redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

mmc: dw_mmc: fix card threshold control configuration 

Card write threshold control is supposed to be set since controller
version 2.80a for data write in HS400 mode and data read in
HS200/HS400/SDR104 mode. However the current code returns without
configuring it in the case of data writing in HS400 mode.
Meanwhile the patch fixes that the current code goes to
'disable' when doing data reading in HS400 mode.

Fixes: 7e4bf1bc95 ("mmc: dw_mmc: add the card write threshold for HS400 mode")
Signed-off-by: Qing Xia <xiaqing17@hisilicon.com>
Cc: stable@vger.kernel.org # v4.8+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
hifive-unleashed-5.1
x00270170 2018-07-03 15:06:27 +08:00 committed by Ulf Hansson
parent 60feca8f59
commit 7a6b9f4d60
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/mmc/host/dw_mmc.c
View File

@ -1065,8 +1065,8 @@ static void dw_mci_ctrl_thld(struct dw_mci *host, struct mmc_data *data)
* It's used when HS400 mode is enabled.
*/
if (data->flags & MMC_DATA_WRITE &&
!(host->timing != MMC_TIMING_MMC_HS400))
return;
host->timing != MMC_TIMING_MMC_HS400)
goto disable;
if (data->flags & MMC_DATA_WRITE)
enable = SDMMC_CARD_WR_THR_EN;
@ -1074,7 +1074,8 @@ static void dw_mci_ctrl_thld(struct dw_mci *host, struct mmc_data *data)
enable = SDMMC_CARD_RD_THR_EN;
if (host->timing != MMC_TIMING_MMC_HS200 &&
host->timing != MMC_TIMING_UHS_SDR104)
host->timing != MMC_TIMING_UHS_SDR104 &&
host->timing != MMC_TIMING_MMC_HS400)
goto disable;
blksz_depth = blksz / (1 << host->data_shift);