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authorJonathan Neuschäfer <j.neuschaefer@gmx.net>2018-01-22 06:04:09 +0100
committerLinus Walleij <linus.walleij@linaro.org>2018-02-12 09:36:06 +0100
commit4760b6fa442276783aa4294e131b72fea8c5a18a (patch)
tree4da2b7b139aca2546ec144ccb7f6a9d7b25efb56 /Documentation/devicetree/bindings
parentb5cd7802dd7c10c5be388c8820d8e753f4f8fce7 (diff)
dt-bindings: gpio: Add binding for Wii GPIO controller
The Nintendo Wii game console has a GPIO controller, which is used for the optical disk slot LED, buttons, poweroff, etc. This patch adds a binding for this GPIO controller. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r--Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt27
-rw-r--r--Documentation/devicetree/bindings/powerpc/nintendo/wii.txt9
2 files changed, 28 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt b/Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt
new file mode 100644
index 000000000000..20fc72d9e61e
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt
@@ -0,0 +1,27 @@
+Nintendo Wii (Hollywood) GPIO controller
+
+Required properties:
+- compatible: "nintendo,hollywood-gpio
+- reg: Physical base address and length of the controller's registers.
+- gpio-controller: Marks the device node as a GPIO controller.
+- #gpio-cells: Should be <2>. The first cell is the pin number and the
+ second cell is used to specify optional parameters:
+ - bit 0 specifies polarity (0 for normal, 1 for inverted).
+
+Optional properties:
+- ngpios: see Documentation/devicetree/bindings/gpio/gpio.txt
+- interrupt-controller: Marks the device node as an interrupt controller.
+- #interrupt-cells: Should be two.
+- interrupts: Interrupt specifier for the controller's Broadway (PowerPC)
+ interrupt.
+- interrupt-parent: phandle of the parent interrupt controller.
+
+Example:
+
+ GPIO: gpio@d8000c0 {
+ #gpio-cells = <2>;
+ compatible = "nintendo,hollywood-gpio";
+ reg = <0x0d8000c0 0x40>;
+ gpio-controller;
+ ngpios = <24>;
+ }
diff --git a/Documentation/devicetree/bindings/powerpc/nintendo/wii.txt b/Documentation/devicetree/bindings/powerpc/nintendo/wii.txt
index 36afa322b04b..a3dc4b9fa11a 100644
--- a/Documentation/devicetree/bindings/powerpc/nintendo/wii.txt
+++ b/Documentation/devicetree/bindings/powerpc/nintendo/wii.txt
@@ -152,14 +152,7 @@ Nintendo Wii device tree
1.l) The General Purpose I/O (GPIO) controller node
- Represents the dual access 32 GPIO controller interface.
-
- Required properties:
-
- - #gpio-cells : <2>
- - compatible : should be "nintendo,hollywood-gpio"
- - reg : should contain the IPC registers location and length
- - gpio-controller
+ see Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt
1.m) The control node