From b55ac4ea96adc907bec7b0a804c1edd3dbf2e64d Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 4 Apr 2012 17:06:41 +0100 Subject: [PATCH] drivers/gpio: gpio-nomadik: Provide documentation for Device Tree bindings Add required documentation for specific gpio-nomadik DT bindings. Acked-by: Arnd Bergmann Signed-off-by: Lee Jones Signed-off-by: Linus Walleij --- .../devicetree/bindings/gpio/gpio-nmk.txt | 29 +++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-nmk.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-nmk.txt b/Documentation/devicetree/bindings/gpio/gpio-nmk.txt new file mode 100644 index 000000000000..3856789b52ea --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-nmk.txt @@ -0,0 +1,29 @@ +Nomadik GPIO controller + +Required properties: +- compatible : Should be "st,nomadik-gpio". +- reg : Physical base address and length of the controller's registers. +- interrupts : The interrupt outputs from the controller. +- #gpio-cells : Should be two: + The first cell is the pin number. + The second cell is used to specify optional parameters: + - bits[3:0] trigger type and level flags: + 1 = low-to-high edge triggered. + 2 = high-to-low edge triggered. + 4 = active high level-sensitive. + 8 = active low level-sensitive. +- gpio-controller : Marks the device node as a GPIO controller. +- gpio-bank : Specifies which bank a controller owns. +- st,supports-sleepmode : Specifies whether controller can sleep or not + +Example: + + gpio1: gpio@8012e080 { + compatible = "st,nomadik-gpio"; + reg = <0x8012e080 0x80>; + interrupts = <0 120 0x4>; + #gpio-cells = <2>; + gpio-controller; + supports-sleepmode; + gpio-bank = <1>; + }; -- 2.20.1