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-rw-r--r--kernel/Documentation/devicetree/bindings/gpio/gpio-zynq.txt11
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/Documentation/devicetree/bindings/gpio/gpio-zynq.txt b/kernel/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
index 986371a4b..7b542657f 100644
--- a/kernel/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
+++ b/kernel/Documentation/devicetree/bindings/gpio/gpio-zynq.txt
@@ -6,12 +6,19 @@ Required properties:
- First cell is the GPIO line number
- Second cell is used to specify optional
parameters (unused)
-- compatible : Should be "xlnx,zynq-gpio-1.0"
+- compatible : Should be "xlnx,zynq-gpio-1.0" or "xlnx,zynqmp-gpio-1.0"
- clocks : Clock specifier (see clock bindings for details)
- gpio-controller : Marks the device node as a GPIO controller.
- 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>;
};