summaryrefslogtreecommitdiffstats
path: root/Documentation
diff options
context:
space:
mode:
authorSoren Brinkmann <soren.brinkmann@xilinx.com>2015-10-23 09:25:30 -0700
committerLinus Walleij <linus.walleij@linaro.org>2015-10-27 17:01:28 +0100
commit787dfbb294b25b37211d0749e7cdbb20d443c680 (patch)
treee20df396576466d2594c04ee871f9585c8adaf5f /Documentation
parent79786721c29ff8fecf2903ba080479476015553d (diff)
downloadlinux-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.txt9
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>;
};