diff options
| author | Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> | 2018-09-28 16:15:31 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-10-10 10:19:14 +0300 |
| commit | 29f55cc664f48cfeee661b2dbea39cd72a311e7e (patch) | |
| tree | 6074e0408fd7db7bd235e10aeddfc0bfc5bc8667 /Documentation/devicetree | |
| parent | 3ea47b447da0b8e93735612f2b0d128dba4d7524 (diff) | |
| download | linux-29f55cc664f48cfeee661b2dbea39cd72a311e7e.tar.xz | |
dt-bindings: Document the Synopsys GPIO via CREG bindings
This patch adds documentation of device tree bindings for the Synopsys
GPIO via CREG driver.
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/snps,creg-gpio.txt | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/snps,creg-gpio.txt b/Documentation/devicetree/bindings/gpio/snps,creg-gpio.txt new file mode 100644 index 000000000000..1b30812b015b --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/snps,creg-gpio.txt @@ -0,0 +1,21 @@ +Synopsys GPIO via CREG (Control REGisters) driver + +Required properties: +- compatible : "snps,creg-gpio-hsdk" or "snps,creg-gpio-axs10x". +- reg : Exactly one register range with length 0x4. +- #gpio-cells : Since the generic GPIO binding is used, the + amount of cells must be specified as 2. The first cell is the + pin number, the second cell is used to specify optional parameters: + See "gpio-specifier" in .../devicetree/bindings/gpio/gpio.txt. +- gpio-controller : Marks the device node as a GPIO controller. +- ngpios: Number of GPIO pins. + +Example: + +gpio: gpio@f00014b0 { + compatible = "snps,creg-gpio-hsdk"; + reg = <0xf00014b0 0x4>; + gpio-controller; + #gpio-cells = <2>; + ngpios = <2>; +}; |