[PATCH v3 8/8] ARM: dts: microchip: sama5d2_xplained: Add power-supply property for sdmmc0 node
Mihai Sain
mihai.sain at microchip.com
Tue Feb 6 04:03:22 PST 2024
The sdmmc0 controller is powered from 3.3V regulator.
Add vmmc-supply and vqmmc-supply properties to sdmmc0 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 at microchip.com>
---
arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts
index 6680031387e8..9b7e56790a5a 100644
--- a/arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama5d2_xplained.dts
@@ -67,6 +67,8 @@ sdmmc0: sdio-host at a0000000 {
pinctrl-0 = <&pinctrl_sdmmc0_default>;
non-removable;
mmc-ddr-3_3v;
+ vmmc-supply = <&vdd_3v3_reg>;
+ vqmmc-supply = <&vdd_3v3_reg>;
status = "okay";
};
--
2.43.0
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