ARM: dts: mxs: add pwm-backlight for imx23-evk and imx28-evk

Add pwm device and pwm-backlight for imx23-evk and imx28-evk.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

4 files changed, 54 insertions, 2 deletions

diff --git a/arch/arm/boot/dts/imx23-evk.dts b/arch/arm/boot/dts/imx23-evk.dts
index 9eca34fc93dc..3974959d16dd 100644
--- a/arch/arm/boot/dts/imx23-evk.dts
+++ b/arch/arm/boot/dts/imx23-evk.dts
@@ -51,6 +51,12 @@
                 };
 
                 apbx@80040000 {
+                        pwm: pwm@80064000 {
+                                pinctrl-names = "default";
+                                pinctrl-0 = <&pwm2_pins_a>;
+                                status = "okay";
+                        };
+
                         auart0: serial@8006c000 {
                                 pinctrl-names = "default";
                                 pinctrl-0 = <&auart0_pins_a>;
@@ -76,4 +82,11 @@
                         gpio = <&gpio1 29 0>;
                 };
         };
+
+        backlight {
+                compatible = "pwm-backlight";
+                pwms = <&pwm 2 5000000>;
+                brightness-levels = <0 4 8 16 32 64 128 255>;
+                default-brightness-level = <6>;
+        };
 };
diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi
index a94ba1d48c0e..22e161753a5b 100644
--- a/arch/arm/boot/dts/imx23.dtsi
+++ b/arch/arm/boot/dts/imx23.dtsi
@@ -181,6 +181,16 @@
                                         >;
                                         fsl,pull-up = <0>;
                                 };
+
+                                pwm2_pins_a: pwm2@0 {
+                                        reg = <0>;
+                                        fsl,pinmux-ids = <
+                                                0x11c0 /* MX23_PAD_PWM2__PWM2 */
+                                        >;
+                                        fsl,drive-strength = <0>;
+                                        fsl,voltage = <1>;
+                                        fsl,pull-up = <0>;
+                                };
                         };
 
                         digctl@8001c000 {
@@ -294,8 +304,11 @@
                                 interrupts = <22>;
                         };
 
-                        pwm@80064000 {
+                        pwm: pwm@80064000 {
+                                compatible = "fsl,imx23-pwm";
                                 reg = <0x80064000 2000>;
+                                #pwm-cells = <2>;
+                                fsl,pwm-number = <5>;
                                 status = "disabled";
                         };
 
diff --git a/arch/arm/boot/dts/imx28-evk.dts b/arch/arm/boot/dts/imx28-evk.dts
index 856b26aa915a..fba72922d3a1 100644
--- a/arch/arm/boot/dts/imx28-evk.dts
+++ b/arch/arm/boot/dts/imx28-evk.dts
@@ -95,6 +95,12 @@
                                 };
                         };
 
+                        pwm: pwm@80064000 {
+                                pinctrl-names = "default";
+                                pinctrl-0 = <&pwm2_pins_a>;
+                                status = "okay";
+                        };
+
                         duart: serial@80074000 {
                                 pinctrl-names = "default";
                                 pinctrl-0 = <&duart_pins_a>;
@@ -179,4 +185,11 @@
                         linux,default-trigger = "heartbeat";
                 };
         };
+
+        backlight {
+                compatible = "pwm-backlight";
+                pwms = <&pwm 2 5000000>;
+                brightness-levels = <0 4 8 16 32 64 128 255>;
+                default-brightness-level = <6>;
+        };
 };
diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
index 669c1d02b0aa..0ad7b5673705 100644
--- a/arch/arm/boot/dts/imx28.dtsi
+++ b/arch/arm/boot/dts/imx28.dtsi
@@ -364,6 +364,16 @@
                                         fsl,voltage = <1>;
                                         fsl,pull-up = <1>;
                                 };
+
+                                pwm2_pins_a: pwm2@0 {
+                                        reg = <0>;
+                                        fsl,pinmux-ids = <
+                                                0x3120 /* MX28_PAD_PWM2__PWM_2 */
+                                        >;
+                                        fsl,drive-strength = <0>;
+                                        fsl,voltage = <1>;
+                                        fsl,pull-up = <0>;
+                                };
                         };
 
                         digctl@8001c000 {
@@ -526,8 +536,11 @@
                                 status = "disabled";
                         };
 
-                        pwm@80064000 {
+                        pwm: pwm@80064000 {
+                                compatible = "fsl,imx28-pwm", "fsl,imx23-pwm";
                                 reg = <0x80064000 2000>;
+                                #pwm-cells = <2>;
+                                fsl,pwm-number = <8>;
                                 status = "disabled";
                         };