From: Cliff Cai <[email protected]> The hardcoded value doesn't really work for all cards.
Signed-off-by: Cliff Cai <[email protected]> Signed-off-by: Mike Frysinger <[email protected]> --- drivers/mmc/host/bfin_sdh.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c index f218a99..56f7b44 100644 --- a/drivers/mmc/host/bfin_sdh.c +++ b/drivers/mmc/host/bfin_sdh.c @@ -115,6 +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; + unsigned int cycle_ns, timeout; dev_dbg(mmc_dev(host->mmc), "%s enter flags: 0x%x\n", __func__, data->flags); host->data = data; @@ -135,8 +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) { -- 1.6.6 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
