linux-kernel - [PATCH v2 4/7] arm64: dts: actions: Add uSD and eMMC support for Bubblegum96

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Message-Id: <20190821024014.14070-5-manivannan.sadhasivam@linaro.org>
Date:   Wed, 21 Aug 2019 08:10:11 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     ulf.hansson@...aro.org, afaerber@...e.de, robh+dt@...nel.org,
        sboyd@...nel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        thomas.liau@...ions-semi.com, linux-actions@...ts.infradead.org,
        linus.walleij@...aro.org, linux-clk@...r.kernel.org,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v2 4/7] arm64: dts: actions: Add uSD and eMMC support for Bubblegum96

Add uSD and eMMC support for Bubblegum96 board based on Actions Semi
Owl SoC. SD0 is connected to uSD slot and SD2 is connected to eMMC.
Since there is no PMIC support added yet, fixed regulator has been
used as a regulator node.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
 .../boot/dts/actions/s900-bubblegum-96.dts    | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/arch/arm64/boot/dts/actions/s900-bubblegum-96.dts b/arch/arm64/boot/dts/actions/s900-bubblegum-96.dts
index 732daaa6e9d3..92376b71cb8f 100644
--- a/arch/arm64/boot/dts/actions/s900-bubblegum-96.dts
+++ b/arch/arm64/boot/dts/actions/s900-bubblegum-96.dts
@@ -12,6 +12,9 @@
 	model = "Bubblegum-96";
 
 	aliases {
+		mmc0 = &mmc0;
+		mmc1 = &mmc1;
+		mmc2 = &mmc2;
 		serial5 = &uart5;
 	};
 
@@ -23,6 +26,22 @@
 		device_type = "memory";
 		reg = <0x0 0x0 0x0 0x80000000>;
 	};
+
+	vcc_3v1: vcc-3v1 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.1V";
+		regulator-min-microvolt = <3100000>;
+		regulator-max-microvolt = <3100000>;
+		regulator-always-on;
+	};
+
+	sd_vcc: sd-vcc {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.1V";
+		regulator-min-microvolt = <3100000>;
+		regulator-max-microvolt = <3100000>;
+		regulator-always-on;
+	};
 };
 
 &i2c0 {
@@ -241,6 +260,47 @@
 			bias-pull-up;
 		};
 	};
+
+	mmc0_default: mmc0_default {
+		pinmux {
+			groups = "sd0_d0_mfp", "sd0_d1_mfp", "sd0_d2_d3_mfp",
+				 "sd0_cmd_mfp", "sd0_clk_mfp";
+			function = "sd0";
+		};
+	};
+
+	mmc2_default: mmc2_default {
+		pinmux {
+			groups = "nand0_d0_ceb3_mfp";
+			function = "sd2";
+		};
+	};
+};
+
+/* uSD */
+&mmc0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_default>;
+	no-sdio;
+	no-mmc;
+	no-1-8-v;
+	cd-gpios = <&pinctrl 120 GPIO_ACTIVE_LOW>;
+	bus-width = <4>;
+	vmmc-supply = <&sd_vcc>;
+	vqmmc-supply = <&sd_vcc>;
+};
+
+/* eMMC */
+&mmc2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc2_default>;
+	no-sdio;
+	no-sd;
+	non-removable;
+	bus-width = <8>;
+	vmmc-supply = <&vcc_3v1>;
 };
 
 &timer {
-- 
2.17.1