Commit 6050d181 authored Oct 09, 2013 by Shawn Guo

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>

parent fcd75f92

arch/arm/mach-imx/src.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}