ARM: mxs: add gpio support for device tree boot

It adds gpio support for device tree boot.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 34 insertions, 1 deletions

diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi
index a85ef5514747..26220550f2f8 100644
--- a/arch/arm/boot/dts/imx23.dtsi
+++ b/arch/arm/boot/dts/imx23.dtsi
@@ -14,6 +14,12 @@
 / {
         interrupt-parent = <&icoll>;
 
+        aliases {
+                gpio0 = &gpio0;
+                gpio1 = &gpio1;
+                gpio2 = &gpio2;
+        };
+
         cpus {
                 cpu@0 {
                         compatible = "arm,arm926ejs";
@@ -74,9 +80,36 @@
                         pinctrl@80018000 {
                                 #address-cells = <1>;
                                 #size-cells = <0>;
-                                compatible = "fsl,imx23-pinctrl";
+                                compatible = "fsl,imx23-pinctrl", "simple-bus";
                                 reg = <0x80018000 2000>;
 
+                                gpio0: gpio@0 {
+                                        compatible = "fsl,imx23-gpio", "fsl,mxs-gpio";
+                                        interrupts = <16>;
+                                        gpio-controller;
+                                        #gpio-cells = <2>;
+                                        interrupt-controller;
+                                        #interrupt-cells = <2>;
+                                };
+
+                                gpio1: gpio@1 {
+                                        compatible = "fsl,imx23-gpio", "fsl,mxs-gpio";
+                                        interrupts = <17>;
+                                        gpio-controller;
+                                        #gpio-cells = <2>;
+                                        interrupt-controller;
+                                        #interrupt-cells = <2>;
+                                };
+
+                                gpio2: gpio@2 {
+                                        compatible = "fsl,imx23-gpio", "fsl,mxs-gpio";
+                                        interrupts = <18>;
+                                        gpio-controller;
+                                        #gpio-cells = <2>;
+                                        interrupt-controller;
+                                        #interrupt-cells = <2>;
+                                };
+
                                 duart_pins_a: duart@0 {
                                         reg = <0>;
                                         fsl,pinmux-ids = <0x11a2 0x11b2>;