diff options
| author | Wenyou Yang <wenyou.yang@atmel.com> | 2015-03-09 11:45:35 +0800 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2015-03-13 11:12:06 +0100 |
| commit | 09fc78a601e59de89f125c8e6739fd21a7e2fd01 (patch) | |
| tree | 8b89d0c57b93ed42b4eb3c1ad8af16432b34a083 /arch/arm/mach-at91 | |
| parent | 896bc871a4a2db13212831749d21ffa7f405c73b (diff) | |
ARM: at91/pm: remove CONFIG_AT91_SLOW_CLOCK config option
The slow clock always exists, selecting CONFIG_AT91_SLOW_CLOCK config
is unnecessary for the suspend to memory mode.
For this mode the master clock should always switch to the slow clock.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Tested-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91')
| -rw-r--r-- | arch/arm/mach-at91/Kconfig | 13 | ||||
| -rw-r--r-- | arch/arm/mach-at91/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-at91/pm.c | 12 |
3 files changed, 2 insertions, 25 deletions
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index cd0e996565b3..89276fb0052a 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -118,19 +118,6 @@ endif # SOC_SAM_V4_V5 comment "AT91 Feature Selections" -config AT91_SLOW_CLOCK - bool "Suspend-to-RAM disables main oscillator" - depends on SUSPEND - help - Select this if you want Suspend-to-RAM to save the most power - possible (without powering off the CPU) by disabling the PLLs - and main oscillator so that only the 32 KiHz clock is available. - - When only that slow-clock is available, some peripherals lose - functionality. Many can't issue wakeup events unless faster - clocks are available. Some lose their operating state and - need to be completely re-initialized. - config AT91_TIMER_HZ int "Kernel HZ (jiffies per second)" range 32 1024 diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile index 827fdbcce1c7..103c256ecb8b 100644 --- a/arch/arm/mach-at91/Makefile +++ b/arch/arm/mach-at91/Makefile @@ -13,7 +13,7 @@ obj-$(CONFIG_SOC_SAMA5) += sama5.o # Power Management obj-$(CONFIG_PM) += pm.o -obj-$(CONFIG_AT91_SLOW_CLOCK) += pm_slowclock.o +obj-$(CONFIG_PM) += pm_slowclock.o ifeq ($(CONFIG_PM_DEBUG),y) CFLAGS_pm.o += -DDEBUG diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index a4473dcd0f7c..ea4d888994af 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -123,11 +123,9 @@ EXPORT_SYMBOL(at91_suspend_entering_slow_clock); static void (*slow_clock)(void __iomem *pmc, void __iomem *ramc0, void __iomem *ramc1, int memctrl); -#ifdef CONFIG_AT91_SLOW_CLOCK extern void at91_slow_clock(void __iomem *pmc, void __iomem *ramc0, void __iomem *ramc1, int memctrl); extern u32 at91_slow_clock_sz; -#endif static int at91_pm_enter(suspend_state_t state) { @@ -151,10 +149,9 @@ static int at91_pm_enter(suspend_state_t state) * turning off the main oscillator; reverse on wakeup. */ if (slow_clock) { -#ifdef CONFIG_AT91_SLOW_CLOCK /* copy slow_clock handler to SRAM, and call it */ memcpy(slow_clock, at91_slow_clock, at91_slow_clock_sz); -#endif + slow_clock(at91_pmc_base, at91_ramc_base[0], at91_ramc_base[1], at91_pm_data.memctrl); @@ -263,7 +260,6 @@ static __init void at91_dt_ramc(void) at91_pm_set_standby(standby); } -#ifdef CONFIG_AT91_SLOW_CLOCK static void __init at91_pm_sram_init(void) { struct gen_pool *sram_pool; @@ -300,16 +296,10 @@ static void __init at91_pm_sram_init(void) sram_pbase = gen_pool_virt_to_phys(sram_pool, sram_base); slow_clock = __arm_ioremap_exec(sram_pbase, at91_slow_clock_sz, false); } -#endif - static void __init at91_pm_init(void) { -#ifdef CONFIG_AT91_SLOW_CLOCK at91_pm_sram_init(); -#endif - - pr_info("AT91: Power Management%s\n", (slow_clock ? " (with slow clock mode)" : "")); if (at91_cpuidle_device.dev.platform_data) platform_device_register(&at91_cpuidle_device); |