Commit 29f55cc6 authored by Eugeniy Paltsev's avatar Eugeniy Paltsev Committed by Linus Walleij

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's avatarRob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij's avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarEugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Linus Walleij's avatarLinus Walleij <linus.walleij@linaro.org>
parent 3ea47b44
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>;
};
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