linux-kernel - Re: [PATCH 3/4] pinctrl: ralink: add binding documentation

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Message-ID: <CACRpkdbq3u-PoPiN5patknfv5o1-XrVYkGbwTGRCsYpXuuOiGA@mail.gmail.com>
Date:	Mon, 27 Oct 2014 17:22:18 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	John Crispin <blogic@...nwrt.org>
Cc:	Ralf Baechle <ralf@...ux-mips.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux MIPS <linux-mips@...ux-mips.org>
Subject: Re: [PATCH 3/4] pinctrl: ralink: add binding documentation

On Thu, Oct 9, 2014 at 4:55 AM, John Crispin <blogic@...nwrt.org> wrote:

> Signed-off-by: John Crispin <blogic@...nwrt.org>

This does not seem complete since it lacks things like the very
controversial gpio-base thing.

> +++ b/Documentation/devicetree/bindings/pinctrl/ralink,rt2880-pinmux.txt
> @@ -0,0 +1,74 @@
> +Ralink rt2880 pinmux controller
> +
> +Required properties:
> +- compatible: "lantiq,rt2880-pinmux"
> +- reg: Should contain the physical address and length of the gpio/pinmux
> +  register range
> +
> +The rt2880 pinmux can only set the muxing of pin groups. muxing indiviual pins
> +is not supported. There is no pinconf support.
> +
> +Definition of mux function groups:
> +
> +Required subnode-properties:
> +- ralink,group : An array of strings. Each string contains the name of a group.
> +  Valid values for these names are listed below.
> +- ralink,function: A string containing the name of the function to mux to the
> +  group. Valid values for function names are listed below.

Just use "function" and "group" from the generic bindings.

Yours,
Linus Walleij
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