1 Synopsys GPIO via CREG (Control REGisters) dri 1 Synopsys GPIO via CREG (Control REGisters) driver
2 2
3 Required properties: 3 Required properties:
4 - compatible : "snps,creg-gpio-hsdk" or "snps, 4 - compatible : "snps,creg-gpio-hsdk" or "snps,creg-gpio-axs10x".
5 - reg : Exactly one register range with length 5 - reg : Exactly one register range with length 0x4.
6 - #gpio-cells : Since the generic GPIO binding 6 - #gpio-cells : Since the generic GPIO binding is used, the
7 amount of cells must be specified as 2. The 7 amount of cells must be specified as 2. The first cell is the
8 pin number, the second cell is used to speci 8 pin number, the second cell is used to specify optional parameters:
9 See "gpio-specifier" in .../devicetree/bindi 9 See "gpio-specifier" in .../devicetree/bindings/gpio/gpio.txt.
10 - gpio-controller : Marks the device node as a 10 - gpio-controller : Marks the device node as a GPIO controller.
11 - ngpios: Number of GPIO pins. 11 - ngpios: Number of GPIO pins.
12 12
13 Example: 13 Example:
14 14
15 gpio: gpio@f00014b0 { 15 gpio: gpio@f00014b0 {
16 compatible = "snps,creg-gpio-hsdk"; 16 compatible = "snps,creg-gpio-hsdk";
17 reg = <0xf00014b0 0x4>; 17 reg = <0xf00014b0 0x4>;
18 gpio-controller; 18 gpio-controller;
19 #gpio-cells = <2>; 19 #gpio-cells = <2>;
20 ngpios = <2>; 20 ngpios = <2>;
21 }; 21 };
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