Signed-off-by: Anton Staaf robotboy@chromium.org Cc: Mike Frysinger vapier@gentoo.org Cc: Lukasz Majewski l.majewski@samsung.com Cc: Albert ARIBAUD albert.u.boot@aribaud.net --- arch/arm/include/asm/cache.h | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h index d0518be..eef6a5a 100644 --- a/arch/arm/include/asm/cache.h +++ b/arch/arm/include/asm/cache.h @@ -42,4 +42,15 @@ static inline void invalidate_l2_cache(void) void l2_cache_enable(void); void l2_cache_disable(void);
+/* + * The current upper bound for ARM L1 data cache line sizes is 64 bytes. We + * use that value for aligning DMA buffers unless the board config has specified + * an alternate cache line size. + */ +#ifdef CONFIG_SYS_CACHELINE_SIZE +#define ARCH_DMA_MINALIGN CONFIG_SYS_CACHELINE_SIZE +#else +#define ARCH_DMA_MINALIGN 64 +#endif + #endif /* _ASM_CACHE_H */