ARM: 6722/1: SPEAr: sp810: switch to slow mode before reset

In sysctl_soft_reset(), switch to slow mode before resetting the system
via the system controller.  This is required.

Reviewed-by: Stanley Miao <stanley.miao@windriver.com>
Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/include/asm/hardware/sp810.h b/arch/arm/include/asm/hardware/sp810.h
index 721847dc68abd0ea3d5590af9e9fe09d48277363..e0d1c0cfa54816fda646b9d1b2996d9e1176fff6 100644 (file)
--- a/arch/arm/include/asm/hardware/sp810.h
+++ b/arch/arm/include/asm/hardware/sp810.h
@@ -58,6 +58,9 @@
 
 static inline void sysctl_soft_reset(void __iomem *base)
 {
+       /* switch to slow mode */
+       writel(0x2, base + SCCTRL);
+
        /* writing any value to SCSYSSTAT reg will reset system */
        writel(0, base + SCSYSSTAT);
 }