From 1b5bda21b05ef1b3c5462d4f066fda7c68240dda Mon Sep 17 00:00:00 2001 From: Feng Kan Date: Thu, 31 Jul 2014 12:03:26 -0700 Subject: [PATCH] Documentation: gpio: Add APM X-Gene SoC GPIO controller DTS binding Documentation for APM X-Gene SoC GPIO controller DTS binding. Signed-off-by: Feng Kan Reviewed-by: Alexandre Courbot Signed-off-by: Linus Walleij --- .../devicetree/bindings/gpio/gpio-xgene.txt | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-xgene.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-xgene.txt b/Documentation/devicetree/bindings/gpio/gpio-xgene.txt new file mode 100644 index 000000000000..86dbb05e7758 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-xgene.txt @@ -0,0 +1,22 @@ +APM X-Gene SoC GPIO controller bindings + +This is a gpio controller that is part of the flash controller. +This gpio controller controls a total of 48 gpios. + +Required properties: +- compatible: "apm,xgene-gpio" for X-Gene GPIO controller +- reg: Physical base address and size of the controller's registers +- #gpio-cells: Should be two. + - first cell is the pin number + - second cell is used to specify the gpio polarity: + 0 = active high + 1 = active low +- gpio-controller: Marks the device node as a GPIO controller. + +Example: + gpio0: gpio0@1701c000 { + compatible = "apm,xgene-gpio"; + reg = <0x0 0x1701c000 0x0 0x40>; + gpio-controller; + #gpio-cells = <2>; + };