linux-kernel - Re: [PATCH] pinctrl: ralink: mt76x8: fix pinmux function

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Date: Tue, 28 May 2024 15:54:04 +0200
From: Linus Walleij <linus.walleij@...aro.org>
To: liweihao <cn.liweihao@...il.com>
Cc: arinc.unal@...nc9.com, sergio.paracuellos@...il.com, sean.wang@...nel.org, 
	matthias.bgg@...il.com, angelogioacchino.delregno@...labora.com, 
	linux-mips@...r.kernel.org, linux-gpio@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pinctrl: ralink: mt76x8: fix pinmux function

On Mon, May 27, 2024 at 4:21 AM liweihao <cn.liweihao@...il.com> wrote:

> From: Weihao Li <cn.liweihao@...il.com>
>
> The current version of the pinctrl driver has some issues:
>
> 1. Duplicated "gpio" pmx function
>
> The common code will add a "gpio" pmx functon to every pin group, so
> it's not necessary to define a separate "gpio" pmx function in pin
> groups.
>
> 2. Duplicated pmx function name
>
> There are some same function name in different pin groups, which will
> cause some problems. For example, when we want to use PAD_GPIO0 as
> refclk output function, the common clk framework code will search the
> entire pin function lists, then return the first one matched, in this
> case the matched function list only include the PAD_CO_CLKO pin group
> because there are three "refclk" pin function, which is added by
> refclk_grp, spi_cs1_grp and gpio_grp.
>
> To solve this problem, a simple way is just add a pingrp refix to
> function name like mt7620 pinctrl driver does.
>
> 3. Useless "-" or "rsvd" functon
>
> It's really unnecessary to add a reserved pin mux function to the
> function lists, because we never use it.
>
> Signed-off-by: Weihao Li <cn.liweihao@...il.com>

The patch looks good to me and Sergio: patch applied so
it gets some testing in linux-next.

If Arinc has issues with it or something else occurs I can
always drop it again.

Yours,
Linus Walleij