diff options
author | Alban Bedel <albeu@free.fr> | 2015-05-31 00:18:23 (GMT) |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2015-06-21 19:54:08 (GMT) |
commit | d6743a496cfdd84375c7798cfc3dd0e1aeb4ca6d (patch) | |
tree | c3ae396f56647b6ed2fac70db8f5a94bed790f42 /Documentation/devicetree/bindings/gpio | |
parent | 6451af0220a538334155261b562776f266fe5f8f (diff) | |
download | linux-d6743a496cfdd84375c7798cfc3dd0e1aeb4ca6d.tar.xz |
DEVICETREE: Add bindings for the ATH79 GPIO controllers
These bindings support the GPIO controllers found on the Qualcomm
Atheros AR7xxx/AR9XXX SoC.
Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: linux-mips@linux-mips.org
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'Documentation/devicetree/bindings/gpio')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-ath79.txt | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-ath79.txt b/Documentation/devicetree/bindings/gpio/gpio-ath79.txt new file mode 100644 index 0000000..c522851 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-ath79.txt @@ -0,0 +1,38 @@ +Binding for Qualcomm Atheros AR7xxx/AR9xxx GPIO controller + +Required properties: +- compatible: has to be "qca,<soctype>-gpio" and one of the following + fallbacks: + - "qca,ar7100-gpio" + - "qca,ar9340-gpio" +- reg: Base address and size of the controllers memory area +- gpio-controller : Marks the device node as a GPIO controller. +- #gpio-cells : Should be two. The first cell is the pin number and the + second cell is used to specify optional parameters. +- ngpios: Should be set to the number of GPIOs available on the SoC. + +Optional properties: +- interrupt-parent: phandle of the parent interrupt controller. +- interrupts: Interrupt specifier for the controllers interrupt. +- interrupt-controller : Identifies the node as an interrupt controller +- #interrupt-cells : Specifies the number of cells needed to encode interrupt + source, should be 2 + +Please refer to interrupts.txt in this directory for details of the common +Interrupt Controllers bindings used by client devices. + +Example: + + gpio@18040000 { + compatible = "qca,ar9132-gpio", "qca,ar7100-gpio"; + reg = <0x18040000 0x30>; + interrupts = <2>; + + ngpios = <22>; + + gpio-controller; + #gpio-cells = <2>; + + interrupt-controller; + #interrupt-cells = <2>; + }; |