e1822384d6
Add the documentation for the Microsemi Serval pinmuxing and gpio controller. Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Link: https://lore.kernel.org/r/20201106093118.965152-3-gregory.clement@bootlin.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
41 lines
1.2 KiB
Text
41 lines
1.2 KiB
Text
Microsemi Ocelot pin controller Device Tree Bindings
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----------------------------------------------------
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Required properties:
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- compatible : Should be "mscc,ocelot-pinctrl",
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"mscc,jaguar2-pinctrl", "microchip,sparx5-pinctrl",
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"mscc,luton-pinctrl" or "mscc,serval-pinctrl"
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- reg : Address and length of the register set for the device
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- gpio-controller : Indicates this device is a GPIO controller
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- #gpio-cells : Must be 2.
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The first cell is the pin number and the
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second cell specifies GPIO flags, as defined in
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<dt-bindings/gpio/gpio.h>.
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- gpio-ranges : Range of pins managed by the GPIO controller.
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The ocelot-pinctrl driver uses the generic pin multiplexing and generic pin
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configuration documented in pinctrl-bindings.txt.
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The following generic properties are supported:
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- function
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- pins
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Example:
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gpio: pinctrl@71070034 {
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compatible = "mscc,ocelot-pinctrl";
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reg = <0x71070034 0x28>;
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gpio-controller;
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#gpio-cells = <2>;
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gpio-ranges = <&gpio 0 0 22>;
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uart_pins: uart-pins {
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pins = "GPIO_6", "GPIO_7";
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function = "uart";
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};
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uart2_pins: uart2-pins {
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pins = "GPIO_12", "GPIO_13";
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function = "uart2";
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};
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};
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