LF-723 ARM: dts: imx: Add pwm backlight for lvds display

Add PWM backlight for LVDS display on i.MX6SX SDB board.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Anson Huang <Anson.Huang@nxp.com>

diff --git a/arch/arm/boot/dts/imx6sx-sdb.dtsi b/arch/arm/boot/dts/imx6sx-sdb.dtsi
index f14d71f..ef3b218 100644 (file)
--- a/arch/arm/boot/dts/imx6sx-sdb.dtsi
+++ b/arch/arm/boot/dts/imx6sx-sdb.dtsi
@@ -28,6 +28,14 @@
                default-brightness-level = <6>;
        };
 
+       backlight2 {
+               compatible = "pwm-backlight";
+               pwms = <&pwm4 0 5000000>;
+               brightness-levels = <0 4 8 16 32 64 128 255>;
+               default-brightness-level = <6>;
+               fb-names = "mxs-lcdif1";
+       };
+
        gpio-keys {
                compatible = "gpio-keys";
                pinctrl-names = "default";
@@ -495,6 +503,12 @@
        status = "okay";
 };
 
+&pwm4 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pwm4>;
+       status = "okay";
+};
+
 &pxp {
        status = "okay";
 };
@@ -825,6 +839,12 @@
                        >;
                };
 
+               pinctrl_pwm4: pwm4grp-1 {
+                       fsl,pins = <
+                               MX6SX_PAD_SD1_DATA1__PWM4_OUT 0x110b0
+                       >;
+               };
+
                pinctrl_qspi2: qspi2grp {
                        fsl,pins = <
                                MX6SX_PAD_NAND_WP_B__QSPI2_A_DATA_0     0x70f1