Received-SPF: pass (google.com: domain of linux-kernel+bounces-52181-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223;
From: Mihai Sain <mihai.sain@microchip.com>
To: <claudiu.beznea@tuxon.dev>, <robh+dt@kernel.org>,
	<krzysztof.kozlowski+dt@linaro.org>, <conor+dt@kernel.org>,
	<nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>,
	<devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
CC: Mihai Sain <mihai.sain@microchip.com>
Subject: [PATCH v2 4/8] ARM: dts: microchip: sama5d27_wlsom1: Add power-supply property for sdmmc1 node
Date: Mon, 5 Feb 2024 10:00:22 +0200
Message-ID: <20240205080027.4565-5-mihai.sain@microchip.com>
In-Reply-To: <20240205080027.4565-1-mihai.sain@microchip.com>
References: <20240205080027.4565-1-mihai.sain@microchip.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain

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@microchip.com>
---
 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