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>
diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
index a17fbfc..1abd9b3 100644
--- a/arch/arm/boot/dts/imx28.dtsi
+++ b/arch/arm/boot/dts/imx28.dtsi
@@ -14,6 +14,14 @@
/ {
interrupt-parent = <&icoll>;
+ aliases {
+ gpio0 = &gpio0;
+ gpio1 = &gpio1;
+ gpio2 = &gpio2;
+ gpio3 = &gpio3;
+ gpio4 = &gpio4;
+ };
+
cpus {
cpu@0 {
compatible = "arm,arm926ejs";
@@ -97,9 +105,54 @@
pinctrl@80018000 {
#address-cells = <1>;
#size-cells = <0>;
- compatible = "fsl,imx28-pinctrl";
+ compatible = "fsl,imx28-pinctrl", "simple-bus";
reg = <0x80018000 2000>;
+ gpio0: gpio@0 {
+ compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+ interrupts = <127>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpio1: gpio@1 {
+ compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+ interrupts = <126>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpio2: gpio@2 {
+ compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+ interrupts = <125>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpio3: gpio@3 {
+ compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+ interrupts = <124>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpio4: gpio@4 {
+ compatible = "fsl,imx28-gpio", "fsl,mxs-gpio";
+ interrupts = <123>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
duart_pins_a: duart@0 {
reg = <0>;
fsl,pinmux-ids = <0x3102 0x3112>;