diff options
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/Makefile | 3 | ||||
| -rw-r--r-- | arch/arm/mach-imx/common.h | 10 | ||||
| -rw-r--r-- | arch/arm/mach-imx/cpuidle-imx7ulp.c | 60 | ||||
| -rw-r--r-- | arch/arm/mach-imx/cpuidle.h | 5 | ||||
| -rw-r--r-- | arch/arm/mach-imx/mach-imx7ulp.c | 46 | ||||
| -rw-r--r-- | arch/arm/mach-imx/mach-mx21ads.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-imx/mach-mx27ads.c | 2 | ||||
| -rw-r--r-- | arch/arm/mach-imx/mmdc.c | 9 | ||||
| -rw-r--r-- | arch/arm/mach-imx/pm-imx7ulp.c | 49 |
9 files changed, 170 insertions, 15 deletions
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile index 8af2f7e91d13..35ff620537e6 100644 --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -29,9 +29,10 @@ obj-$(CONFIG_SOC_IMX6SL) += cpuidle-imx6sl.o obj-$(CONFIG_SOC_IMX6SLL) += cpuidle-imx6sx.o obj-$(CONFIG_SOC_IMX6SX) += cpuidle-imx6sx.o obj-$(CONFIG_SOC_IMX6UL) += cpuidle-imx6sx.o +obj-$(CONFIG_SOC_IMX7ULP) += cpuidle-imx7ulp.o endif -ifdef CONFIG_SND_IMX_SOC +ifdef CONFIG_SND_SOC_IMX_PCM_FIQ obj-y += ssi-fiq.o obj-y += ssi-fiq-ksym.o endif diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index bc915e5b4d56..c51764a85fd7 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -72,6 +72,15 @@ enum mxc_cpu_pwr_mode { STOP_POWER_OFF, /* STOP + SRPG */ }; +enum ulp_cpu_pwr_mode { + ULP_PM_HSRUN, /* High speed run mode */ + ULP_PM_RUN, /* Run mode */ + ULP_PM_WAIT, /* Wait mode */ + ULP_PM_STOP, /* Stop mode */ + ULP_PM_VLPS, /* Very low power stop mode */ + ULP_PM_VLLS, /* very low leakage stop mode */ +}; + void imx_enable_cpu(int cpu, bool enable); void imx_set_cpu_jump(int cpu, void *jump_addr); u32 imx_get_cpu_arg(int cpu); @@ -98,6 +107,7 @@ int imx6_set_lpm(enum mxc_cpu_pwr_mode mode); void imx6_set_int_mem_clk_lpm(bool enable); void imx6sl_set_wait_clk(bool enter); int imx_mmdc_get_ddr_type(void); +int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode); void imx_cpu_die(unsigned int cpu); int imx_cpu_kill(unsigned int cpu); diff --git a/arch/arm/mach-imx/cpuidle-imx7ulp.c b/arch/arm/mach-imx/cpuidle-imx7ulp.c new file mode 100644 index 000000000000..ca86c967d19e --- /dev/null +++ b/arch/arm/mach-imx/cpuidle-imx7ulp.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017-2018 NXP + * Anson Huang <Anson.Huang@nxp.com> + */ + +#include <linux/cpuidle.h> +#include <linux/module.h> +#include <asm/cpuidle.h> + +#include "common.h" +#include "cpuidle.h" + +static int imx7ulp_enter_wait(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index) +{ + if (index == 1) + imx7ulp_set_lpm(ULP_PM_WAIT); + else + imx7ulp_set_lpm(ULP_PM_STOP); + + cpu_do_idle(); + + imx7ulp_set_lpm(ULP_PM_RUN); + + return index; +} + +static struct cpuidle_driver imx7ulp_cpuidle_driver = { + .name = "imx7ulp_cpuidle", + .owner = THIS_MODULE, + .states = { + /* WFI */ + ARM_CPUIDLE_WFI_STATE, + /* WAIT */ + { + .exit_latency = 50, + .target_residency = 75, + .enter = imx7ulp_enter_wait, + .name = "WAIT", + .desc = "PSTOP2", + }, + /* STOP */ + { + .exit_latency = 100, + .target_residency = 150, + .enter = imx7ulp_enter_wait, + .name = "STOP", + .desc = "PSTOP1", + }, + }, + .state_count = 3, + .safe_state_index = 0, +}; + +int __init imx7ulp_cpuidle_init(void) +{ + return cpuidle_register(&imx7ulp_cpuidle_driver, NULL); +} diff --git a/arch/arm/mach-imx/cpuidle.h b/arch/arm/mach-imx/cpuidle.h index f9140128ba05..7694c8f810a4 100644 --- a/arch/arm/mach-imx/cpuidle.h +++ b/arch/arm/mach-imx/cpuidle.h @@ -15,6 +15,7 @@ extern int imx5_cpuidle_init(void); extern int imx6q_cpuidle_init(void); extern int imx6sl_cpuidle_init(void); extern int imx6sx_cpuidle_init(void); +extern int imx7ulp_cpuidle_init(void); #else static inline int imx5_cpuidle_init(void) { @@ -32,4 +33,8 @@ static inline int imx6sx_cpuidle_init(void) { return 0; } +static inline int imx7ulp_cpuidle_init(void) +{ + return 0; +} #endif diff --git a/arch/arm/mach-imx/mach-imx7ulp.c b/arch/arm/mach-imx/mach-imx7ulp.c index 33937ebf66b5..11ac71aaf965 100644 --- a/arch/arm/mach-imx/mach-imx7ulp.c +++ b/arch/arm/mach-imx/mach-imx7ulp.c @@ -6,17 +6,57 @@ */ #include <linux/irqchip.h> +#include <linux/mfd/syscon.h> #include <linux/of_platform.h> +#include <linux/regmap.h> #include <asm/mach/arch.h> #include "common.h" +#include "cpuidle.h" #include "hardware.h" +#define SIM_JTAG_ID_REG 0x8c + +static void __init imx7ulp_set_revision(void) +{ + struct regmap *sim; + u32 revision; + + sim = syscon_regmap_lookup_by_compatible("fsl,imx7ulp-sim"); + if (IS_ERR(sim)) { + pr_warn("failed to find fsl,imx7ulp-sim regmap!\n"); + return; + } + + if (regmap_read(sim, SIM_JTAG_ID_REG, &revision)) { + pr_warn("failed to read sim regmap!\n"); + return; + } + + /* + * bit[31:28] of JTAG_ID register defines revision as below from B0: + * 0001 B0 + * 0010 B1 + */ + switch (revision >> 28) { + case 1: + imx_set_soc_revision(IMX_CHIP_REVISION_2_0); + break; + case 2: + imx_set_soc_revision(IMX_CHIP_REVISION_2_1); + break; + default: + imx_set_soc_revision(IMX_CHIP_REVISION_1_0); + break; + } +} + static void __init imx7ulp_init_machine(void) { imx7ulp_pm_init(); mxc_set_cpu_type(MXC_CPU_IMX7ULP); + imx7ulp_set_revision(); of_platform_default_populate(NULL, NULL, imx_soc_device_init()); } @@ -25,7 +65,13 @@ static const char *const imx7ulp_dt_compat[] __initconst = { NULL, }; +static void __init imx7ulp_init_late(void) +{ + imx7ulp_cpuidle_init(); +} + DT_MACHINE_START(IMX7ulp, "Freescale i.MX7ULP (Device Tree)") .init_machine = imx7ulp_init_machine, .dt_compat = imx7ulp_dt_compat, + .init_late = imx7ulp_init_late, MACHINE_END diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c index 2e1e540f2e5a..d278fb672d40 100644 --- a/arch/arm/mach-imx/mach-mx21ads.c +++ b/arch/arm/mach-imx/mach-mx21ads.c @@ -205,7 +205,6 @@ static struct regulator_init_data mx21ads_lcd_regulator_init_data = { static struct fixed_voltage_config mx21ads_lcd_regulator_pdata = { .supply_name = "LCD", .microvolts = 3300000, - .enable_high = 1, .init_data = &mx21ads_lcd_regulator_init_data, }; diff --git a/arch/arm/mach-imx/mach-mx27ads.c