linux-kernel - [PATCH] ARM64: dts: marvell: armada-37xx: Enable uSD on ESPRESSObin

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Date:   Fri, 21 Jul 2017 01:50:36 +0200
From:   Marcin Wojtas <mw@...ihalf.com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     andrew@...n.ch, thomas.petazzoni@...e-electrons.com,
        gregory.clement@...e-electrons.com, mark.rutland@....com,
        marc.zyngier@....com, nadavh@...vell.com, neta@...vell.com,
        mw@...ihalf.com, jaz@...ihalf.com, hannah@...vell.com,
        zbodek@...il.com
Subject: [PATCH] ARM64: dts: marvell: armada-37xx: Enable uSD on ESPRESSObin

The ESPRESSObin board exposes one of the SDHCI interfaces
via J1 uSD slot. This patch enables it.

Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
Signed-off-by: Zbigniew Bodek <zbodek@...il.com>
---
 .../boot/dts/marvell/armada-3720-espressobin.dts   | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts
index b1af3f98..6d0caf1 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts
@@ -45,6 +45,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/gpio/gpio.h>
 #include "armada-372x.dtsi"
 
 / {
@@ -59,6 +60,20 @@
 		device_type = "memory";
 		reg = <0x00000000 0x00000000 0x00000000 0x20000000>;
 	};
+
+	vcc_sd_reg1: regulator {
+		compatible = "regulator-gpio";
+		regulator-name = "vcc_sd1";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+
+		gpios = <&gpionb 4 GPIO_ACTIVE_HIGH>;
+		gpios-states = <0>;
+		states = <1800000 0x1
+			  3300000 0x0>;
+		enable-active-high;
+	};
 };
 
 /* J9 */
@@ -71,6 +86,17 @@
 	status = "okay";
 };
 
+/* J1 */
+&sdhci1 {
+	wp-inverted;
+	bus-width = <4>;
+	cd-gpios = <&gpionb 3 GPIO_ACTIVE_LOW>;
+	no-1-8-v;
+	marvell,pad-type = "sd";
+	vqmmc-supply = <&vcc_sd_reg1>;
+	status = "okay";
+};
+
 /* Exported on the micro USB connector J5 through an FTDI */
 &uart0 {
 	status = "okay";
-- 
1.8.3.1