This commit adds documentation for the devicetree bindings of the
gpio-ingenic driver, which handles GPIOs of the Ingenic SoCs
currently supported by the Linux kernel.
Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
---
.../devicetree/bindings/gpio/ingenic,gpio.txt | 48 ++++++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/ingenic,gpio.txt
v2: New patch
v3: No changes
v4: Update for the v4 version of the gpio-ingenic driver
diff --git a/Documentation/devicetree/bindings/gpio/ingenic,gpio.txt b/Documentation/devicetree/bindings/gpio/ingenic,gpio.txt
new file mode 100644
index 000000000000..f54af444f7c3
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/ingenic,gpio.txt
@@ -0,0 +1,48 @@
+Ingenic jz47xx GPIO controller
+
+That the Ingenic GPIO driver node must be a sub-node of the Ingenic pinctrl
+driver node.
+
+Required properties:
+--------------------
+
+ - compatible: Must contain one of:
+ - "ingenic,jz4740-gpio"
+ - "ingenic,jz4770-gpio"
+ - "ingenic,jz4780-gpio"
+ And one of:
+ - "ingenic,gpio-bank-a"
+ - "ingenic,gpio-bank-b"
+ - "ingenic,gpio-bank-c"
+ - "ingenic,gpio-bank-d"
+ - "ingenic,gpio-bank-e" (for SoC version > jz4740)
+ - "ingenic,gpio-bank-f" (for SoC version > jz4740)
+ - interrupt-controller: Marks the device node as an interrupt controller.
+ - interrupts: Interrupt specifier for the controllers interrupt.
+ - #interrupt-cells: Should be 2. Refer to
+ ../interrupt-controller/interrupts.txt for more details.
+ - 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 specifies GPIO flags, as defined in <dt-bindings/gpio/gpio.h>. Only the
+ GPIO_ACTIVE_HIGH and GPIO_ACTIVE_LOW flags are supported.
+ - gpio-ranges: Range of pins managed by the GPIO controller. Refer to
+ 'gpio.txt' in this directory for more details.
+
+Example:
+--------
+
+&pinctrl {
+ gpa: gpio-controller@0 {
+ compatible = "ingenic,gpio-bank-a", "ingenic,jz4740-gpio";
+
+ gpio-controller;
+ gpio-ranges = <&pinctrl 0 0 32>;
+ #gpio-cells = <2>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ interrupt-parent = <&intc>;
+ interrupts = <28>;
+ };
+};
--
2.11.0
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