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| author |   Shawn Guo <shawn.guo@linaro.org> | 2013-10-09 15:54:31 +0800 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2013-10-21 09:37:32 +0800 |
| commit | 6050d181a4fd4abb745506a6e565d55f1f9df964 (patch) | |
| tree | 0b51b0b269ebb9438eaf00d6b02a12b0c27448cf /arch/arm/mach-imx | |
| parent | ARM: imx: do not return from imx_cpu_die() call (diff) | |
| download | linux-dev-6050d181a4fd4abb745506a6e565d55f1f9df964.tar.xz linux-dev-6050d181a4fd4abb745506a6e565d55f1f9df964.zip | |
ARM: imx: reset core along with enable/disable operation
From hotplug stress test result, resetting core during enable/disable
operation can improve cpu hotplug stability. So let's set
SRC reset bit in imx_enable_cpu() for the core when its enable bit is
accessed.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/src.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/src.c b/arch/arm/mach-imx/src.c index 10a6b1a8c5ac..4754373e7e7d 100644 --- a/arch/arm/mach-imx/src.c +++ b/arch/arm/mach-imx/src.c @@ -91,6 +91,7 @@ void imx_enable_cpu(int cpu, bool enable) spin_lock(&scr_lock); val = readl_relaxed(src_base + SRC_SCR); val = enable ? val | mask : val & ~mask; + val |= 1 << (BP_SRC_SCR_CORE1_RST + cpu - 1); writel_relaxed(val, src_base + SRC_SCR); spin_unlock(&scr_lock); } |