After commit 52221610dd84 ("mmc: sdhci: Improve external VDD regulator
support"), for the VDD is supplied via external regulators, we ignore
the code to convert a VDD voltage request into one of the standard
SDHCI voltage levels, then program it in the SDHCI_POWER_CONTROL. This
brings two issues:
1. SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON quirk isn't handled properly any
more.
2. What's more, some controllers such as the sdhci-pxav3 used in
marvell berlin SoCs require the voltage levels programming in the
SDHCI_POWER_CONTROL register, even the VDD is supplied by external
regulator.
This patch restores the behavior when setting VDD through external
regulator by moving the call of mmc_regulator_set_ocr() to the end
of sdhci_set_power() function.
After this patch, the sdcard on Marvell Berlin SoCs work again.
Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxxx>
Fixes: 52221610dd84 ("mmc: sdhci: Improve external VDD ...")
---
drivers/mmc/host/sdhci.c | 19 ++++++-------------
1 file changed, 6 insertions(+), 13 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index b48565e..616aa90 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1274,19 +1274,6 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
struct mmc_host *mmc = host->mmc;
u8 pwr = 0;
- if (!IS_ERR(mmc->supply.vmmc)) {
- spin_unlock_irq(&host->lock);
- mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
- spin_lock_irq(&host->lock);
-
- if (mode != MMC_POWER_OFF)
- sdhci_writeb(host, SDHCI_POWER_ON, SDHCI_POWER_CONTROL);
- else
- sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
-
- return;
- }
-
if (mode != MMC_POWER_OFF) {
switch (1 << vdd) {
case MMC_VDD_165_195:
@@ -1345,6 +1332,12 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)
mdelay(10);
}
+
+ if (!IS_ERR(mmc->supply.vmmc)) {
+ spin_unlock_irq(&host->lock);
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
+ spin_lock_irq(&host->lock);
+ }
}
/*****************************************************************************\
--
2.6.3
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