linux-kernel - Re: [PATCH v3] pinctrl: tegra: Add support to display pin function

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Message-ID: <CACRpkdbZ0cxA_y=6j_QQpF1SQ1q4hw-qUyeOnEK-+cLBd=gjCg@mail.gmail.com>
Date:   Wed, 27 Sep 2023 10:54:15 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc:     Prathamesh Shete <pshete@...dia.com>, thierry.reding@...il.com,
        jonathanh@...dia.com, linux-gpio@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] pinctrl: tegra: Add support to display pin function

On Mon, Sep 25, 2023 at 6:30 PM Luca Ceresoli <luca.ceresoli@...tlin.com> wrote:

> The symptom is that i2c3 is not working anymore, the I2C lines being
> always high. No other known issues at the moment.

Hm....

>> +     {"nvidia,function",             TEGRA_PINCONF_PARAM_FUNCTION},
>
> FYI, I reduced your patch to only this line plus the one in the
> pinctrl-tegra.h and the problem appears as well.

I think there is a conflict now, that the pinconf is "stealing" the function
assignment from the pinmux call.

It's just a debugprint, I will revert the patch, Luca can investigate and you
can test a new patch then we will merge that.

Yours,
Linus Walleij