b/arch/arm/mach-imx/mach-mx27ads.c index f5e04047ed13..6dd7f57c332f 100644 --- a/arch/arm/mach-imx/mach-mx27ads.c +++ b/arch/arm/mach-imx/mach-mx27ads.c @@ -237,7 +237,7 @@ static struct fixed_voltage_config mx27ads_lcd_regulator_pdata = { static struct gpiod_lookup_table mx27ads_lcd_regulator_gpiod_table = { .dev_id = "reg-fixed-voltage.0", /* Let's hope ID 0 is what we get */ .table = { - GPIO_LOOKUP("LCD", 0, NULL, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("LCD", 0, NULL, GPIO_ACTIVE_LOW), { }, }, }; diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c index e49e06834516..fce4b426c379 100644 --- a/arch/arm/mach-imx/mmdc.c +++ b/arch/arm/mach-imx/mmdc.c @@ -294,13 +294,7 @@ static int mmdc_pmu_event_init(struct perf_event *event) return -EOPNOTSUPP; } - if (event->attr.exclude_user || - event->attr.exclude_kernel || - event->attr.exclude_hv || - event->attr.exclude_idle || - event->attr.exclude_host || - event->attr.exclude_guest || - event->attr.sample_period) + if (event->attr.sample_period) return -EINVAL; if (cfg < 0 || cfg >= MMDC_NUM_COUNTERS) @@ -456,6 +450,7 @@ static int mmdc_pmu_init(struct mmdc_pmu *pmu_mmdc, .start = mmdc_pmu_event_start, .stop = mmdc_pmu_event_stop, .read = mmdc_pmu_event_update, + .capabilities = PERF_PMU_CAP_NO_EXCLUDE, }, .mmdc_base = mmdc_base, .dev = dev, diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c index cf6a380c2b8d..7b2f7387e662 100644 --- a/arch/arm/mach-imx/pm-imx7ulp.c +++ b/arch/arm/mach-imx/pm-imx7ulp.c @@ -9,21 +9,60 @@ #include <linux/of.h> #include <linux/of_address.h> +#include "common.h" + #define SMC_PMCTRL 0x10 #define BP_PMCTRL_PSTOPO 16 #define PSTOPO_PSTOP3 0x3 +#define PSTOPO_PSTOP2 0x2 +#define PSTOPO_PSTOP1 0x1 +#define BP_PMCTRL_RUNM 8 +#define RUNM_RUN 0 +#define BP_PMCTRL_STOPM 0 +#define STOPM_STOP 0 + +#define BM_PMCTRL_PSTOPO (3 << BP_PMCTRL_PSTOPO) +#define BM_PMCTRL_RUNM (3 << BP_PMCTRL_RUNM) +#define BM_PMCTRL_STOPM (7 << BP_PMCTRL_STOPM) + +static void __iomem *smc1_base; + +int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode) +{ + u32 val = readl_relaxed(smc1_base + SMC_PMCTRL); + + /* clear all */ + val &= ~(BM_PMCTRL_RUNM | BM_PMCTRL_STOPM | BM_PMCTRL_PSTOPO); + + switch (mode) { + case ULP_PM_RUN: + /* system/bus clock enabled */ + val |= PSTOPO_PSTOP3 << BP_PMCTRL_PSTOPO; + break; + case ULP_PM_WAIT: + /* system clock disabled, bus clock enabled */ + val |= PSTOPO_PSTOP2 << BP_PMCTRL_PSTOPO; + break; + case ULP_PM_STOP: + /* system/bus clock disabled */ + val |= PSTOPO_PSTOP1 << BP_PMCTRL_PSTOPO; + break; + default: + return -EINVAL; + } + + writel_relaxed(val, smc1_base + SMC_PMCTRL); + + return 0; +} void __init imx7ulp_pm_init(void) { struct device_node *np; - void __iomem *smc1_base; np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-smc1"); smc1_base = of_iomap(np, 0); WARN_ON(!smc1_base); - /* Partial Stop mode 3 with system/bus clock enabled */ - writel_relaxed(PSTOPO_PSTOP3 << BP_PMCTRL_PSTOPO, - smc1_base + SMC_PMCTRL); - iounmap(smc1_base); + imx7ulp_set_lpm(ULP_PM_RUN); } |