diff options
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/dram.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-sunxi/dram.h b/arch/arm/include/asm/arch-sunxi/dram.h index 9072e68229..18924f5c9c 100644 --- a/arch/arm/include/asm/arch-sunxi/dram.h +++ b/arch/arm/include/asm/arch-sunxi/dram.h @@ -12,6 +12,7 @@ #ifndef _SUNXI_DRAM_H #define _SUNXI_DRAM_H +#include <asm/io.h> #include <linux/types.h> /* dram regs definition */ @@ -23,4 +24,17 @@ unsigned long sunxi_dram_init(void); +/* + * Wait up to 1s for value to be set in given part of reg. + */ +static inline void mctl_await_completion(u32 *reg, u32 mask, u32 val) +{ + unsigned long tmo = timer_get_us() + 1000000; + + while ((readl(reg) & mask) != val) { + if (timer_get_us() > tmo) + panic("Timeout initialising DRAM\n"); + } +} + #endif /* _SUNXI_DRAM_H */ |