diff options
Diffstat (limited to 'Documentation/devicetree/bindings/gpio')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-pl061.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-pl061.txt b/Documentation/devicetree/bindings/gpio/gpio-pl061.txt new file mode 100644 index 00000000000..687206727bd --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-pl061.txt @@ -0,0 +1,33 @@ +PL061 GPIO controller bindings + +Required properties: +- compatible: + - "arm,pl061", "arm,primecell". +- #gpio-cells : Should be two. + - first cell is the gpio 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. +- interrupt-controller : Marks the device node as an interrupt controller. +- #interrupt-cells : Should be two. + - first cell is the hw irq number + - second cell is used to specify the interrupt type: + 0 = default, unspecified type + 1 = rising edge triggered + 2 = falling edge triggered + 4 = high level triggered + 8 = low level triggered +- linux,gpio-base : Should be the global GPIO number. + +Example: + gpio0: gpio@fc806000 { + compatible = "arm,pl061", "arm,primecell"; + reg = <0xfc806000 0x1000>; + interrupts = <0 64 0x4>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + linux,gpio-base = <0>; + }; |