diff options
Diffstat (limited to 'target/linux/kirkwood/patches/002-mvsdio_delay.patch')
| -rw-r--r-- | target/linux/kirkwood/patches/002-mvsdio_delay.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/target/linux/kirkwood/patches/002-mvsdio_delay.patch b/target/linux/kirkwood/patches/002-mvsdio_delay.patch new file mode 100644 index 0000000000..ee730306aa --- /dev/null +++ b/target/linux/kirkwood/patches/002-mvsdio_delay.patch @@ -0,0 +1,46 @@ +--- a/drivers/mmc/core/sd.c ++++ b/drivers/mmc/core/sd.c +@@ -263,6 +263,15 @@ static int mmc_switch_hs(struct mmc_card + return -ENOMEM; + } + ++ /* ++ * Some SDHC cards, notably those with a Sandisk SD controller ++ * (also found in Kingston products) need a bit of slack ++ * before successfully handling the SWITCH command. So far, ++ * cards identifying themselves as "SD04G" and "SD08G" are ++ * affected ++ */ ++ udelay(1000); ++ + err = mmc_sd_switch(card, 1, 0, 1, status); + if (err) + goto out; +--- a/drivers/mmc/host/mvsdio.c ++++ b/drivers/mmc/host/mvsdio.c +@@ -620,9 +620,11 @@ static void mvsd_set_ios(struct mmc_host + if (ios->bus_width == MMC_BUS_WIDTH_4) + ctrl_reg |= MVSD_HOST_CTRL_DATA_WIDTH_4_BITS; + ++#if 0 + if (ios->timing == MMC_TIMING_MMC_HS || + ios->timing == MMC_TIMING_SD_HS) + ctrl_reg |= MVSD_HOST_CTRL_HI_SPEED_EN; ++#endif + + host->ctrl = ctrl_reg; + mvsd_write(MVSD_HOST_CTRL, ctrl_reg); +--- a/drivers/mmc/core/core.c ++++ b/drivers/mmc/core/core.c +@@ -286,9 +286,9 @@ void mmc_set_data_timeout(struct mmc_dat + * The limit is really 250 ms, but that is + * insufficient for some crappy cards. + */ +- limit_us = 300000; ++ limit_us = 500000; + else +- limit_us = 100000; ++ limit_us = 200000; + + /* + * SDHC cards always use these fixed values. |