diff mbox series

[v3,4/8] ARM: dts: microchip: sama5d27_wlsom1: Add power-supply property for sdmmc1 node

Message ID 20240206120322.88907-5-mihai.sain@microchip.com (mailing list archive)
State New, archived
Headers show
Series Add power-supply properties for sdmmc nodes on Microchip boards | expand

Commit Message

Mihai Sain Feb. 6, 2024, 12:03 p.m. UTC 
The sdmmc1 controller is 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_wlsom1.dtsi | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

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 {