diff options
| author | Nicolas Ferre <nicolas.ferre@atmel.com> | 2012-02-11 15:41:40 +0100 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2012-03-01 13:29:01 +0100 |
| commit | 21f81872788b8089ec4214afad8fc6a0a23f70c8 (patch) | |
| tree | ab105f921cee41ed161e2a21d5ae0a470543572d /Documentation | |
| parent | 4340cde57d54db2078d0f1ef070664e21d32711d (diff) | |
ARM: at91/gpio: add irqdomain and DT support
Add "legacy" type of irqdomain to preserve old-style numbering
and allow smooth transition for both DT and non-DT cases.
Original idea and code by Jean-Christophe Plagniol-Villard.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio_atmel.txt | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio_atmel.txt b/Documentation/devicetree/bindings/gpio/gpio_atmel.txt new file mode 100644 index 000000000000..a7bcaec913bf --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio_atmel.txt @@ -0,0 +1,20 @@ +* Atmel GPIO controller (PIO) + +Required properties: +- compatible: "atmel,at91rm9200-gpio" +- reg: Should contain GPIO controller registers location and length +- interrupts: Should be the port interrupt shared by all the pins. +- #gpio-cells: Should be two. The first cell is the pin number and + the second cell is used to specify optional parameters (currently + unused). +- gpio-controller: Marks the device node as a GPIO controller. + +Example: + pioA: gpio@fffff200 { + compatible = "atmel,at91rm9200-gpio"; + reg = <0xfffff200 0x100>; + interrupts = <2 4>; + #gpio-cells = <2>; + gpio-controller; + }; + |