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authorZoltan Herpai <wigyori@uid0.hu>2015-09-13 15:11:27 +0000
committerZoltan Herpai <wigyori@uid0.hu>2015-09-13 15:11:27 +0000
commitcd73603269ddeeddb633b3199c6e24f6e82acdf0 (patch)
tree44f5d838a801fa4d90e51a78f1e789544631720d /package
parente1ec8b76e9e045695f859a0430daaeba41fb3a04 (diff)
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packages: uboot-sunxi: fix mmc transfer timeout for slow sdcards.
This should fix a issue reported in ticket #20387. Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com> SVN-Revision: 46894
Diffstat (limited to 'package')
-rw-r--r--package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch42
1 files changed, 42 insertions, 0 deletions
diff --git a/package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch b/package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch
new file mode 100644
index 0000000000..964aa577b1
--- /dev/null
+++ b/package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch
@@ -0,0 +1,42 @@
+diff --git a/package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch b/package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch
+new file mode 100644
+index 0000000..180b60b
+--- /dev/null
++++ b/package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch
+@@ -0,0 +1,36 @@
++From 8a5481e2e51a86e858c4f1481729421f26cc240c Mon Sep 17 00:00:00 2001
++From: Yousong Zhou <yszhou4tech@gmail.com>
++Date: Sat, 29 Aug 2015 21:26:11 +0800
++Subject: [PATCH] sunxi: mmc: set transfer timeout according to byte_cnt.
++
++Originally a timeout value of 2 seconds was used regardless of the size
++of data to be transfered. This prevented slow devices from working
++correctly while there was no much gain for faster devices, e.g. it takes
++3708ms for a transfer of uImage of size 1899008 bytes.
++
++Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
++---
++ drivers/mmc/sunxi_mmc.c | 6 ++++--
++ 1 file changed, 4 insertions(+), 2 deletions(-)
++
++diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
++index e7ab828..7a990f7 100644
++--- a/drivers/mmc/sunxi_mmc.c
+++++ b/drivers/mmc/sunxi_mmc.c
++@@ -257,9 +257,11 @@ static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data)
++ const uint32_t status_bit = reading ? SUNXI_MMC_STATUS_FIFO_EMPTY :
++ SUNXI_MMC_STATUS_FIFO_FULL;
++ unsigned i;
++- unsigned byte_cnt = data->blocksize * data->blocks;
++- unsigned timeout_msecs = 2000;
++ unsigned *buff = (unsigned int *)(reading ? data->dest : data->src);
+++ unsigned byte_cnt = data->blocksize * data->blocks;
+++ unsigned timeout_msecs = byte_cnt >> 8;
+++ if (timeout_msecs < 2000)
+++ timeout_msecs = 2000;
++
++ /* Always read / write data through the CPU */
++ setbits_le32(&mmchost->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB);
++--
++1.7.10.4
++