linux-kernel - [PATCH 2/2] ARM: dts: vf-colibri: add supply regulators

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Date:	Mon, 15 Feb 2016 18:14:14 -0800
From:	Stefan Agner <stefan@...er.ch>
To:	shawnguo@...nel.org, kernel@...gutronix.de
Cc:	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Stefan Agner <stefan@...er.ch>
Subject: [PATCH 2/2] ARM: dts: vf-colibri: add supply regulators

Colibri modules need to be powered using the power pins 3V3 and
AVDD. Add fixed regulators which represent this power rails.
Potentially, those power rails could be switched on a carrier
board. A carrier board device tree could add a own regulator with
a GPIO, and reference that regulator in a vin-supply property of
those new module level system regulators.

Signed-off-by: Stefan Agner <stefan@...er.ch>
---
 arch/arm/boot/dts/vf-colibri.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/vf-colibri.dtsi b/arch/arm/boot/dts/vf-colibri.dtsi
index ff6f58e..191506a 100644
--- a/arch/arm/boot/dts/vf-colibri.dtsi
+++ b/arch/arm/boot/dts/vf-colibri.dtsi
@@ -48,14 +48,31 @@
 		enable-gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>;
 		status = "disabled";
 	};
+
+	reg_sys_3v3: regulator-sys-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	reg_sys_3v3_avdd: regulator-sys-3v3-avdd {
+		compatible = "regulator-fixed";
+		regulator-name = "AVDD";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
 };
 
 &adc0 {
 	status = "okay";
+	vref-supply = <&reg_sys_3v3_avdd>;
 };
 
 &adc1 {
 	status = "okay";
+	vref-supply = <&reg_sys_3v3_avdd>;
 };
 
 &can0 {
@@ -96,6 +113,7 @@
 
 &fec1 {
 	phy-mode = "rmii";
+	phy-supply = <&reg_sys_3v3>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_fec1>;
 };
-- 
2.7.1