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

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Date:   Thu, 28 Sep 2023 08:53:19 +0200
From:   Luca Ceresoli <luca.ceresoli@...tlin.com>
To:     Linus Walleij <linus.walleij@...aro.org>
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

Hello Linus, Prathamesh,

On Wed, 27 Sep 2023 10:54:15 +0200
Linus Walleij <linus.walleij@...aro.org> wrote:

> 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

Thanks for the quick revert Linus.

> can test a new patch then we will merge that.

Prathamesh, if you send a new patch it would be great if you can Cc: me so I
can test it.

Best regards,
Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com