linux-kernel - [PATCH v3 1/4] arm: dts: imx6qdl-icore: Add backlight support for lvds

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Message-Id: <1487653593-3457-1-git-send-email-jagan@openedev.com>
Date:   Tue, 21 Feb 2017 10:36:30 +0530
From:   Jagan Teki <jagan@...nedev.com>
To:     Shawn Guo <shawnguo@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Matteo Lisi <matteo.lisi@...icam.com>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        Jagan Teki <jagan@...rulasolutions.com>,
        Domenico Acri <domenico.acri@...icam.com>
Subject: [PATCH v3 1/4] arm: dts: imx6qdl-icore: Add backlight support for lvds

From: Jagan Teki <jagan@...rulasolutions.com>

This patch add support for lvds backlight on i.CoreM6 QDL
variant boards.

Cc: Domenico Acri <domenico.acri@...icam.com>
Cc: Matteo Lisi <matteo.lisi@...icam.com>
Cc: Michael Trimarchi <michael@...rulasolutions.com>
Cc: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
---
Changes for v3:
- none
Changes for v2:
- none

 arch/arm/boot/dts/imx6qdl-icore.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-icore.dtsi b/arch/arm/boot/dts/imx6qdl-icore.dtsi
index 55bebfc..7dda608 100644
--- a/arch/arm/boot/dts/imx6qdl-icore.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-icore.dtsi
@@ -48,6 +48,14 @@
 		reg = <0x10000000 0x80000000>;
 	};
 
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm3 0 100000>;
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <7>;
+		status = "okay";
+	};
+
 	reg_3p3v: regulator-3p3v {
 		compatible = "regulator-fixed";
 		regulator-name = "3P3V";
@@ -136,6 +144,12 @@
 	status = "okay";
 };
 
+&pwm3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm3>;
+	status = "okay";
+};
+
 &uart4 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart4>;
@@ -246,6 +260,12 @@
 		>;
 	};
 
+	pinctrl_pwm3: pwm3grp-1 {
+		fsl,pins = <
+			MX6QDL_PAD_SD4_DAT1__PWM3_OUT 0x1b0b1
+		>;
+	};
+
 	pinctrl_usbotg: usbotggrp {
 		fsl,pins = <
 			MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x17059
-- 
1.9.1