linux-kernel - Re: [PATCH 2/2] pinctrl: starfive: jh7100: ignore disabled device tree nodes

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Message-ID: <20231204080801.uo8nzeyU@linutronix.de>
Date:   Mon, 4 Dec 2023 09:08:01 +0100
From:   Nam Cao <namcao@...utronix.de>
To:     Emil Renner Berthing <emil.renner.berthing@...onical.com>
Cc:     Emil Renner Berthing <kernel@...il.dk>,
        Jianlong Huang <jianlong.huang@...rfivetech.com>,
        Hal Feng <hal.feng@...rfivetech.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Huan Feng <huan.feng@...rfivetech.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Drew Fustini <drew@...gleboard.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH 2/2] pinctrl: starfive: jh7100: ignore disabled device
 tree nodes

On Fri, Dec 01, 2023 at 03:43:04PM +0100, Emil Renner Berthing wrote:
> I just noticed the Allwinner D1 device trees use /omit-if-no-ref/ in front of
> the pin group nodes. I think all current pin group nodes (for the JH7100 at
> least) are used by some peripheral, so if you're removing peripherals from the
> device tree you should be removing the reference too and this scheme should
> work for you.

If I am not mistaken, /omit-if-no-ref/ (and similar stuffs like
/delete-node/ and /delete-property/) is only for compile-time node
removal. It doesn't do anything with device tree overlay.

Best regards,
Nam