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ar71xx: add flush reset register writes, should fix restart issues (#17839)

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 43777
This commit is contained in:
Felix Fietkau 2014-12-26 12:36:38 +00:00
parent a96afecf5c
commit fa3cb9fa5c
1 changed files with 10 additions and 0 deletions
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10
target/linux/ar71xx/patches-3.14/728-MIPS-ath79-fix-restart.patch
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@ -8,3 +8,13 @@
ath79_device_reset_set(AR71XX_RESET_FULL_CHIP); ath79_device_reset_set(AR71XX_RESET_FULL_CHIP);
for (;;) for (;;)
if (cpu_wait) if (cpu_wait)
--- a/arch/mips/include/asm/mach-ath79/ath79.h
+++ b/arch/mips/include/asm/mach-ath79/ath79.h
@@ -144,6 +144,7 @@ static inline u32 ath79_pll_rr(unsigned
static inline void ath79_reset_wr(unsigned reg, u32 val)
{
__raw_writel(val, ath79_reset_base + reg);
+ (void) __raw_readl(ath79_reset_base + reg); /* flush */
}
static inline u32 ath79_reset_rr(unsigned reg)