mtd: nand: mxs: fix cache alignment for cache lines >32
Currently the command buffer gets allocated with a size of 32 bytes.
This causes warning messages on systems with cache lines bigger than
32 bytes:
CACHE: Misaligned operation at range [9df17a00, 9df17a20]
Define command buffer to be at least 32 bytes, but more if cache
line is bigger.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
diff --git a/drivers/mtd/nand/mxs_nand.c b/drivers/mtd/nand/mxs_nand.c
index 94fc5c1..4bf564e 100644
--- a/drivers/mtd/nand/mxs_nand.c
+++ b/drivers/mtd/nand/mxs_nand.c
@@ -37,7 +37,12 @@
#endif
#define MXS_NAND_METADATA_SIZE 10
#define MXS_NAND_BITS_PER_ECC_LEVEL 13
+
+#if !defined(CONFIG_SYS_CACHELINE_SIZE) || CONFIG_SYS_CACHELINE_SIZE < 32
#define MXS_NAND_COMMAND_BUFFER_SIZE 32
+#else
+#define MXS_NAND_COMMAND_BUFFER_SIZE CONFIG_SYS_CACHELINE_SIZE
+#endif
#define MXS_NAND_BCH_TIMEOUT 10000