linux-kernel - RE: Regression: i.MX6: pinctrl: fsl: add scu based pinctrl support

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Date:   Fri, 18 Jan 2019 08:29:03 +0000
From:   Aisheng Dong <aisheng.dong@....com>
To:     Mika Penttilä <mika.penttila@...tfour.com>,
        Fabio Estevam <festevam@...il.com>
CC:     "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: Regression: i.MX6: pinctrl: fsl: add scu based pinctrl support

> -----Original Message-----
> From: Mika Penttilä [mailto:mika.penttila@...tfour.com]
> Sent: Tuesday, January 15, 2019 1:18 AM
> 
> Hi!
> 
> On 14.1.2019 18.58, Fabio Estevam wrote:
> > Hi Mika,
> >
> > On Mon, Jan 14, 2019 at 8:21 AM Mika Penttilä
> > <mika.penttila@...tfour.com> wrote:
> >> Hello,
> >>
> >>
> >> The patch titled "pinctrl: fsl: add scu based pinctrl support" causes
> >> regression on i.MX6. Tested on a custom board based on i.MX6Q and
> >> sgtl5000 codec, there is no sound,  tested with simple wav playing.
> >>
> >> Reverting the patch makes audio work again.
> > Which kernel version do you use?
> >

[...]

> > Please let us know if you still have issues with such commit applied.
> 
> I am merging mainline and this regression is present in 5.0-rc2 so it should
> have the mentioned patch applied.
> 
> Obviously I had to revert them both ("pinctrl: imx: fix NO_PAD_CTL setting for
> MMIO pads"
>  and "pinctrl: fsl: add scu based pinctrl support"), and after that it works. Is
> there something more I could test?
> 

Any status update?

Can you please try enable CONFIG_DEBUG_PINCTRL which can help you locate
the root cause?
Don't forget to add "DEBUG" in kernel boot param. Or you can use dmesg.

Regards
Dong Aisheng

> 
> --Mika
>