linux-kernel - Re: [PATCH 0/2] gpiolib: of: Introduce hook for missing gpio-ranges

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Message-ID: <CACRpkdb4dPkFrKsfQmvyLO0RHCJsZYwULncDqbX5zkJqvmbPTw@mail.gmail.com>
Date:   Tue, 19 Apr 2022 23:18:48 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Stefan Wahren <stefan.wahren@...e.com>
Cc:     Bartosz Golaszewski <brgl@...ev.pl>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Phil Elwell <phil@...pberrypi.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 0/2] gpiolib: of: Introduce hook for missing gpio-ranges

On Sat, Apr 9, 2022 at 11:52 AM Stefan Wahren <stefan.wahren@...e.com> wrote:

> This patch series tries to provide backward compatibility for DTB which
> lacks the gpio-ranges property.
>
> The commit ("pinctrl: msm: fix gpio-hog related boot issues") by Christian
> Lamparter already contains a fallback in case the gpio-ranges property
> is missing. But this approach doesn't work on BCM2835 with a gpio-hog
> defined for the SoC GPIOs.
>
> Based Christian's on explanation i conclude that the fallback must happen
> during the gpiochip_add() call and not afterwards. So the approach is to
> call an optional hook, which can be implemented in the platform driver.
>
> This series has been tested on Raspberry Pi 3 B Plus.
>
> Changes since RFC:
> - just add all collected Fixes, Reviewed-by, Tested-by and Acked-by

Patches applied!

Sorry for being a bit slow on this :/

Yours,
Linus Walleij