrl_register(pmc->dev, &tegra_pmc_pctl_desc,
1599 if (IS_ERR(pmc->pctl_dev)) {
1600 err = PTR_ERR(pmc->pctl_dev);
1601 dev_err(pmc->dev, "unable to register pinctrl, %d\n", err);
1607 static ssize_t reset_reason_show(struct device *dev,
1608 struct device_attribute *attr, char *buf)
1612 value = tegra_pmc_readl(pmc->soc->regs->rst_status);
1613 rst_src = (value & pmc->soc->regs->rst_source_mask) >>
1614 pmc->soc->regs->rst_source_shift;
1616 return sprintf(buf, "%s\n", pmc->soc->reset_sources[rst_src]);
1619 static DEVICE_ATTR_RO(reset_reason);
1621 static ssize_t reset_level_show(struct device *dev,
1622 struct device_attribute *attr, char *buf)
1626 value = tegra_pmc_readl(pmc->soc->regs->rst_status);
1627 rst_lvl = (value & pmc->soc->regs->rst_level_mask) >>
1628 pmc->soc->regs->rst_level_shift;
1630 return sprintf(buf, "%s\n", pmc->soc->reset_levels[rst_lvl]);
1633 static DEVICE_ATTR_RO(reset_level);
1635 static void tegra_pmc_reset_sysfs_init(struct tegra_pmc *pmc)
1637 struct device *dev = pmc->dev;
1640 if (pmc->soc->reset_sources) {
1641 err = device_create_file(dev, &dev_attr_reset_reason);
1644 "failed to create attr \"reset_reason\": %d\n",
1648 if (pmc->soc->reset_levels) {
1649 err = device_create_file(dev, &dev_attr_reset_level);
1652 "failed to create attr \"reset_level\": %d\n",
1657 static int tegra_pmc_irq_translate(struct irq_domain *domain,
1658 struct irq_fwspec *fwspec,
1659 unsigned long *hwirq,
1662 if (WARN_ON(fwspec->param_count < 2))
1665 *hwirq = fwspec->param[0];
1666 *type = fwspec->param[1];
1671 static int tegra_pmc_irq_alloc(struct irq_domain *domain, unsigned int virq,
1672 unsigned int num_irqs, void *data)
1674 struct tegra_pmc *pmc = domain->host_data;
1675 const struct tegra_pmc_soc *soc = pmc->soc;
1676 struct irq_fwspec *fwspec = data;
1680 for (i = 0; i < soc->num_wake_events; i++) {
1681 const struct tegra_wake_event *event = &soc->wake_events[i];
1683 if (fwspec->param_count == 2) {
1684 struct irq_fwspec spec;
1686 if (event->id != fwspec->param[0])
1689 err = irq_domain_set_hwirq_and_chip(domain, virq,
1695 spec.fwnode = &pmc->dev->of_node->fwnode;
1696 spec.param_count = 3;
1697 spec.param[0] = GIC_SPI;
1698 spec.param[1] = event->irq;
1699 spec.param[2] = fwspec->param[1];
1701 err = irq_domain_alloc_irqs_parent(domain, virq,
1707 if (fwspec->param_count == 3) {
1708 if (event->gpio.instance != fwspec->param[0] ||
1709 event->gpio.pin != fwspec->param[1])
1712 err = irq_domain_set_hwirq_and_chip(domain, virq,
1720 if (i == soc->num_wake_events)
1721 err = irq_domain_set_hwirq_and_chip(domain, virq, ULONG_MAX,
1727 static const struct irq_domain_ops tegra_pmc_irq_domain_ops = {
1728 .translate = tegra_pmc_irq_translate,
1729 .alloc = tegra_pmc_irq_alloc,
1732 static int tegra_pmc_irq_set_wake(struct irq_data *data, unsigned int on)
1734 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
1735 unsigned int offset, bit;
1738 offset = data->hwirq / 32;
1739 bit = data->hwirq % 32;
1741 /* clear wake status */
1742 writel(0x1, pmc->wake + WAKE_AOWAKE_STATUS_W(data->hwirq));
1744 /* route wake to tier 2 */
1745 value = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
1748 value &= ~(1 << bit);
1752 writel(value, pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset));
1754 /* enable wakeup event */
1755 writel(!!on, pmc->wake + WAKE_AOWAKE_MASK_W(data->hwirq));
1760 static int tegra_pmc_irq_set_type(struct irq_data *data, unsigned int type)
1762 struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data);
1765 if (data->hwirq == ULONG_MAX)
1768 value = readl(pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
1771 case IRQ_TYPE_EDGE_RISING:
1772 case IRQ_TYPE_LEVEL_HIGH:
1773 value |= WAKE_AOWAKE_CNTRL_LEVEL;
1776 case IRQ_TYPE_EDGE_FALLING:
1777 case IRQ_TYPE_LEVEL_LOW:
1778 value &= ~WAKE_AOWAKE_CNTRL_LEVEL;
1781 case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING:
1782 value ^= WAKE_AOWAKE_CNTRL_LEVEL;
1789 writel(value, pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq));
1794 static int tegra_pmc_irq_init(struct tegra_pmc *pmc)
1796 struct irq_domain *parent = NULL;
1797 struct device_node *np;
1799 np = of_irq_find_parent(pmc->dev->of_node);
1801 parent = irq_find_host(np);
1808 pmc->irq.name = dev_name(pmc->dev);
1809 pmc->irq.irq_mask = irq_chip_mask_parent;
1810 pmc->irq.irq_unmask = irq_chip_unmask_parent;
1811 pmc->irq.irq_eoi = irq_chip_eoi_parent;
1812 pmc->irq.irq_set_affinity = irq_chip_set_affinity_parent;
1813 pmc->irq.irq_set_type = tegra_pmc_irq_set_type;
1814 pmc->irq.irq_set_wake = tegra_pmc_irq_set_wake;
1816 pmc->domain = irq_domain_add_hierarchy(parent, 0, 96, pmc->dev->of_node,
1817 &tegra_pmc_irq_domain_ops, pmc);
1819 dev_err(pmc->dev, "failed to allocate domain\n");
1826 static int tegra_pmc_probe(struct platform_device *pdev)
1829 struct resource *res;
1833 * Early initialisation should have configured an initial
1834 * register mapping and setup the soc data pointer. If these
1835 * are not valid then something went badly wrong!
