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Subject[PATCH v2 6/8] ARM: dts: microchip: sama5d29_curiosity: Add power-supply properties for sdmmc nodes
Date
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-sama5d29_curiosity.dts | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts b/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts
index 6b02b7bcfd49..4a86597d089a 100644
--- a/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama5d29_curiosity.dts
@@ -504,6 +504,8 @@ &sdmmc0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdmmc0_default>;
disable-wp;
+ vmmc-supply = <&vdd_3v3>;
+ vqmmc-supply = <&vdd_3v3>;
status = "okay";
};

@@ -512,6 +514,8 @@ &sdmmc1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdmmc1_default>;
disable-wp;
+ vmmc-supply = <&vdd_3v3>;
+ vqmmc-supply = <&vdd_3v3>;
status = "okay";
};

--
2.43.0

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