[PATCH 1/1 v2] i.MX SDMA: Fix burstsize settings
Philippe Rétornaz
philippe.retornaz at epfl.ch
Tue Jan 24 08:22:01 EST 2012
Commit 6584cb88 (ARM i.MX dma: Fix burstsize settings) fixed
the mxcmmc driver but forgot to fix the SDMA driver to handle the
correct burtsize.
This make the SD card access works again with DMA on i.MX31 boards.
Signed-off-by: Philippe Rétornaz <philippe.retornaz at epfl.ch>
Tested-by: Sascha Hauer <s.hauer at pengutronix.de>
Acked-by: Sascha Hauer <s.hauer at pengutronix.de>
---
drivers/dma/imx-sdma.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index f993955..c193dac 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1095,11 +1095,13 @@ static int sdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
case DMA_SLAVE_CONFIG:
if (dmaengine_cfg->direction == DMA_FROM_DEVICE) {
sdmac->per_address = dmaengine_cfg->src_addr;
- sdmac->watermark_level = dmaengine_cfg->src_maxburst;
+ sdmac->watermark_level = dmaengine_cfg->src_maxburst *
+ dmaengine_cfg->src_addr_width;
sdmac->word_size = dmaengine_cfg->src_addr_width;
} else {
sdmac->per_address = dmaengine_cfg->dst_addr;
- sdmac->watermark_level = dmaengine_cfg->dst_maxburst;
+ sdmac->watermark_level = dmaengine_cfg->dst_maxburst *
+ dmaengine_cfg->dst_addr_width;
sdmac->word_size = dmaengine_cfg->dst_addr_width;
}
return sdma_config_channel(sdmac);
--
1.6.3.3
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