From 279ad74e38e3c692eab7c59fae909fe22ea5d1dd Mon Sep 17 00:00:00 2001 From: Kevin Mihelich <kevin@archlinuxarm.org> Date: Fri, 5 Sep 2014 15:43:56 -0600 Subject: [PATCH 4/9] fix mvsdio eMMC timing These changes from Globalscale change the MMC timing to allow the eMMC versions of the Mirabox and SMILE Plug to work. Signed-off-by: Kevin Mihelich <kevin@archlinuxarm.org> --- drivers/mmc/host/mvsdio.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c index a448498..14441a6 100644 --- a/drivers/mmc/host/mvsdio.c +++ b/drivers/mmc/host/mvsdio.c @@ -96,7 +96,7 @@ static int mvsd_setup_data(struct mvsd_host *host, struct mmc_data *data) tmout_index = fls(tmout - 1) - 12; if (tmout_index < 0) tmout_index = 0; - if (tmout_index > MVSD_HOST_CTRL_TMOUT_MAX) +// if (tmout_index > MVSD_HOST_CTRL_TMOUT_MAX) //by steven, try to setup the timeout to maximum value tmout_index = MVSD_HOST_CTRL_TMOUT_MAX; dev_dbg(host->dev, "data %s at 0x%08x: blocks=%d blksz=%d tmout=%u (%d)\n", @@ -618,6 +618,8 @@ static void mvsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) u32 m = DIV_ROUND_UP(host->base_clock, ios->clock) - 1; if (m > MVSD_BASE_DIV_MAX) m = MVSD_BASE_DIV_MAX; + if(ios->clock==50000000 ) //by steven + m=1; mvsd_write(MVSD_CLK_DIV, m); host->clock = ios->clock; host->ns_per_clk = 1000000000 / (host->base_clock / (m+1)); -- 2.6.4