1837 if (WARN_ON(!pmc->base || !pmc->soc))
1840 err = tegra_pmc_parse_dt(pmc, pdev->dev.of_node);
1844 /* take over the memory region from the early initialization */
1845 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1846 base = devm_ioremap_resource(&pdev->dev, res);
1848 return PTR_ERR(base);
1850 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wake");
1852 pmc->wake = devm_ioremap_resource(&pdev->dev, res);
1853 if (IS_ERR(pmc->wake))
1854 return PTR_ERR(pmc->wake);
1859 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aotag");
1861 pmc->aotag = devm_ioremap_resource(&pdev->dev, res);
1862 if (IS_ERR(pmc->aotag))
1863 return PTR_ERR(pmc->aotag);
1868 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scratch");
1870 pmc->scratch = devm_ioremap_resource(&pdev->dev, res);
1871 if (IS_ERR(pmc->scratch))
1872 return PTR_ERR(pmc->scratch);
1874 pmc->scratch = base;
1877 pmc->clk = devm_clk_get(&pdev->dev, "pclk");
1878 if (IS_ERR(pmc->clk)) {
1879 err = PTR_ERR(pmc->clk);
1881 if (err != -ENOENT) {
1882 dev_err(&pdev->dev, "failed to get pclk: %d\n", err);
1889 pmc->dev = &pdev->dev;
1891 tegra_pmc_init(pmc);
1893 tegra_pmc_init_tsense_reset(pmc);
1895 tegra_pmc_reset_sysfs_init(pmc);
1897 if (IS_ENABLED(CONFIG_DEBUG_FS)) {
1898 err = tegra_powergate_debugfs_init();
1903 err = register_restart_handler(&tegra_pmc_restart_handler);
1905 dev_err(&pdev->dev, "unable to register restart handler, %d\n",
1907 goto cleanup_debugfs;
1910 err = tegra_pmc_pinctrl_init(pmc);
1912 goto cleanup_restart_handler;
1914 err = tegra_pmc_irq_init(pmc);
1916 goto cleanup_restart_handler;
1918 mutex_lock(&pmc->powergates_lock);
1921 mutex_unlock(&pmc->powergates_lock);
1925 cleanup_restart_handler:
1926 unregister_restart_handler(&tegra_pmc_restart_handler);
1928 debugfs_remove(pmc->debugfs);
1932 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
1933 static int tegra_pmc_suspend(struct device *dev)
1935 tegra_pmc_writel(virt_to_phys(tegra_resume), PMC_SCRATCH41);
1940 static int tegra_pmc_resume(struct device *dev)
1942 tegra_pmc_writel(0x0, PMC_SCRATCH41);
1947 static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume);
1951 static const char * const tegra20_powergates[] = {
1952 [TEGRA_POWERGATE_CPU] = "cpu",
1953 [TEGRA_POWERGATE_3D] = "3d",
1954 [TEGRA_POWERGATE_VENC] = "venc",
1955 [TEGRA_POWERGATE_VDEC] = "vdec",
1956 [TEGRA_POWERGATE_PCIE] = "pcie",
1957 [TEGRA_POWERGATE_L2] = "l2",
1958 [TEGRA_POWERGATE_MPE] = "mpe",
1961 static const struct tegra_pmc_regs tegra20_pmc_regs = {
1964 .dpd_status = 0x1bc,
1966 .dpd2_status = 0x1c4,
1967 .rst_status = 0x1b4,
1968 .rst_source_shift = 0x0,
1969 .rst_source_mask = 0x7,
1970 .rst_level_shift = 0x0,
1971 .rst_level_mask = 0x0,
1974 static void tegra20_pmc_init(struct tegra_pmc *pmc)
1978 /* Always enable CPU power request */
1979 value = tegra_pmc_readl(PMC_CNTRL);
1980 value |= PMC_CNTRL_CPU_PWRREQ_OE;
1981 tegra_pmc_writel(value, PMC_CNTRL);
1983 value = tegra_pmc_readl(PMC_CNTRL);
1985 if (pmc->sysclkreq_high)
1986 value &= ~PMC_CNTRL_SYSCLK_POLARITY;
1988 value |= PMC_CNTRL_SYSCLK_POLARITY;
1990 /* configure the output polarity while the request is tristated */
1991 tegra_pmc_writel(value, PMC_CNTRL);
1993 /* now enable the request */
1994 value = tegra_pmc_readl(PMC_CNTRL);
1995 value |= PMC_CNTRL_SYSCLK_OE;
1996 tegra_pmc_writel(value, PMC_CNTRL);
1999 static void tegra20_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
2000 struct device_node *np,
2005 value = tegra_pmc_readl(PMC_CNTRL);
2008 value |= PMC_CNTRL_INTR_POLARITY;
2010 value &= ~PMC_CNTRL_INTR_POLARITY;
2012 tegra_pmc_writel(value, PMC_CNTRL);
2015 static const struct tegra_pmc_soc tegra20_pmc_soc = {
2016 .num_powergates = ARRAY_SIZE(tegra20_powergates),
2017 .powergates = tegra20_powergates,
