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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-01 12:18:40 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-01 12:18:40 -0700 |
commit | 50686e8a3aed2f5d295e9d2e79ff43df461c7b76 (patch) | |
tree | e5de912d74c6e1d75e6ecf75f2a62c313955baff /arch/arm/mach-rockchip/pm.c | |
parent | c5fc249862af862df027030188cc083e072ecd19 (diff) | |
parent | 1ec6f701707e4e97e451ff8b662360f1262a6c59 (diff) | |
download | linux-stable-50686e8a3aed2f5d295e9d2e79ff43df461c7b76.tar.gz linux-stable-50686e8a3aed2f5d295e9d2e79ff43df461c7b76.tar.bz2 linux-stable-50686e8a3aed2f5d295e9d2e79ff43df461c7b76.zip |
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Olof Johansson:
"New or improved SoC support:
- add support for Atmel's SAMA5D2 SoC
- add support for Freescale i.MX6UL
- improved support for TI's DM814x platform
- misc fixes and improvements for RockChip platforms
- Marvell MVEBU suspend/resume support
A few driver changes that ideally would belong in the drivers branch
are also here (acked by appropriate maintainers):
- power key input driver for Freescale platforms (svns)
- RTC driver updates for Freescale platforms (svns/mxc)
- clk fixes for TI DM814/816X
+ a bunch of other changes for various platforms"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
ARM: rockchip: pm: Fix PTR_ERR() argument
ARM: imx: mach-imx6ul: Fix allmodconfig build
clk: ti: fix for definition movement
ARM: uniphier: drop v7_invalidate_l1 call at secondary entry
memory: kill off set_irq_flags usage
rtc: snvs: select option REGMAP_MMIO
ARM: brcmstb: select ARCH_DMA_ADDR_T_64BIT for LPAE
ARM: BCM: Enable ARM erratum 798181 for BRCMSTB
ARM: OMAP2+: Fix power domain operations regression caused by 81xx
ARM: rockchip: enable PMU_GPIOINT_WAKEUP_EN when entering shallow suspend
ARM: rockchip: set correct stabilization thresholds in suspend
ARM: rockchip: rename osc_switch_to_32k variable
ARM: imx6ul: add fec MAC refrence clock and phy fixup init
ARM: imx6ul: add fec bits to GPR syscon definition
rtc: mxc: add support of device tree
dt-binding: document the binding for mxc rtc
rtc: mxc: use a second rtc clock
ARM: davinci: cp_intc: use IRQCHIP_SKIP_SET_WAKE instead of irq_set_wake callback
soc: mediatek: Fix SCPSYS compilation
ARM: at91/soc: add basic support for new sama5d2 SoC
...
Diffstat (limited to 'arch/arm/mach-rockchip/pm.c')
-rw-r--r-- | arch/arm/mach-rockchip/pm.c | 78 |
1 files changed, 69 insertions, 9 deletions
diff --git a/arch/arm/mach-rockchip/pm.c b/arch/arm/mach-rockchip/pm.c index b0dcbe28f78c..bee8c8051929 100644 --- a/arch/arm/mach-rockchip/pm.c +++ b/arch/arm/mach-rockchip/pm.c @@ -45,9 +45,11 @@ static phys_addr_t rk3288_bootram_phy; static struct regmap *pmu_regmap; static struct regmap *sgrf_regmap; +static struct regmap *grf_regmap; static u32 rk3288_pmu_pwr_mode_con; static u32 rk3288_sgrf_soc_con0; +static u32 rk3288_sgrf_cpu_con0; static inline u32 rk3288_l2_config(void) { @@ -66,10 +68,37 @@ static void rk3288_config_bootdata(void) rkpm_bootdata_l2ctlr = rk3288_l2_config(); } +#define GRF_UOC0_CON0 0x320 +#define GRF_UOC1_CON0 0x334 +#define GRF_UOC2_CON0 0x348 +#define GRF_SIDDQ BIT(13) + +static bool rk3288_slp_disable_osc(void) +{ + static const u32 reg_offset[] = { GRF_UOC0_CON0, GRF_UOC1_CON0, + GRF_UOC2_CON0 }; + u32 reg, i; + + /* + * if any usb phy is still on(GRF_SIDDQ==0), that means we need the + * function of usb wakeup, so do not switch to 32khz, since the usb phy + * clk does not connect to 32khz osc + */ + for (i = 0; i < ARRAY_SIZE(reg_offset); i++) { + regmap_read(grf_regmap, reg_offset[i], ®); + if (!