diff options
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt index 4363ae4b3c14..dbd22e0df21e 100644 --- a/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt +++ b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt @@ -8,15 +8,25 @@ Required properties: by low 16 pins and the second one is for high 16 pins. - 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 (currently - unused). + the second cell is used to specify the gpio polarity: + 0 = active high + 1 = active low +- 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. Example: gpio0: gpio@73f84000 { - compatible = "fsl,imx51-gpio", "fsl,imx31-gpio"; + compatible = "fsl,imx51-gpio", "fsl,imx35-gpio"; reg = <0x73f84000 0x4000>; interrupts = <50 51>; gpio-controller; #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; }; |