2018 .num_cpu_powergates = 0,
2019 .cpu_powergates = NULL,
2020 .has_tsense_reset = false,
2021 .has_gpu_clamps = false,
2026 .regs = &tegra20_pmc_regs,
2027 .init = tegra20_pmc_init,
2028 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
2029 .reset_sources = NULL,
2030 .num_reset_sources = 0,
2031 .reset_levels = NULL,
2032 .num_reset_levels = 0,
2035 static const char * const tegra30_powergates[] = {
2036 [TEGRA_POWERGATE_CPU] = "cpu0",
2037 [TEGRA_POWERGATE_3D] = "3d0",
2038 [TEGRA_POWERGATE_VENC] = "venc",
2039 [TEGRA_POWERGATE_VDEC] = "vdec",
2040 [TEGRA_POWERGATE_PCIE] = "pcie",
2041 [TEGRA_POWERGATE_L2] = "l2",
2042 [TEGRA_POWERGATE_MPE] = "mpe",
2043 [TEGRA_POWERGATE_HEG] = "heg",
2044 [TEGRA_POWERGATE_SATA] = "sata",
2045 [TEGRA_POWERGATE_CPU1] = "cpu1",
2046 [TEGRA_POWERGATE_CPU2] = "cpu2",
2047 [TEGRA_POWERGATE_CPU3] = "cpu3",
2048 [TEGRA_POWERGATE_CELP] = "celp",
2049 [TEGRA_POWERGATE_3D1] = "3d1",
2052 static const u8 tegra30_cpu_powergates[] = {
2053 TEGRA_POWERGATE_CPU,
2054 TEGRA_POWERGATE_CPU1,
2055 TEGRA_POWERGATE_CPU2,
2056 TEGRA_POWERGATE_CPU3,
2059 static const struct tegra_pmc_soc tegra30_pmc_soc = {
2060 .num_powergates = ARRAY_SIZE(tegra30_powergates),
2061 .powergates = tegra30_powergates,
2062 .num_cpu_powergates = ARRAY_SIZE(tegra30_cpu_powergates),
2063 .cpu_powergates = tegra30_cpu_powergates,
2064 .has_tsense_reset = true,
2065 .has_gpu_clamps = false,
2066 .has_impl_33v_pwr = false,
2071 .regs = &tegra20_pmc_regs,
2072 .init = tegra20_pmc_init,
2073 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
2074 .reset_sources = tegra30_reset_sources,
2075 .num_reset_sources = 5,
2076 .reset_levels = NULL,
2077 .num_reset_levels = 0,
2080 static const char * const tegra114_powergates[] = {
2081 [TEGRA_POWERGATE_CPU] = "crail",
2082 [TEGRA_POWERGATE_3D] = "3d",
2083 [TEGRA_POWERGATE_VENC] = "venc",
2084 [TEGRA_POWERGATE_VDEC] = "vdec",
2085 [TEGRA_POWERGATE_MPE] = "mpe",
2086 [TEGRA_POWERGATE_HEG] = "heg",
2087 [TEGRA_POWERGATE_CPU1] = "cpu1",
2088 [TEGRA_POWERGATE_CPU2] = "cpu2",
2089 [TEGRA_POWERGATE_CPU3] = "cpu3",
2090 [TEGRA_POWERGATE_CELP] = "celp",
2091 [TEGRA_POWERGATE_CPU0] = "cpu0",
2092 [TEGRA_POWERGATE_C0NC] = "c0nc",
2093 [TEGRA_POWERGATE_C1NC] = "c1nc",
2094 [TEGRA_POWERGATE_DIS] = "dis",
2095 [TEGRA_POWERGATE_DISB] = "disb",
2096 [TEGRA_POWERGATE_XUSBA] = "xusba",
2097 [TEGRA_POWERGATE_XUSBB] = "xusbb",
2098 [TEGRA_POWERGATE_XUSBC] = "xusbc",
2101 static const u8 tegra114_cpu_powergates[] = {
2102 TEGRA_POWERGATE_CPU0,
2103 TEGRA_POWERGATE_CPU1,
2104 TEGRA_POWERGATE_CPU2,
2105 TEGRA_POWERGATE_CPU3,
2108 static const struct tegra_pmc_soc tegra114_pmc_soc = {
2109 .num_powergates = ARRAY_SIZE(tegra114_powergates),
2110 .powergates = tegra114_powergates,
2111 .num_cpu_powergates = ARRAY_SIZE(tegra114_cpu_powergates),
2112 .cpu_powergates = tegra114_cpu_powergates,
2113 .has_tsense_reset = true,
2114 .has_gpu_clamps = false,
2115 .has_impl_33v_pwr = false,
2120 .regs = &tegra20_pmc_regs,
2121 .init = tegra20_pmc_init,
2122 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
2123 .reset_sources = tegra30_reset_sources,
2124 .num_reset_sources = 5,
2125 .reset_levels = NULL,
2126 .num_reset_levels = 0,
2129 static const char * const tegra124_powergates[] = {
2130 [TEGRA_POWERGATE_CPU] = "crail",
2131 [TEGRA_POWERGATE_3D] = "3d",
2132 [TEGRA_POWERGATE_VENC] = "venc",
2133 [TEGRA_POWERGATE_PCIE] = "pcie",
2134 [TEGRA_POWERGATE_VDEC] = "vdec",
2135 [TEGRA_POWERGATE_MPE] = "mpe",
2136 [TEGRA_POWERGATE_HEG] = "heg",
2137 [TEGRA_POWERGATE_SATA] = "sata",
2138 [TEGRA_POWERGATE_CPU1] = "cpu1",
2139 [TEGRA_POWERGATE_CPU2] = "cpu2",
2140 [TEGRA_POWERGATE_CPU3] = "cpu3",
2141 [TEGRA_POWERGATE_CELP] = "celp",
2142 [TEGRA_POWERGATE_CPU0] = "cpu0",
2143 [TEGRA_POWERGATE_C0NC] = "c0nc",
