linux-kernel - [PATCH 3/3] arm64: dts: st: add SD-card support on STM32MP257F-EV1 board

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Message-ID: <20230904132212.157405-4-yann.gautier@foss.st.com>
Date:   Mon, 4 Sep 2023 15:22:12 +0200
From:   Yann Gautier <yann.gautier@...s.st.com>
To:     Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
CC:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Christophe Kerello <christophe.kerello@...s.st.com>,
        Yann Gautier <yann.gautier@...s.st.com>
Subject: [PATCH 3/3] arm64: dts: st: add SD-card support on STM32MP257F-EV1 board

Add the configuration node for SD-card support on STM32MP257F-EV1 board.
For the moment it uses a fixed regulator for vmmc, and vqmmc is skipped
until regulator driver is available.

Signed-off-by: Yann Gautier <yann.gautier@...s.st.com>
---
 arch/arm64/boot/dts/st/stm32mp257f-ev1.dts | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
index 39b4726cc0986..6c3b83c2b48fa 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
@@ -6,6 +6,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/gpio/gpio.h>
 #include "stm32mp257.dtsi"
 #include "stm32mp25xf.dtsi"
 #include "stm32mp25-pinctrl.dtsi"
@@ -39,6 +40,27 @@ fw@...00000 {
 			no-map;
 		};
 	};
+
+	vdd_sdcard: vdd-sdcard {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_sdcard";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+};
+
+&sdmmc1 {
+	pinctrl-names = "default", "opendrain", "sleep";
+	pinctrl-0 = <&sdmmc1_b4_pins_a>;
+	pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
+	pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
+	cd-gpios = <&gpiod 9 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+	disable-wp;
+	st,neg-edge;
+	bus-width = <4>;
+	vmmc-supply = <&vdd_sdcard>;
+	status = "okay";
 };
 
 &usart2 {
-- 
2.34.1