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Date: Tue, 28 Feb 2017 17:48:50 -0800 From: David Daney <david.daney@...ium.com> To: Linus Walleij <linus.walleij@...aro.org>, Alexandre Courbot <gnurou@...il.com>, Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, Marc Zyngier <marc.zyngier@....com>, Thomas Gleixner <tglx@...utronix.de>, linux-gpio@...r.kernel.org, devicetree@...r.kernel.org Cc: linux-kernel@...r.kernel.org, David Daney <david.daney@...ium.com> Subject: [PATCH v5 4/6] dt-bindings: gpio: Add binding documentation for gpio-thunderx Signed-off-by: David Daney <david.daney@...ium.com> Acked-by: Rob Herring <robh@...nel.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>; +}; -- 1.8.3.1
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