2144 [TEGRA_POWERGATE_C1NC] = "c1nc",
2145 [TEGRA_POWERGATE_SOR] = "sor",
2146 [TEGRA_POWERGATE_DIS] = "dis",
2147 [TEGRA_POWERGATE_DISB] = "disb",
2148 [TEGRA_POWERGATE_XUSBA] = "xusba",
2149 [TEGRA_POWERGATE_XUSBB] = "xusbb",
2150 [TEGRA_POWERGATE_XUSBC] = "xusbc",
2151 [TEGRA_POWERGATE_VIC] = "vic",
2152 [TEGRA_POWERGATE_IRAM] = "iram",
2155 static const u8 tegra124_cpu_powergates[] = {
2156 TEGRA_POWERGATE_CPU0,
2157 TEGRA_POWERGATE_CPU1,
2158 TEGRA_POWERGATE_CPU2,
2159 TEGRA_POWERGATE_CPU3,
2162 #define TEGRA_IO_PAD(_id, _dpd, _voltage, _name) \
2163 ((struct tegra_io_pad_soc) { \
2166 .voltage = (_voltage), \
2170 #define TEGRA_IO_PIN_DESC(_id, _dpd, _voltage, _name) \
2171 ((struct pinctrl_pin_desc) { \
2176 #define TEGRA124_IO_PAD_TABLE(_pad) \
2177 /* .id .dpd .voltage .name */ \
2178 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
2179 _pad(TEGRA_IO_PAD_BB, 15, UINT_MAX, "bb"), \
2180 _pad(TEGRA_IO_PAD_CAM, 36, UINT_MAX, "cam"), \
2181 _pad(TEGRA_IO_PAD_COMP, 22, UINT_MAX, "comp"), \
2182 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
2183 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csb"), \
2184 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "cse"), \
2185 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
2186 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
2187 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
2188 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
2189 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
2190 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
2191 _pad(TEGRA_IO_PAD_HV, 38, UINT_MAX, "hv"), \
2192 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
2193 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
2194 _pad(TEGRA_IO_PAD_NAND, 13, UINT_MAX, "nand"), \
2195 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
2196 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
2197 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
2198 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
2199 _pad(TEGRA_IO_PAD_SDMMC1, 33, UINT_MAX, "sdmmc1"), \
2200 _pad(TEGRA_IO_PAD_SDMMC3, 34, UINT_MAX, "sdmmc3"), \
2201 _pad(TEGRA_IO_PAD_SDMMC4, 35, UINT_MAX, "sdmmc4"), \
2202 _pad(TEGRA_IO_PAD_SYS_DDC, 58, UINT_MAX, "sys_ddc"), \
2203 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
2204 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
2205 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
2206 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
2207 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb_bias")
2209 static const struct tegra_io_pad_soc tegra124_io_pads[] = {
2210 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PAD)
2213 static const struct pinctrl_pin_desc tegra124_pin_descs[] = {
2214 TEGRA124_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
2217 static const struct tegra_pmc_soc tegra124_pmc_soc = {
2218 .num_powergates = ARRAY_SIZE(tegra124_powergates),
2219 .powergates = tegra124_powergates,
2220 .num_cpu_powergates = ARRAY_SIZE(tegra124_cpu_powergates),
2221 .cpu_powergates = tegra124_cpu_powergates,
2222 .has_tsense_reset = true,
2223 .has_gpu_clamps = true,
2224 .has_impl_33v_pwr = false,
2225 .num_io_pads = ARRAY_SIZE(tegra124_io_pads),
2226 .io_pads = tegra124_io_pads,
2227 .num_pin_descs = ARRAY_SIZE(tegra124_pin_descs),
2228 .pin_descs = tegra124_pin_descs,
2229 .regs = &tegra20_pmc_regs,
2230 .init = tegra20_pmc_init,
2231 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
2232 .reset_sources = tegra30_reset_sources,
2233 .num_reset_sources = 5,
2234 .reset_levels = NULL,
2235 .num_reset_levels = 0,
2238 static const char * const tegra210_powergates[] = {
2239 [TEGRA_POWERGATE_CPU] = "crail",
2240 [TEGRA_POWERGATE_3D] = "3d",
2241 [TEGRA_POWERGATE_VENC] = "venc",
2242 [TEGRA_POWERGATE_PCIE] = "pcie",
