[PATCH v3 4/6] dt-bindings: gpio: Add binding documentation for gpio-thunderx
From: David Daney <hidden>
Date: 2017-02-14 17:51:26
Also in:
linux-gpio, lkml
Subsystem:
gpio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Signed-off-by: David Daney <redacted> Acked-by: Rob Herring <robh@kernel.org> --- .../devicetree/bindings/gpio/gpio-thunderx.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt b/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
new file mode 100644
index 0000000..3f883ae
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-thunderx.txt@@ -0,0 +1,27 @@ +Cavium ThunderX/OCTEON-TX GPIO controller bindings + +Required Properties: +- reg: The controller bus address. +- gpio-controller: Marks the device node as a GPIO controller. +- #gpio-cells: Must be 2. + - First cell is the GPIO pin number relative to the controller. + - Second cell is a standard generic flag bitfield as described in gpio.txt. + +Optional Properties: +- compatible: "cavium,thunder-8890-gpio", unused as PCI driver binding is used. +- interrupt-controller: Marks the device node as an interrupt controller. +- #interrupt-cells: Must be present and have value of 2 if + "interrupt-controller" is present. + - First cell is the GPIO pin number relative to the controller. + - Second cell is triggering flags as defined in interrupts.txt. + +Example: + +gpio_6_0: gpio@6,0 { + compatible = "cavium,thunder-8890-gpio"; + reg = <0x3000 0 0 0 0>; /* DEVFN = 0x30 (6:0) */ + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; +};
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1.8.3.1