[PATCH 3/6] gpio: gpio-cbc: Document bindings of CBC FPGA GPIO block
From: Pantelis Antoniou <hidden>
Date: 2016-10-07 15:35:43
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
From: Georgi Vlaev <redacted> Add device tree bindings document for the GPIO driver of Juniper's CBC FPGA. Signed-off-by: Georgi Vlaev <redacted> [Ported from Juniper kernel] Signed-off-by: Pantelis Antoniou <redacted> --- .../devicetree/bindings/gpio/jnx,gpio-cbc.txt | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/jnx,gpio-cbc.txt
diff --git a/Documentation/devicetree/bindings/gpio/jnx,gpio-cbc.txt b/Documentation/devicetree/bindings/gpio/jnx,gpio-cbc.txt
new file mode 100644
index 0000000..d205d0b
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/jnx,gpio-cbc.txt@@ -0,0 +1,30 @@ +Juniper CBC FPGA GPIO block + +Required properties: + +- compatible: + Must be "jnx,cbc-gpio" + +Optional properties: + +- reg: + Address and length of the register set for the device. This is optional since + usually the parent MFD driver fills it in. + +- #gpio-cells: + Should be <2>. The first cell is the pin number (within the controller's + pin space), and the second is used for the following flags: + bit[0]: direction (0 = out, 1 = in) + bit[1]: init high + bit[2]: active low + +- gpio-controller: + Specifies that the node is a GPIO controller. + +Example: + +gpio_cbc { + compatible = "jnx,gpio-cbc"; + #gpio-cells = <2>; + gpio-controller; +};
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1.9.1