2243 [TEGRA_POWERGATE_MPE] = "mpe",
2244 [TEGRA_POWERGATE_SATA] = "sata",
2245 [TEGRA_POWERGATE_CPU1] = "cpu1",
2246 [TEGRA_POWERGATE_CPU2] = "cpu2",
2247 [TEGRA_POWERGATE_CPU3] = "cpu3",
2248 [TEGRA_POWERGATE_CPU0] = "cpu0",
2249 [TEGRA_POWERGATE_C0NC] = "c0nc",
2250 [TEGRA_POWERGATE_SOR] = "sor",
2251 [TEGRA_POWERGATE_DIS] = "dis",
2252 [TEGRA_POWERGATE_DISB] = "disb",
2253 [TEGRA_POWERGATE_XUSBA] = "xusba",
2254 [TEGRA_POWERGATE_XUSBB] = "xusbb",
2255 [TEGRA_POWERGATE_XUSBC] = "xusbc",
2256 [TEGRA_POWERGATE_VIC] = "vic",
2257 [TEGRA_POWERGATE_IRAM] = "iram",
2258 [TEGRA_POWERGATE_NVDEC] = "nvdec",
2259 [TEGRA_POWERGATE_NVJPG] = "nvjpg",
2260 [TEGRA_POWERGATE_AUD] = "aud",
2261 [TEGRA_POWERGATE_DFD] = "dfd",
2262 [TEGRA_POWERGATE_VE2] = "ve2",
2265 static const u8 tegra210_cpu_powergates[] = {
2266 TEGRA_POWERGATE_CPU0,
2267 TEGRA_POWERGATE_CPU1,
2268 TEGRA_POWERGATE_CPU2,
2269 TEGRA_POWERGATE_CPU3,
2272 #define TEGRA210_IO_PAD_TABLE(_pad) \
2273 /* .id .dpd .voltage .name */ \
2274 _pad(TEGRA_IO_PAD_AUDIO, 17, 5, "audio"), \
2275 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 18, "audio-hv"), \
2276 _pad(TEGRA_IO_PAD_CAM, 36, 10, "cam"), \
2277 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
2278 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
2279 _pad(TEGRA_IO_PAD_CSIC, 42, UINT_MAX, "csic"), \
2280 _pad(TEGRA_IO_PAD_CSID, 43, UINT_MAX, "csid"), \
2281 _pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "csie"), \
2282 _pad(TEGRA_IO_PAD_CSIF, 45, UINT_MAX, "csif"), \
2283 _pad(TEGRA_IO_PAD_DBG, 25, 19, "dbg"), \
2284 _pad(TEGRA_IO_PAD_DEBUG_NONAO, 26, UINT_MAX, "debug-nonao"), \
2285 _pad(TEGRA_IO_PAD_DMIC, 50, 20, "dmic"), \
2286 _pad(TEGRA_IO_PAD_DP, 51, UINT_MAX, "dp"), \
2287 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
2288 _pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \
2289 _pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \
2290 _pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \
2291 _pad(TEGRA_IO_PAD_EMMC, 35, UINT_MAX, "emmc"), \
2292 _pad(TEGRA_IO_PAD_EMMC2, 37, UINT_MAX, "emmc2"), \
2293 _pad(TEGRA_IO_PAD_GPIO, 27, 21, "gpio"), \
2294 _pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \
2295 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
2296 _pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \
2297 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
2298 _pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \
2299 _pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \
2300 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
2301 _pad(TEGRA_IO_PAD_PEX_CNTRL, UINT_MAX, 11, "pex-cntrl"), \
2302 _pad(TEGRA_IO_PAD_SDMMC1, 33, 12, "sdmmc1"), \
2303 _pad(TEGRA_IO_PAD_SDMMC3, 34, 13, "sdmmc3"), \
2304 _pad(TEGRA_IO_PAD_SPI, 46, 22, "spi"), \
2305 _pad(TEGRA_IO_PAD_SPI_HV, 47, 23, "spi-hv"), \
2306 _pad(TEGRA_IO_PAD_UART, 14, 2, "uart"), \
2307 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
2308 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
2309 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
2310 _pad(TEGRA_IO_PAD_USB3, 18, UINT_MAX, "usb3"), \
2311 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias")
2313 static const struct tegra_io_pad_soc tegra210_io_pads[] = {
2314 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PAD)
2317 static const struct pinctrl_pin_desc tegra210_pin_descs[] = {
2318 TEGRA210_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
2321 static const struct tegra_pmc_soc tegra210_pmc_soc = {
2322 .num_powergates = ARRAY_SIZE(tegra210_powergates),
2323 .powergates = tegra210_powergates,
2324 .num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates),
2325 .cpu_powergates = tegra210_cpu_powergates,
2326 .has_tsense_reset = true,
2327 .has_gpu_clamps = true,
2328 .has_impl_33v_pwr = false,
