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

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Message-Id: <20190608195317.6336-5-manivannan.sadhasivam@linaro.org>
Date:   Sun,  9 Jun 2019 01:23:14 +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 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    | 50 +++++++++++++++++++
 1 file changed, 50 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..3b596d72de25 100644
--- a/arch/arm64/boot/dts/actions/s900-bubblegum-96.dts
+++ b/arch/arm64/boot/dts/actions/s900-bubblegum-96.dts
@@ -13,6 +13,9 @@
 
 	aliases {
 		serial5 = &uart5;
+		mmc0 = &mmc0;
+		mmc1 = &mmc1;
+		mmc2 = &mmc2;
 	};
 
 	chosen {
@@ -23,6 +26,14 @@
 		device_type = "memory";
 		reg = <0x0 0x0 0x0 0x80000000>;
 	};
+
+	reg_3p1v: regulator-3p1v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.1V";
+		regulator-min-microvolt = <3100000>;
+		regulator-max-microvolt = <3100000>;
+		regulator-always-on;
+	};
 };
 
 &i2c0 {
@@ -241,6 +252,45 @@
 			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";
+		};
+	};
+};
+
+&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 = <&reg_3p1v>;
+	vqmmc-supply = <&reg_3p1v>;
+};
+
+&mmc2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc2_default>;
+	no-sdio;
+	no-sd;
+	non-removable;
+	bus-width = <8>;
+	vmmc-supply = <&reg_3p1v>;
 };
 
 &timer {
-- 
2.17.1