Add gpio nodes for Actions Semi S900 SoC.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
.../devicetree/bindings/gpio/actions,owl-gpio.txt | 87 ++++++++++++++++++++++
1 file changed, 87 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt
diff --git a/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt b/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt
new file mode 100644
index 000000000000..34283e9195ea
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt
@@ -0,0 +1,87 @@
+* Actions Semi OWL GPIO controller bindings
+
+The GPIOs are organized as individual banks/ports with variable number
+of GPIOs. Each bank is represented as an individual GPIO controller.
+
+Required properties:
+- compatible : Should be "actions,s900-gpio"
+- reg : Address and range of the GPIO controller registers.
+- gpio-controller : Marks the device node as a GPIO controller.
+- #gpio-cells : Should be <2>. The first cell is the gpio number
+ and the second cell is used to specify optional
+ parameters.
+- ngpios : Specifies the number of GPIO lines.
+- interrupt-controller : Marks the device node as an interrupt controller.
+- #interrupt-cells : Specifies the number of cells needed to encode an
+ interrupt. Shall be set to 2. The first cell
+ defines the interrupt number, the second encodes
+ the trigger flags described in
+ bindings/interrupt-controller/interrupts.txt
+
+Optional properties:
+- gpio-ranges : Mapping between GPIO and pinctrl
+
+Examples:
+
+ gpioa: gpio@e01b0000 {
+ compatible = "actions,s900-gpio";
+ reg = <0x0 0xe01b0000 0x0 0x000c>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pinctrl 0 0 32>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpiob: gpio@e01b000c {
+ compatible = "actions,s900-gpio";
+ reg = <0x0 0xe01b000c 0x0 0x000c>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pinctrl 0 32 32>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpioc: gpio@e01b0018 {
+ compatible = "actions,s900-gpio";
+ reg = <0x0 0xe01b0018 0x0 0x000c>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pinctrl 0 64 12>;
+ ngpios = <12>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpiod: gpio@e01b0024 {
+ compatible = "actions,s900-gpio";
+ reg = <0x0 0xe01b0024 0x0 0x000c>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pinctrl 0 76 30>;
+ ngpios = <30>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpioe: gpio@e01b0030 {
+ compatible = "actions,s900-gpio";
+ reg = <0x0 0xe01b0030 0x0 0x000c>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pinctrl 0 106 32>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ gpiof: gpio@e01b00f0 {
+ compatible = "actions,s900-gpio";
+ reg = <0x0 0xe01b00f0 0x0 0x000c>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pinctrl 0 138 8>;
+ ngpios = <8>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
--
2.14.1
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