2329 .needs_mbist_war = true,
2330 .num_io_pads = ARRAY_SIZE(tegra210_io_pads),
2331 .io_pads = tegra210_io_pads,
2332 .num_pin_descs = ARRAY_SIZE(tegra210_pin_descs),
2333 .pin_descs = tegra210_pin_descs,
2334 .regs = &tegra20_pmc_regs,
2335 .init = tegra20_pmc_init,
2336 .setup_irq_polarity = tegra20_pmc_setup_irq_polarity,
2337 .reset_sources = tegra30_reset_sources,
2338 .num_reset_sources = 5,
2339 .reset_levels = NULL,
2340 .num_reset_levels = 0,
2343 #define TEGRA186_IO_PAD_TABLE(_pad) \
2344 /* .id .dpd .voltage .name */ \
2345 _pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \
2346 _pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \
2347 _pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \
2348 _pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \
2349 _pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \
2350 _pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \
2351 _pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \
2352 _pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \
2353 _pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \
2354 _pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \
2355 _pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \
2356 _pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias"), \
2357 _pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \
2358 _pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \
2359 _pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \
2360 _pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \
2361 _pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \
2362 _pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \
2363 _pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \
2364 _pad(TEGRA_IO_PAD_SDMMC2_HV, 34, 5, "sdmmc2-hv"), \
2365 _pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \
2366 _pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \
2367 _pad(TEGRA_IO_PAD_DSIB, 40, UINT_MAX, "dsib"), \
2368 _pad(TEGRA_IO_PAD_DSIC, 41, UINT_MAX, "dsic"), \
2369 _pad(TEGRA_IO_PAD_DSID, 42, UINT_MAX, "dsid"), \
2370 _pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \
2371 _pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \
2372 _pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \
2373 _pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \
2374 _pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \
2375 _pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \
2376 _pad(TEGRA_IO_PAD_DMIC_HV, 52, 2, "dmic-hv"), \
2377 _pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \
2378 _pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \
2379 _pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \
2380 _pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \
2381 _pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \
2382 _pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv")
2384 static const struct tegra_io_pad_soc tegra186_io_pads[] = {
2385 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PAD)
2388 static const struct pinctrl_pin_desc tegra186_pin_descs[] = {
2389 TEGRA186_IO_PAD_TABLE(TEGRA_IO_PIN_DESC)
2392 static const struct tegra_pmc_regs tegra186_pmc_regs = {
2397 .dpd2_status = 0x80,
2399 .rst_source_shift = 0x2,
2400 .rst_source_mask = 0x3C,
2401 .rst_level_shift = 0x0,
2402 .rst_level_mask = 0x3,
2405 static void tegra186_pmc_setup_irq_polarity(struct tegra_pmc *pmc,
2406 struct device_node *np,
2409 struct resource regs;
2414 index = of_property_match_string(np, "reg-names", "wake");
2416 pr_err("failed to find PMC wake registers\n");
2420 of_address_to_resource(np, index, ®s);
2422 wake = ioremap_nocache(regs.start, resource_size(®s));
2424 pr_err("failed to map PMC wake registers\n");
2428 value = readl(wake + WAKE_AOWAKE_CTRL);
2431 value |= WAKE_AOWAKE_CTRL_INTR_POLARITY;
