Message ID | 20220623174215.299989-2-frieder@fris.de |
---|---|
State | Superseded |
Delegated to: | Stefano Babic |
Headers | show |
Series | [1/2] pmic: pca9450: Add optional SD_VSEL GPIO for LDO5 | expand |
On 23/06/2022 14:42, Frieder Schrempf wrote: > From: Frieder Schrempf <frieder.schrempf@kontron.de> > > Currently accessing the SD card on USDHC2 fails with: > > => mmc dev 1 > Card did not respond to voltage select! : -110 > > This is due to the fact that UHS modes are enabled in the defconfig > and the devicetree, but the referenced LDO5 regulator (reg_nvcc_sd) > is not available to switch the data lines from 3.3V to 1.8V mode. > > By enabling the regulator driver the vqmmc-supply is now available > and the SD card works also in high speed modes: > > => mmc dev 1 > switch to partitions #0, OK > mmc1 is current device > > Please note that the board has a GPIO connected to the SD_VSEL signal > of the PMIC. As the driver uses the LDO5CTRL_H register to set the > voltage, we need to make sure that this GPIO (GPIO01_IO4) is set to > a high level. > > Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Reviewed-by: Fabio Estevam <festevam@denx.de>
diff --git a/configs/kontron-sl-mx8mm_defconfig b/configs/kontron-sl-mx8mm_defconfig index 2e9d52522b2..727f99f0063 100644 --- a/configs/kontron-sl-mx8mm_defconfig +++ b/configs/kontron-sl-mx8mm_defconfig @@ -99,6 +99,7 @@ CONFIG_DM_PMIC=y CONFIG_DM_PMIC_PCA9450=y CONFIG_SPL_DM_PMIC_PCA9450=y CONFIG_DM_REGULATOR=y +CONFIG_DM_REGULATOR_PCA9450=y CONFIG_DM_RTC=y CONFIG_RTC_RV8803=y CONFIG_CONS_INDEX=2