linux-hardening - [PATCH 25/25] dts: unisoc: orangepi-i96: Enable SD Card

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Message-Id: <20250917-rda8810pl-drivers-v1-25-9ca9184ca977@mainlining.org>
Date: Wed, 17 Sep 2025 03:25:22 +0700
From: Dang Huynh via B4 Relay <devnull+dang.huynh.mainlining.org@...nel.org>
To: Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>, 
 Sebastian Reichel <sre@...nel.org>, Vinod Koul <vkoul@...nel.org>, 
 Kees Cook <kees@...nel.org>, "Gustavo A. R. Silva" <gustavoars@...nel.org>, 
 Ulf Hansson <ulf.hansson@...aro.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-unisoc@...ts.infradead.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-gpio@...r.kernel.org, linux-rtc@...r.kernel.org, 
 linux-clk@...r.kernel.org, linux-pm@...r.kernel.org, 
 dmaengine@...r.kernel.org, linux-hardening@...r.kernel.org, 
 linux-mmc@...r.kernel.org, Dang Huynh <dang.huynh@...nlining.org>
Subject: [PATCH 25/25] dts: unisoc: orangepi-i96: Enable SD Card

From: Dang Huynh <dang.huynh@...nlining.org>

Since we have a SDMMC controller, we can use the SD card slot on the
Orange Pi i96.

Signed-off-by: Dang Huynh <dang.huynh@...nlining.org>
---
 arch/arm/boot/dts/unisoc/rda8810pl-orangepi-i96.dts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/unisoc/rda8810pl-orangepi-i96.dts b/arch/arm/boot/dts/unisoc/rda8810pl-orangepi-i96.dts
index a1d61ef138d12bb3ecb4b24513cc1a7dfbac3107..fbb7b5be62051627e80d940cb5e5ccff9047c13c 100644
--- a/arch/arm/boot/dts/unisoc/rda8810pl-orangepi-i96.dts
+++ b/arch/arm/boot/dts/unisoc/rda8810pl-orangepi-i96.dts
@@ -6,6 +6,7 @@

 /dts-v1/;

+#include <dt-bindings/gpio/gpio.h>
 #include "rda8810pl.dtsi"

 / {
@@ -27,6 +28,13 @@ memory@...00000 {
 		reg = <0x80000000 0x10000000>;
 	};

+	vdd_sdmmc: regulator-fixed {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_sdmmc";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+	};
+
 	uart_clk: uart-clk {
 		compatible = "fixed-clock";
 		clock-frequency = <921600>;
@@ -34,6 +42,18 @@ uart_clk: uart-clk {
 	};
 };

+&mmc1 {
+	status = "okay";
+	no-sdio;
+	no-mmc;
+	bus-width = <4>;
+	max-frequency = <30000000>;
+	cd-gpios = <&gpiob 4 GPIO_ACTIVE_LOW>;
+	vmmc-supply = <&vdd_sdmmc>;
+	rda,mclk-adj = /bits/ 8 <1>;
+	rda,mclk-inv;
+};
+
 &uart3 {
 	status = "okay";
 	clocks = <&uart_clk>;

-- 
2.51.0