(reg & GRF_SIDDQ)) + return false; + } + + return true; +} + static void rk3288_slp_mode_set(int level) { u32 mode_set, mode_set1; + bool osc_disable = rk3288_slp_disable_osc(); + regmap_read(sgrf_regmap, RK3288_SGRF_CPU_CON0, &rk3288_sgrf_cpu_con0); regmap_read(sgrf_regmap, RK3288_SGRF_SOC_CON0, &rk3288_sgrf_soc_con0); regmap_read(pmu_regmap, RK3288_PMU_PWRMODE_CON, @@ -94,9 +123,6 @@ static void rk3288_slp_mode_set(int level) regmap_write(sgrf_regmap, RK3288_SGRF_FAST_BOOT_ADDR, rk3288_bootram_phy); - regmap_write(pmu_regmap, RK3288_PMU_WAKEUP_CFG1, - PMU_ARMINT_WAKEUP_EN); - mode_set = BIT(PMU_GLOBAL_INT_DISABLE) | BIT(PMU_L2FLUSH_EN) | BIT(PMU_SREF0_ENTER_EN) | BIT(PMU_SREF1_ENTER_EN) | BIT(PMU_DDR0_GATING_EN) | BIT(PMU_DDR1_GATING_EN) | @@ -107,13 +133,31 @@ static void rk3288_slp_mode_set(int level) if (level == ROCKCHIP_ARM_OFF_LOGIC_DEEP) { /* arm off, logic deep sleep */ - mode_set |= BIT(PMU_BUS_PD_EN) | + mode_set |= BIT(PMU_BUS_PD_EN) | BIT(PMU_PMU_USE_LF) | BIT(PMU_DDR1IO_RET_EN) | BIT(PMU_DDR0IO_RET_EN) | - BIT(PMU_OSC_24M_DIS) | BIT(PMU_PMU_USE_LF) | BIT(PMU_ALIVE_USE_LF) | BIT(PMU_PLL_PD_EN); + if (osc_disable) + mode_set |= BIT(PMU_OSC_24M_DIS); + mode_set1 |= BIT(PMU_CLR_ALIVE) | BIT(PMU_CLR_BUS) | BIT(PMU_CLR_PERI) | BIT(PMU_CLR_DMA); + + regmap_write(pmu_regmap, RK3288_PMU_WAKEUP_CFG1, + PMU_ARMINT_WAKEUP_EN); + + /* + * In deep suspend we use PMU_PMU_USE_LF to let the rk3288 + * switch its main clock supply to the alternative 32kHz + * source. Therefore set 30ms on a 32kHz clock for pmic + * stabilization. Similar 30ms on 24MHz for the other + * mode below. + */ + regmap_write(pmu_regmap, RK3288_PMU_STABL_CNT, 32 * 30); + + /* only wait for stabilization, if we turned the osc off */ + regmap_write(pmu_regmap, RK3288_PMU_OSC_CNT, + osc_disable ? 32 * 30 : 0); } else { /* * arm off, logic normal @@ -121,6 +165,15 @@ static void rk3288_slp_mode_set(int level) * wakeup will be error */ mode_set |= BIT(PMU_CLK_CORE_SRC_GATE_EN); + + regmap_write(pmu_regmap, RK3288_PMU_WAKEUP_CFG1, + PMU_ARMINT_WAKEUP_EN | PMU_GPIOINT_WAKEUP_EN); + + /* 30ms on a 24MHz clock for pmic stabilization */ + regmap_write(pmu_regmap, RK3288_PMU_STABL_CNT, 24000 * 30); + + /* oscillator is still running, so no need to wait */ + regmap_write(pmu_regmap, RK3288_PMU_OSC_CNT, 0); } regmap_write(pmu_regmap, RK3288_PMU_PWRMODE_CON, mode_set); @@ -129,6 +182,9 @@ static void rk3288_slp_mode_set(int level) static void rk3288_slp_mode_set_resume(void) { + regmap_write(sgrf_regmap, RK3288_SGRF_CPU_CON0, + rk3288_sgrf_cpu_con0 | SGRF_DAPDEVICEEN_WRITE); + regmap_write(pmu_regmap, RK3288_PMU_PWRMODE_CON, rk3288_pmu_pwr_mode_con); @@ -190,7 +246,14 @@ static int rk3288_suspend_init(struct device_node *np) "rockchip,rk3288-sgrf"); if (IS_ERR(sgrf_regmap)) { pr_err("%s: could not find sgrf regmap\n", __func__); - return PTR_ERR(pmu_regmap); + return PTR_ERR(sgrf_regmap); + } + + grf_regmap = syscon_regmap_lookup_by_compatible( + "rockchip,rk3288-grf"); + if (IS_ERR(grf_regmap)) { + pr_err("%s: could not find grf regmap\n", __func__); + return PTR_ERR(grf_regmap); } sram_np = of_find_compatible_node(NULL, NULL, @@ -221,9 +284,6 @@ static int rk3288_suspend_init(struct device_node *np) memcpy(rk3288_bootram_base, rockchip_slp_cpu_resume, rk3288_bootram_sz); - regmap_write(pmu_regmap, RK3288_PMU_OSC_CNT, OSC_STABL_CNT_THRESH); - regmap_write(pmu_regmap, RK3288_PMU_STABL_CNT, PMU_STABL_CNT_THRESH); - return 0; } |