linux-kernel - [PATCH 3/4] ARM: at91/dt: sama5d3 xplained: add fixed regulator for vmmc0

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Message-ID: <1430140753-19998-3-git-send-email-ludovic.desroches@atmel.com>
Date:	Mon, 27 Apr 2015 15:19:12 +0200
From:	Ludovic Desroches <ludovic.desroches@...el.com>
To:	<nicolas.ferre@...el.com>, <linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>
CC:	<linux-kernel@...r.kernel.org>, <plagnioj@...osoft.com>,
	<ben.dooks@...ethink.co.uk>,
	Ludovic Desroches <ludovic.desroches@...el.com>
Subject: [PATCH 3/4] ARM: at91/dt: sama5d3 xplained: add fixed regulator for vmmc0

From: Ben Dooks <ben.dooks@...ethink.co.uk>

Add fixed regulator for vmmc0 and attach the vmmc for it to the mmc0
node on the SAM5D3 Xplained board. This will remove the following
warning from the kernel:

atmel_mci f0000000.mmc: No vmmc regulator found

Note, atmel_defconfig will need fixed regulator support enabled if this
is to be used properly.

Signed-off-by: Ben Dooks <ben.dooks@...ethink.co.uk>
[use a fixed regulator instead of gpio one]
Signed-off-by: Ludovic Desroches <ludovic.desroches@...el.com>
---
 arch/arm/boot/dts/at91-sama5d3_xplained.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/at91-sama5d3_xplained.dts b/arch/arm/boot/dts/at91-sama5d3_xplained.dts
index 61922b3..581986a 100644
--- a/arch/arm/boot/dts/at91-sama5d3_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d3_xplained.dts
@@ -35,6 +35,7 @@
 		apb {
 			mmc0: mmc@...00000 {
 				pinctrl-0 = <&pinctrl_mmc0_clk_cmd_dat0 &pinctrl_mmc0_dat1_3 &pinctrl_mmc0_dat4_7 &pinctrl_mmc0_cd>;
+				vmmc-supply = <&vcc_mmc0_reg>;
 				vqmmc-supply = <&vcc_3v3_reg>;
 				status = "okay";
 				slot@0 {
@@ -296,6 +297,14 @@
 		};
 	};
 
+	vcc_mmc0_reg: fixedregulator@0 {
+		compatible = "regulator-fixed";
+		gpio = <&pioE 2 GPIO_ACTIVE_LOW>;
+		regulator-name = "mmc0-card-supply";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
 	gpio_keys {
 		compatible = "gpio-keys";
 
-- 
2.2.0

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