diff options
| author | Soren Brinkmann <soren.brinkmann@xilinx.com> | 2015-10-23 09:25:30 -0700 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-10-27 17:01:28 +0100 |
| commit | 787dfbb294b25b37211d0749e7cdbb20d443c680 (patch) | |
| tree | e20df396576466d2594c04ee871f9585c8adaf5f /Documentation | |
| parent | 79786721c29ff8fecf2903ba080479476015553d (diff) | |
| download | linux-787dfbb294b25b37211d0749e7cdbb20d443c680.tar.bz2 | |
gpio: zynq: Document interrupt-controller DT binding
HW and driver support the GPIO as interrupt-controller.
Document that in the DT binding.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-zynq.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt index db4c6a663c03..7b542657f259 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt @@ -12,6 +12,13 @@ Required properties: - interrupts : Interrupt specifier (see interrupt bindings for details) - interrupt-parent : Must be core interrupt controller +- interrupt-controller : Marks the device node as an interrupt controller. +- #interrupt-cells : Should be 2. The first cell is the GPIO number. + The second cell bits[3:0] is used to specify trigger type and level flags: + 1 = low-to-high edge triggered. + 2 = high-to-low edge triggered. + 4 = active high level-sensitive. + 8 = active low level-sensitive. - reg : Address and length of the register set for the device Example: @@ -22,5 +29,7 @@ Example: gpio-controller; interrupt-parent = <&intc>; interrupts = <0 20 4>; + interrupt-controller; + #interrupt-cells = <2>; reg = <0xe000a000 0x1000>; }; |