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Diffstat (limited to 'kernels/linux-libre-arm64/0004-fix-mvsdio-eMMC-timing.patch')
-rw-r--r--kernels/linux-libre-arm64/0004-fix-mvsdio-eMMC-timing.patch38
1 files changed, 38 insertions, 0 deletions
diff --git a/kernels/linux-libre-arm64/0004-fix-mvsdio-eMMC-timing.patch b/kernels/linux-libre-arm64/0004-fix-mvsdio-eMMC-timing.patch
new file mode 100644
index 000000000..791a546d6
--- /dev/null
+++ b/kernels/linux-libre-arm64/0004-fix-mvsdio-eMMC-timing.patch
@@ -0,0 +1,38 @@
+From 579d132a05177e4b85d3ff2321762948fd78b420 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
+