2433 value &= ~WAKE_AOWAKE_CTRL_INTR_POLARITY;
2435 writel(value, wake + WAKE_AOWAKE_CTRL);
2440 static const struct tegra_wake_event tegra186_wake_events[] = {
2441 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA_AON_GPIO(FF, 0)),
2442 TEGRA_WAKE_IRQ("rtc", 73, 10),
2445 static const struct tegra_pmc_soc tegra186_pmc_soc = {
2446 .num_powergates = 0,
2448 .num_cpu_powergates = 0,
2449 .cpu_powergates = NULL,
2450 .has_tsense_reset = false,
2451 .has_gpu_clamps = false,
2452 .has_impl_33v_pwr = true,
2453 .num_io_pads = ARRAY_SIZE(tegra186_io_pads),
2454 .io_pads = tegra186_io_pads,
2455 .num_pin_descs = ARRAY_SIZE(tegra186_pin_descs),
2456 .pin_descs = tegra186_pin_descs,
2457 .regs = &tegra186_pmc_regs,
2459 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
2460 .reset_sources = tegra186_reset_sources,
2461 .num_reset_sources = 14,
2462 .reset_levels = tegra186_reset_levels,
2463 .num_reset_levels = 3,
2464 .num_wake_events = ARRAY_SIZE(tegra186_wake_events),
2465 .wake_events = tegra186_wake_events,
2468 static const struct tegra_io_pad_soc tegra194_io_pads[] = {
2469 { .id = TEGRA_IO_PAD_CSIA, .dpd = 0, .voltage = UINT_MAX },
2470 { .id = TEGRA_IO_PAD_CSIB, .dpd = 1, .voltage = UINT_MAX },
2471 { .id = TEGRA_IO_PAD_MIPI_BIAS, .dpd = 3, .voltage = UINT_MAX },
2472 { .id = TEGRA_IO_PAD_PEX_CLK_BIAS, .dpd = 4, .voltage = UINT_MAX },
2473 { .id = TEGRA_IO_PAD_PEX_CLK3, .dpd = 5, .voltage = UINT_MAX },
2474 { .id = TEGRA_IO_PAD_PEX_CLK2, .dpd = 6, .voltage = UINT_MAX },
2475 { .id = TEGRA_IO_PAD_PEX_CLK1, .dpd = 7, .voltage = UINT_MAX },
2476 { .id = TEGRA_IO_PAD_EQOS, .dpd = 8, .voltage = UINT_MAX },
2477 { .id = TEGRA_IO_PAD_PEX_CLK2_BIAS, .dpd = 9, .voltage = UINT_MAX },
2478 { .id = TEGRA_IO_PAD_PEX_CLK2, .dpd = 10, .voltage = UINT_MAX },
2479 { .id = TEGRA_IO_PAD_DAP3, .dpd = 11, .voltage = UINT_MAX },
2480 { .id = TEGRA_IO_PAD_DAP5, .dpd = 12, .voltage = UINT_MAX },
2481 { .id = TEGRA_IO_PAD_UART, .dpd = 14, .voltage = UINT_MAX },
2482 { .id = TEGRA_IO_PAD_PWR_CTL, .dpd = 15, .voltage = UINT_MAX },
2483 { .id = TEGRA_IO_PAD_SOC_GPIO53, .dpd = 16, .voltage = UINT_MAX },
2484 { .id = TEGRA_IO_PAD_AUDIO, .dpd = 17, .voltage = UINT_MAX },
2485 { .id = TEGRA_IO_PAD_GP_PWM2, .dpd = 18, .voltage = UINT_MAX },
2486 { .id = TEGRA_IO_PAD_GP_PWM3, .dpd = 19, .voltage = UINT_MAX },
2487 { .id = TEGRA_IO_PAD_SOC_GPIO12, .dpd = 20, .voltage = UINT_MAX },
2488 { .id = TEGRA_IO_PAD_SOC_GPIO13, .dpd = 21, .voltage = UINT_MAX },
2489 { .id = TEGRA_IO_PAD_SOC_GPIO10, .dpd = 22, .voltage = UINT_MAX },
2490 { .id = TEGRA_IO_PAD_UART4, .dpd = 23, .voltage = UINT_MAX },
2491 { .id = TEGRA_IO_PAD_UART5, .dpd = 24, .voltage = UINT_MAX },
2492 { .id = TEGRA_IO_PAD_DBG, .dpd = 25, .voltage = UINT_MAX },
2493 { .id = TEGRA_IO_PAD_HDMI_DP3, .dpd = 26, .voltage = UINT_MAX },
2494 { .id = TEGRA_IO_PAD_HDMI_DP2, .dpd = 27, .voltage = UINT_MAX },
2495 { .id = TEGRA_IO_PAD_HDMI_DP0, .dpd = 28, .voltage = UINT_MAX },
2496 { .id = TEGRA_IO_PAD_HDMI_DP1, .dpd = 29, .voltage = UINT_MAX },
2497 { .id = TEGRA_IO_PAD_PEX_CNTRL, .dpd = 32, .voltage = UINT_MAX },
2498 { .id = TEGRA_IO_PAD_PEX_CTL2, .dpd = 33, .voltage = UINT_MAX },
2499 { .id = TEGRA_IO_PAD_PEX_L0_RST_N, .dpd = 34, .voltage = UINT_MAX },
2500 { .id = TEGRA_IO_PAD_PEX_L1_RST_N, .dpd = 35, .voltage = UINT_MAX },
2501 { .id = TEGRA_IO_PAD_SDMMC4, .dpd = 36, .voltage = UINT_MAX },
2502 { .id = TEGRA_IO_PAD_PEX_L5_RST_N, .dpd = 37, .voltage = UINT_MAX },
2503 { .id = TEGRA_IO_PAD_CSIC, .dpd = 43, .voltage = UINT_MAX },
2504 { .id = TEGRA_IO_PAD_CSID, .dpd = 44, .voltage = UINT_MAX },
2505 { .id = TEGRA_IO_PAD_CSIE, .dpd = 45, .voltage = UINT_MAX },
2506 { .id = TEGRA_IO_PAD_CSIF, .dpd = 46, .voltage = UINT_MAX },
2507 { .id = TEGRA_IO_PAD_SPI, .dpd = 47, .voltage = UINT_MAX },
