[PATCH v3 2/3] Documentation: gpio: Add APM X-Gene standby GPIO controller DTS binding
From: Y Vo <hidden>
Date: 2015-01-16 07:34:20
Also in:
linux-arm-kernel, linux-gpio
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
Documentation for APM X-Gene standby GPIO controller DTS binding. Signed-off-by: Y Vo <redacted> --- .../devicetree/bindings/gpio/gpio-xgene-sb.txt | 31 ++++++++++++++++++++ 1 files changed, 31 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-xgene-sb.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-xgene-sb.txt b/Documentation/devicetree/bindings/gpio/gpio-xgene-sb.txt
new file mode 100644
index 0000000..3215e4d
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-xgene-sb.txt@@ -0,0 +1,31 @@ +APM X-Gene Standby GPIO controller bindings + +This is a gpio controller in standby domain. + +There are 20 GPIO pins from 0..21. There is no GPIO_DS14 and GPIO_DS15. +Only GPIO_DS8..GPIO_DS13 support interrupt. IRQ mapping 0x28..0x2d. + +Required properties: +- compatible: "apm,xgene-gpio-sb" for X-Gene Standby 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. +- interrupts: Shall contains the interrupts. + +Example: + sbgpio: sbgpio@17001000 { + compatible = "apm,xgene-gpio-sb"; + reg = <0x0 0x17001000 0x0 0x400>; + #gpio-cells = <2>; + gpio-controller; + interrupts = <0x0 0x28 0x1>, + <0x0 0x29 0x1>, + <0x0 0x2a 0x1>, + <0x0 0x2b 0x1>, + <0x0 0x2c 0x1>, + <0x0 0x2d 0x1>; + };
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1.7.1