[U-Boot] [PATCH 04/12] powerpc: cache: define ARCH_DMA_MINALIGN for DMA buffer alignment

[Anton Staaf]

Signed-off-by: Anton Staaf <robotboy at chromium.org>
Cc: Mike Frysinger <vapier at gentoo.org>
Cc: Lukasz Majewski <l.majewski at samsung.com>
Cc: Wolfgang Denk <wd at denx.de>
Cc: Stefan Roese <sr at denx.de>

Change-Id: I5a007a515ef16e77003aaa74f9295ecc5104aa36
---
 arch/powerpc/include/asm/cache.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index 53e8d05..e6b8f69 100644
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -21,6 +21,12 @@
 #define L1_CACHE_BYTES          (1 << L1_CACHE_SHIFT)
 
 /*
+ * Use the L1 data cache line size value for the minimum DMA buffer alignment
+ * on PowerPC.
+ */
+#define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
+
+/*
  * For compatibility reasons support the CONFIG_SYS_CACHELINE_SIZE too
  */
 #ifndef CONFIG_SYS_CACHELINE_SIZE
-- 
1.7.3.1