The sdmmc1 controller is powered from 3.3V regulator.
Add vmmc-supply and vqmmc-supply properties to sdmmc1 node.
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@xxxxxxxxxxxxx>
---
arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1.dtsi b/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1.dtsi
index 4617805c7748..96819ea24cbd 100644
--- a/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1.dtsi
+++ b/arch/arm/boot/dts/microchip/at91-sama5d27_wlsom1.dtsi
@@ -368,6 +368,8 @@ &sdmmc1 {
no-1-8-v;
non-removable;
bus-width = <4>;
+ vmmc-supply = <&vdd_3v3>;
+ vqmmc-supply = <&vdd_3v3>;
status = "okay";
wilc: wifi@0 {
--
2.43.0
