linux-kernel - [PATCH] ARM: cfa10036: add one wire bitbanging to the cfa10049

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Date:	Fri, 29 Mar 2013 19:46:41 +0100
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Shawn Guo <shawn.guo@...aro.org>
Cc:	jimwall@...om, brian@...stalfontz.com,
	Maxime Rpard <maxime.ripard@...e-electrons.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: cfa10036: add one wire bitbanging to the cfa10049

Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
---
 arch/arm/boot/dts/imx28-cfa10049.dts |   20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx28-cfa10049.dts b/arch/arm/boot/dts/imx28-cfa10049.dts
index ded7784..b9dad4e 100644
--- a/arch/arm/boot/dts/imx28-cfa10049.dts
+++ b/arch/arm/boot/dts/imx28-cfa10049.dts
@@ -30,7 +30,6 @@
 					reg = <0>;
 					fsl,pinmux-ids = <
 						0x0073 /* MX28_PAD_GPMI_D7__GPIO_0_7 */
-						0x1153 /* MX28_PAD_LCD_D22__GPIO_1_21 */
 						0x1163 /* MX28_PAD_LCD_D22__GPIO_1_22 */
 						0x1173 /* MX28_PAD_LCD_D22__GPIO_1_23 */
 						0x2153 /* MX28_PAD_SSP2_D5__GPIO_2_21 */
@@ -120,6 +119,16 @@
 					fsl,voltage = <1>;
 					fsl,pull-up = <0>;
 				};
+
+				w1_gpio_pins: w1-gpio@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						0x1153 /* MX28_PAD_LCD_D21__GPIO_1_21 */
+					>;
+					fsl,drive-strength = <1>;
+					fsl,voltage = <1>;
+					fsl,pull-up = <0>; /* 0 will enable the keeper */
+				};
 			};
 
 			lcdif@...30000 {
@@ -304,5 +313,14 @@
 		pwms = <&pwm 3 5000000>;
 		brightness-levels = <0 4 8 16 32 64 128 255>;
 		default-brightness-level = <6>;
+
+	};
+
+	onewire@0 {
+		compatible = "w1-gpio";
+		pinctrl-names = "default";
+		pinctrl-0 = <&w1_gpio_pins>;
+		status = "okay";
+		gpios = <&gpio1 21 0>;
 	};
 };
-- 
1.7.10.4

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