The card write threshold is applicable for HS400 mode only, so it should return back except HS400 timing mode.
The card read threshold is also required for HS400 mode as the host controller incorrectly samples the data if the card clock stops within a block transfer. Signed-off-by: Huanlin.Ke <[email protected]> Signed-off-by: zhangbo_a <[email protected]> --- drivers/mmc/host/dw_mmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 623f4d2..d4e6983 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1065,7 +1065,7 @@ 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)) + (host->timing != MMC_TIMING_MMC_HS400)) return; if (data->flags & MMC_DATA_WRITE) @@ -1074,6 +1074,7 @@ 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_MMC_HS400 && host->timing != MMC_TIMING_UHS_SDR104) goto disable; -- 2.7.4
