linux-kernel - [PATCH v2 2/8] ARM: dts: microchip: sam9x60ek: Add power-supply properties for sdmmc nodes

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Message-ID: <20240205080027.4565-3-mihai.sain@microchip.com>
Date: Mon, 5 Feb 2024 10:00:20 +0200
From: Mihai Sain <mihai.sain@...rochip.com>
To: <claudiu.beznea@...on.dev>, <robh+dt@...nel.org>,
	<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
	<nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
	<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
CC: Mihai Sain <mihai.sain@...rochip.com>
Subject: [PATCH v2 2/8] ARM: dts: microchip: sam9x60ek: Add power-supply properties for sdmmc nodes

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 SAM9X60 MPU doesn't support the IO voltage signaling/switching required by the UHS sd-card.
In order to use the sd high-speed mode, keep vqmmc at 3V3.

Signed-off-by: Mihai Sain <mihai.sain@...rochip.com>
---
 arch/arm/boot/dts/microchip/at91-sam9x60ek.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/at91-sam9x60ek.dts b/arch/arm/boot/dts/microchip/at91-sam9x60ek.dts
index f3cbb675cea4..b19a0956dc97 100644
--- a/arch/arm/boot/dts/microchip/at91-sam9x60ek.dts
+++ b/arch/arm/boot/dts/microchip/at91-sam9x60ek.dts
@@ -560,6 +560,8 @@ &sdmmc0 {
 	status = "okay";
 	cd-gpios = <&pioA 23 GPIO_ACTIVE_LOW>;
 	disable-wp;
+	vmmc-supply = <&vdd1_3v3>;
+	vqmmc-supply = <&vdd1_3v3>;
 };
 
 &sdmmc1 {
@@ -568,6 +570,8 @@ &sdmmc1 {
 	pinctrl-0 = <&pinctrl_sdmmc1_default>;
 	no-1-8-v;
 	non-removable;
+	vmmc-supply = <&vdd1_3v3>;
+	vqmmc-supply = <&vdd1_3v3>;
 	status = "disabled"; /* Conflict with flx4. */
 };
 
-- 
2.43.0