Signed-off-by: Andrew Jeffery <andrew@xxxxxxxx>
---
Since v1:
Rob: I haven't added your Acked-by here as I've made the following changes and
wanted to get your input:
* Remove interrupt-controller as an optional property
* Defer to interrupt-controller bindings document for sub-node properties
I had a discussion with Joel about whether the interrupt-controller capability
should be optional and the conclusion was that it should always be configured
by the driver. This makes an optional interrupt-controller property feel
redundant (and possibly inaccurate if left out) so I've removed it.
.../devicetree/bindings/gpio/gpio-aspeed.txt | 34 ++++++++++++++++++++++
1 file changed, 34 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt b/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
new file mode 100644
index 000000000000..a5ad1eb93ce0
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
@@ -0,0 +1,34 @@
+Aspeed GPIO controller Device Tree Bindings
+-------------------------------------------
+
+Required properties:
+- #gpio-cells : Should be two
+ - First cell is the GPIO line number
+ - Second cell is used to specify optional
+ parameters (unused)
+
+- compatible : Either "aspeed,ast2400-gpio" or "aspeed,ast2500-gpio"
+
+- reg : Address and length of the register set for the device
+- gpio-controller : Marks the device node as a GPIO controller.
+- interrupts : Interrupt specifier (see interrupt bindings for
+ details)
+
+Optional properties:
+
+- interrupt-parent : The parent interrupt controller, optional if inherited
+
+The gpio and interrupt properties are further described in their respective
+bindings documentation:
+
+- Documentation/devicetree/bindings/gpio/gpio.txt
+- Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+
+ Example:
+ gpio@1e780000 {
+ #gpio-cells = <2>;
+ compatible = "aspeed,ast2400-gpio"
+ gpio-controller;
+ interrupts = <20>;
+ reg = <0x1e780000 0x1000>;
+ };
--
2.9.3
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