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authorJaehoon Chung <jh80.chung@samsung.com>2011-02-25 11:08:13 +0900
committerChris Ball <cjb@laptop.org>2011-03-25 10:30:49 -0400
commita5289a433dd7b15df248d1f0272f52be38fe6971 (patch)
tree88b627a212992363d9f30b36c693b948a2bb5067 /drivers/mmc
parentcf5e23e1c27af4291cf90020c295756ba4dcf326 (diff)
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mmc: dw_mmc: set fixed burst in BMOD register
This patch uses the fixed burst bit when using an internal DMA controller. I found increased performance with IDMAC when this bit is set. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/dw_mmc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 5a614069cb0..87e1f57ec9b 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -316,7 +316,7 @@ static void dw_mci_idmac_stop_dma(struct dw_mci *host)
/* Stop the IDMAC running */
temp = mci_readl(host, BMOD);
- temp &= ~SDMMC_IDMAC_ENABLE;
+ temp &= ~(SDMMC_IDMAC_ENABLE | SDMMC_IDMAC_FB);
mci_writel(host, BMOD, temp);
}
@@ -385,7 +385,7 @@ static void dw_mci_idmac_start_dma(struct dw_mci *host, unsigned int sg_len)
/* Enable the IDMAC */
temp = mci_readl(host, BMOD);
- temp |= SDMMC_IDMAC_ENABLE;
+ temp |= SDMMC_IDMAC_ENABLE | SDMMC_IDMAC_FB;
mci_writel(host, BMOD, temp);
/* Start it running */