ARM: dts: imx: add LVDS backlight for Ventana

The GW54xx/GW53xx/GW52xx all support LVDS with a PWM controlled backlight.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

diff --git a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
index 1022197..62f533a 100644 (file)
--- a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
@@ -27,6 +27,13 @@
                bootargs = "console=ttymxc1,115200";
        };
 
+       backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm4 0 5000000>;
+               brightness-levels = <0 4 8 16 32 64 128 255>;
+               default-brightness-level = <7>;
+       };
+
        leds {
                compatible = "gpio-leds";
 
@@ -399,6 +406,12 @@
                        >;
                };
 
+               pinctrl_pwm4: pwm4grp {
+                       fsl,pins = <
+                               MX6QDL_PAD_SD1_CMD__PWM4_OUT            0x1b0b1
+                       >;
+               };
+
                pinctrl_uart1: uart1grp {
                        fsl,pins = <
                                MX6QDL_PAD_SD3_DAT7__UART1_TX_DATA      0x1b0b1
@@ -448,6 +461,12 @@
        status = "okay";
 };
 
+&pwm4 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pwm4>;
+       status = "okay";
+};
+
 &ssi1 {
        fsl,mode = "i2s-slave";
        status = "okay";

diff --git a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
index 523f26f..c91b5a6 100644 (file)
--- a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
@@ -30,6 +30,13 @@
                bootargs = "console=ttymxc1,115200";
        };
 
+       backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm4 0 5000000>;
+               brightness-levels = <0 4 8 16 32 64 128 255>;
+               default-brightness-level = <7>;
+       };
+
        leds {
                compatible = "gpio-leds";
 
@@ -439,6 +446,12 @@
                        >;
                };
 
+               pinctrl_pwm4: pwm4grp {
+                       fsl,pins = <
+                               MX6QDL_PAD_SD1_CMD__PWM4_OUT            0x1b0b1
+                       >;
+               };
+
                pinctrl_uart1: uart1grp {
                        fsl,pins = <
                                MX6QDL_PAD_SD3_DAT7__UART1_TX_DATA      0x1b0b1
@@ -513,6 +526,12 @@
        };
 };
 
+&pwm4 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pwm4>;
+       status = "okay";
+};
+
 &ssi1 {
        fsl,mode = "i2s-slave";
        status = "okay";

diff --git a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
index cab94bf..698d306 100644 (file)
--- a/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw54xx.dtsi
@@ -30,6 +30,13 @@
                bootargs = "console=ttymxc1,115200";
        };
 
+       backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm4 0 5000000>;
+               brightness-levels = <0 4 8 16 32 64 128 255>;
+               default-brightness-level = <7>;
+       };
+
        leds {
                compatible = "gpio-leds";
 
@@ -461,6 +468,12 @@
                        >;
                };
 
+               pinctrl_pwm4: pwm4grp {
+                       fsl,pins = <
+                               MX6QDL_PAD_SD1_CMD__PWM4_OUT            0x1b0b1
+                       >;
+               };
+
                pinctrl_uart1: uart1grp {
                        fsl,pins = <
                                MX6QDL_PAD_SD3_DAT7__UART1_TX_DATA      0x1b0b1
@@ -535,6 +548,12 @@
        };
 };
 
+&pwm4 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pwm4>;
+       status = "okay";
+};
+
 &ssi1 {
        fsl,mode = "i2s-slave";
        status = "okay";