Messages in this thread Patch in this message | | | From | Wenchao Chen <> | Subject | [PATCH] mmc: sdhci-sprd: Fix no reset data and command after voltage switch | Date | Wed, 30 Nov 2022 16:02:24 +0800 |
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After switching the voltage, no reset data and command will cause CMD2 timeout.
Fixes: 29ca763fc26f ("mmc: sdhci-sprd: Add pin control support for voltage switch") Signed-off-by: Wenchao Chen <wenchao.chen@unisoc.com> --- drivers/mmc/host/sdhci-sprd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c index b92a408f138d..464508be8ec8 100644 --- a/drivers/mmc/host/sdhci-sprd.c +++ b/drivers/mmc/host/sdhci-sprd.c @@ -470,7 +470,7 @@ static int sdhci_sprd_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios) } if (IS_ERR(sprd_host->pinctrl)) - return 0; + goto reset; switch (ios->signal_voltage) { case MMC_SIGNAL_VOLTAGE_180: @@ -496,6 +496,7 @@ static int sdhci_sprd_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios) break; } +reset: /* Wait for 300 ~ 500 us for pin state stable */ usleep_range(300, 500); sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); -- 2.17.1
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