39 lines
1.4 KiB
Diff
39 lines
1.4 KiB
Diff
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From bca0f6d98bb3003178d962f83ba795d524460346 Mon Sep 17 00:00:00 2001
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From: Kevin Mihelich <kevin@archlinuxarm.org>
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Date: Fri, 5 Sep 2014 15:43:56 -0600
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Subject: [PATCH 04/14] fix mvsdio eMMC timing
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These changes from Globalscale change the MMC timing to allow the eMMC versions
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of the Mirabox and SMILE Plug to work.
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Signed-off-by: Kevin Mihelich <kevin@archlinuxarm.org>
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---
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drivers/mmc/host/mvsdio.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
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index e22bbff89c8d..6b30c850ce07 100644
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--- a/drivers/mmc/host/mvsdio.c
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+++ b/drivers/mmc/host/mvsdio.c
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@@ -93,7 +93,7 @@ static int mvsd_setup_data(struct mvsd_host *host, struct mmc_data *data)
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tmout_index = fls(tmout - 1) - 12;
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if (tmout_index < 0)
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tmout_index = 0;
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- if (tmout_index > MVSD_HOST_CTRL_TMOUT_MAX)
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+// if (tmout_index > MVSD_HOST_CTRL_TMOUT_MAX) //by steven, try to setup the timeout to maximum value
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tmout_index = MVSD_HOST_CTRL_TMOUT_MAX;
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dev_dbg(host->dev, "data %s at 0x%08x: blocks=%d blksz=%d tmout=%u (%d)\n",
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@@ -616,6 +616,8 @@ static void mvsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
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u32 m = DIV_ROUND_UP(host->base_clock, ios->clock) - 1;
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if (m > MVSD_BASE_DIV_MAX)
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m = MVSD_BASE_DIV_MAX;
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+ if(ios->clock==50000000 ) //by steven
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+ m=1;
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mvsd_write(MVSD_CLK_DIV, m);
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host->clock = ios->clock;
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host->ns_per_clk = 1000000000 / (host->base_clock / (m+1));
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--
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2.18.0
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