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| author | Wenchao Chen <wenchao.chen@unisoc.com> | 2022-11-30 20:13:28 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2022-12-01 11:28:39 +0100 |
| commit | dd30dcfa7a74a06f8dcdab260d8d5adf32f17333 (patch) | |
| tree | adcc8d5b02d0e0247f181cfaecd2994969f96aa6 | |
| parent | c981cdfb9925f64a364f13c2b4f98f877308a408 (diff) | |
| download | lwn-dd30dcfa7a74a06f8dcdab260d8d5adf32f17333.tar.gz lwn-dd30dcfa7a74a06f8dcdab260d8d5adf32f17333.zip | |
mmc: sdhci-sprd: Fix no reset data and command after voltage switch
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>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221130121328.25553-1-wenchao.chen@unisoc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/host/sdhci-sprd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c index b92a408f138d..bec3f9e3cd3f 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: @@ -498,6 +498,8 @@ static int sdhci_sprd_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios) /* Wait for 300 ~ 500 us for pin state stable */ usleep_range(300, 500); + +reset: sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); return 0; |