| Message ID | 20240205080027.4565-4-mihai.sain@microchip.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add power-supply properties for sdmmc nodes on Microchip boards | expand |
diff --git a/arch/arm/boot/dts/microchip/at91-sama5d27_som1_ek.dts b/arch/arm/boot/dts/microchip/at91-sama5d27_som1_ek.dts index f3ffb8f01d8a..255ee0640133 100644 --- a/arch/arm/boot/dts/microchip/at91-sama5d27_som1_ek.dts +++ b/arch/arm/boot/dts/microchip/at91-sama5d27_som1_ek.dts @@ -56,6 +56,8 @@ sdmmc0: sdio-host@a0000000 { bus-width = <8>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sdmmc0_default>; + vmmc-supply = <&vddin_3v3>; + vqmmc-supply = <&vddin_3v3>; status = "okay"; }; @@ -63,6 +65,8 @@ sdmmc1: sdio-host@b0000000 { bus-width = <4>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sdmmc1_default>; + vmmc-supply = <&vddin_3v3>; + vqmmc-supply = <&vddin_3v3>; status = "okay"; };
The sdmmc0 and sdmmc1 controllers are powered from 3.3V regulator. Add vmmc-supply and vqmmc-supply properties to sdmmc nodes. The sdmmc controller from SAMA5D2 MPU has support for IO voltage signaling/switching required by the UHS sd-card. In order to avoid the issues from the tuning procedure required by the UHS cards, keep the vqmmc at 3V3 to use the sd high-speed mode. Signed-off-by: Mihai Sain <mihai.sain@microchip.com> --- arch/arm/boot/dts/microchip/at91-sama5d27_som1_ek.dts | 4 ++++ 1 file changed, 4 insertions(+)