2508 { .id = TEGRA_IO_PAD_UFS, .dpd = 49, .voltage = UINT_MAX },
2509 { .id = TEGRA_IO_PAD_CSIG, .dpd = 50, .voltage = UINT_MAX },
2510 { .id = TEGRA_IO_PAD_CSIH, .dpd = 51, .voltage = UINT_MAX },
2511 { .id = TEGRA_IO_PAD_EDP, .dpd = 53, .voltage = UINT_MAX },
2512 { .id = TEGRA_IO_PAD_SDMMC1_HV, .dpd = 55, .voltage = UINT_MAX },
2513 { .id = TEGRA_IO_PAD_SDMMC3_HV, .dpd = 56, .voltage = UINT_MAX },
2514 { .id = TEGRA_IO_PAD_CONN, .dpd = 60, .voltage = UINT_MAX },
2515 { .id = TEGRA_IO_PAD_AUDIO_HV, .dpd = 61, .voltage = UINT_MAX },
2518 static const struct tegra_wake_event tegra194_wake_events[] = {
2519 TEGRA_WAKE_GPIO("power", 29, 1, TEGRA194_AON_GPIO(EE, 4)),
2520 TEGRA_WAKE_IRQ("rtc", 73, 10),
2523 static const struct tegra_pmc_soc tegra194_pmc_soc = {
2524 .num_powergates = 0,
2526 .num_cpu_powergates = 0,
2527 .cpu_powergates = NULL,
2528 .has_tsense_reset = false,
2529 .has_gpu_clamps = false,
2530 .num_io_pads = ARRAY_SIZE(tegra194_io_pads),
2531 .io_pads = tegra194_io_pads,
2532 .regs = &tegra186_pmc_regs,
2534 .setup_irq_polarity = tegra186_pmc_setup_irq_polarity,
2535 .num_wake_events = ARRAY_SIZE(tegra194_wake_events),
2536 .wake_events = tegra194_wake_events,
2539 static const struct of_device_id tegra_pmc_match[] = {
2540 { .compatible = "nvidia,tegra194-pmc", .data = &tegra194_pmc_soc },
2541 { .compatible = "nvidia,tegra186-pmc", .data = &tegra186_pmc_soc },
2542 { .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc },
2543 { .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc },
2544 { .compatible = "nvidia,tegra124-pmc", .data = &tegra124_pmc_soc },
2545 { .compatible = "nvidia,tegra114-pmc", .data = &tegra114_pmc_soc },
2546 { .compatible = "nvidia,tegra30-pmc", .data = &tegra30_pmc_soc },
2547 { .compatible = "nvidia,tegra20-pmc", .data = &tegra20_pmc_soc },
2551 static struct platform_driver tegra_pmc_driver = {
2553 .name = "tegra-pmc",
2554 .suppress_bind_attrs = true,
2555 .of_match_table = tegra_pmc_match,
2556 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
2557 .pm = &tegra_pmc_pm_ops,
2560 .probe = tegra_pmc_probe,
2562 builtin_platform_driver(tegra_pmc_driver);
2565 * Early initialization to allow access to registers in the very early boot
2568 static int __init tegra_pmc_early_init(void)
2570 const struct of_device_id *match;
2571 struct device_node *np;
2572 struct resource regs;
2575 mutex_init(&pmc->powergates_lock);
2577 np = of_find_matching_node_and_match(NULL, tegra_pmc_match, &match);
2580 * Fall back to legacy initialization for 32-bit ARM only. All
2581 * 64-bit ARM device tree files for Tegra are required to have
2584 * This is for backwards-compatibility with old device trees
2585 * that didn't contain a PMC node. Note that in this case the
2586 * SoC data can't be matched and therefore powergating is
2589 if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) {
2590 pr_warn("DT node not found, powergating disabled\n");
2592 regs.start = 0x7000e400;
2593 regs.end = 0x7000e7ff;
2594 regs.flags = IORESOURCE_MEM;
2596 pr_warn("Using memory region %pR\n", ®s);
2599 * At this point we're not running on Tegra, so play
2600 * nice with multi-platform kernels.
2606 * Extract information from the device tree if we've found a
2609 if (of_address_to_resource(np, 0, ®s) < 0) {
2610 pr_err("failed to get PMC registers\n");
2616 pmc->base = ioremap_nocache(regs.start, resource_size(®s));
2618 pr_err("failed to map PMC registers\n");
2624 pmc->soc = match->data;
2626 tegra_powergate_init(pmc, np);
2629 * Invert the interrupt polarity if a PMC device tree node
2630 * exists and contains the nvidia,invert-interrupt property.
2632 invert = of_property_read_bool(np, "nvidia,invert-interrupt");
2634 pmc->soc->setup_irq_polarity(pmc, np, invert);
2641 early_initcall(tegra_pmc_early_init);