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 <[e-mail]>
Signed-off-by: Shiraz Hashim <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

arch/arm/include/asm/hardware/sp810.h

···
 
 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);
 }