package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch

   1 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
   2 new file mode 100644
   3 index 0000000..180b60b
   4 --- /dev/null
   5 +++ b/package/boot/uboot-sunxi/patches/004-sunxi-mmc-set-transfer-timeout-according-to-byte_cnt.patch
   6 @@ -0,0 +1,36 @@
   7 +From 8a5481e2e51a86e858c4f1481729421f26cc240c Mon Sep 17 00:00:00 2001
   8 +From: Yousong Zhou <yszhou4tech@gmail.com>
   9 +Date: Sat, 29 Aug 2015 21:26:11 +0800
  10 +Subject: [PATCH] sunxi: mmc: set transfer timeout according to byte_cnt.
  11 +
  12 +Originally a timeout value of 2 seconds was used regardless of the size
  13 +of data to be transfered.  This prevented slow devices from working
  14 +correctly while there was no much gain for faster devices, e.g. it takes
  15 +3708ms for a transfer of uImage of size 1899008 bytes.
  16 +
  17 +Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
  18 +---
  19 + drivers/mmc/sunxi_mmc.c |    6 ++++--
  20 + 1 file changed, 4 insertions(+), 2 deletions(-)
  21 +
  22 +diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
  23 +index e7ab828..7a990f7 100644
  24 +--- a/drivers/mmc/sunxi_mmc.c
  25 ++++ b/drivers/mmc/sunxi_mmc.c
  26 +@@ -257,9 +257,11 @@ static int mmc_trans_data_by_cpu(struct mmc *mmc, struct mmc_data *data)
  27 +       const uint32_t status_bit = reading ? SUNXI_MMC_STATUS_FIFO_EMPTY :
  28 +                                             SUNXI_MMC_STATUS_FIFO_FULL;
  29 +       unsigned i;
  30 +-      unsigned byte_cnt = data->blocksize * data->blocks;
  31 +-      unsigned timeout_msecs = 2000;
  32 +       unsigned *buff = (unsigned int *)(reading ? data->dest : data->src);
  33 ++      unsigned byte_cnt = data->blocksize * data->blocks;
  34 ++      unsigned timeout_msecs = byte_cnt >> 8;
  35 ++      if (timeout_msecs < 2000)
  36 ++              timeout_msecs = 2000;
  37 +
  38 +       /* Always read / write data through the CPU */
  39 +       setbits_le32(&mmchost->reg->gctrl, SUNXI_MMC_GCTRL_ACCESS_BY_AHB);
  40 +--
  41 +1.7.10.4
  42 +