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path: root/drivers/mmc/host/bfin_sdh.c
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Diffstat (limited to 'drivers/mmc/host/bfin_sdh.c')
-rw-r--r--drivers/mmc/host/bfin_sdh.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c
index 3343a57355c..56f7b448b91 100644
--- a/drivers/mmc/host/bfin_sdh.c
+++ b/drivers/mmc/host/bfin_sdh.c
@@ -115,7 +115,7 @@ static int sdh_setup_data(struct sdh_host *host, struct mmc_data *data)
unsigned int length;
unsigned int data_ctl;
unsigned int dma_cfg;
- struct scatterlist *sg;
+ unsigned int cycle_ns, timeout;
dev_dbg(mmc_dev(host->mmc), "%s enter flags: 0x%x\n", __func__, data->flags);
host->data = data;
@@ -136,8 +136,11 @@ static int sdh_setup_data(struct sdh_host *host, struct mmc_data *data)
data_ctl |= ((ffs(data->blksz) - 1) << 4);
bfin_write_SDH_DATA_CTL(data_ctl);
-
- bfin_write_SDH_DATA_TIMER(0xFFFF);
+ /* the time of a host clock period in ns */
+ cycle_ns = 1000000000 / (get_sclk() / (2 * (host->clk_div + 1)));
+ timeout = data->timeout_ns / cycle_ns;
+ timeout += data->timeout_clks;
+ bfin_write_SDH_DATA_TIMER(timeout);
SSYNC();
if (data->flags & MMC_DATA_READ) {
@@ -151,6 +154,7 @@ static int sdh_setup_data(struct sdh_host *host, struct mmc_data *data)
#if defined(CONFIG_BF54x)
dma_cfg |= DMAFLOW_ARRAY | NDSIZE_5 | RESTART | WDSIZE_32 | DMAEN;
{
+ struct scatterlist *sg;
int i;
for_each_sg(data->sg, sg, host->dma_len, i) {
host->sg_cpu[i].start_addr = sg_dma_address(sg);