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- From 14c5a5d97fab02342816c128ebcd2e581a892a80 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 74a0a7fbbf7f..92eadb116762 100644
- --- a/drivers/mmc/host/mvsdio.c
- +++ b/drivers/mmc/host/mvsdio.c
- @@ -90,7 +90,7 @@ 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",
- @@ -613,6 +613,8 @@ 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));
- --
- 2.23.0
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