mmc: sh_mmcif: Configure DMA slave bus width

The data register is 4 bytes wide, hardcode the DMA transfer size to
4 bytes in both directions.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 863d21ee4a2f..d11708c815d7 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -418,10 +418,13 @@ sh_mmcif_request_dma_one(struct sh_mmcif_host *host,
         cfg.slave_id = slave_id;
         cfg.direction = direction;
 
-        if (direction == DMA_DEV_TO_MEM)
+        if (direction == DMA_DEV_TO_MEM) {
                 cfg.src_addr = res->start + MMCIF_CE_DATA;
-        else
+                cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+        } else {
                 cfg.dst_addr = res->start + MMCIF_CE_DATA;
+                cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+        }
 
         ret = dmaengine_slave_config(chan, &cfg);
         if (ret < 0) {