diff options
Diffstat (limited to 'drivers/mmc/host/bfin_sdh.c')
| -rw-r--r-- | drivers/mmc/host/bfin_sdh.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c index 3343a57355cc..56f7b448b911 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); |