| Cirrus Logic CLPS711X GPIO controller |
| |
| Required properties: |
| - compatible: Should be "cirrus,ep7209-gpio" |
| - reg: Physical base GPIO controller registers location and length. |
| There should be two registers, first is DATA register, the second |
| is DIRECTION. |
| - 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 the gpio polarity: |
| 0 = active high |
| 1 = active low |
| |
| Note: Each GPIO port should have an alias correctly numbered in "aliases" |
| node. |
| |
| Example: |
| |
| aliases { |
| gpio0 = &porta; |
| }; |
| |
| porta: gpio@80000000 { |
| compatible = "cirrus,ep7312-gpio","cirrus,ep7209-gpio"; |
| reg = <0x80000000 0x1>, <0x80000040 0x1>; |
| gpio-controller; |
| #gpio-cells = <2>; |
| }; |
