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| author | Krzysztof Kozlowski | 2014-09-25 11:15:13 +0200 |
|---|---|---|
| committer | Kukjin Kim | 2014-10-20 17:06:36 +0200 |
| commit | b588aaec6d0d846c88bfa2ba95e76147386a4cd6 (patch) | |
| tree | e4b440146c8bb4d7ef10cac11650ad02161931f9 /arch/arm/mach-exynos/regs-pmu.h | |
| parent | ARM: EXYNOS: Fix build with PM_SLEEP=n and ARM_EXYNOS_CPUIDLE=y (diff) | |
| download | kernel-qcow2-linux-b588aaec6d0d846c88bfa2ba95e76147386a4cd6.tar.gz kernel-qcow2-linux-b588aaec6d0d846c88bfa2ba95e76147386a4cd6.tar.xz kernel-qcow2-linux-b588aaec6d0d846c88bfa2ba95e76147386a4cd6.zip | |
ARM: EXYNOS: SWRESET is needed to boot secondary CPU on exynos3250
Without software reset the secondary CPU does not power up and
exynos_boot_secondary() ends with pen_release equal to 1. This can be
observed in dmesg:
CPU1: failed to come online
Brought up 1 CPUs
SMP: Total of 1 processors activated.
CPU: All CPU(s) started in SVC mode.
When booting the secondary CPU on Exynos3250 execute also software
reset for core 1.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos/regs-pmu.h')
| -rw-r--r-- | arch/arm/mach-exynos/regs-pmu.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h index 30c03017aa6a..4ea5e320c6d1 100644 --- a/arch/arm/mach-exynos/regs-pmu.h +++ b/arch/arm/mach-exynos/regs-pmu.h @@ -21,6 +21,7 @@ #define S5P_USE_STANDBY_WFI0 (1 << 16) #define S5P_USE_STANDBY_WFE0 (1 << 24) +#define EXYNOS_CORE_PO_RESET(n) ((1 << 4) << n) #define EXYNOS_WAKEUP_FROM_LOWPWR (1 << 28) #define EXYNOS_SWRESET 0x0400 #define EXYNOS5440_SWRESET 0x00C4 @@ -125,6 +126,7 @@ #define S5P_PAD_RET_EBIB_OPTION 0x31A8 #define S5P_CORE_LOCAL_PWR_EN 0x3 +#define S5P_CORE_WAKEUP_FROM_LOCAL_CFG (0x3 << 8) /* Only for EXYNOS4210 */ #define S5P_CMU_CLKSTOP_LCD1_LOWPWR 0x1154 |