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Date:   Thu, 24 May 2018 11:47:05 +0200
From:   Pavel Machek <pavel@ucw.cz>
To:     Tony Lindgren <tony@atomide.com>
Cc:     Aaro Koskinen <aaro.koskinen@iki.fi>,
        Pali =?iso-8859-1?Q?Roh=E1r?= <pali.rohar@gmail.com>,
        sre@kernel.org, kernel list <linux-kernel@vger.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        linux-omap@vger.kernel.org, khilman@kernel.org,
        ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com,
        serge@hallyn.com, abcloriens@gmail.com, clayton@craftyguy.net,
        martijn@brixit.nl, sakari.ailus@linux.intel.com,
        Filip =?utf-8?Q?Matijevi=C4=87?= <filip.matijevic.pz@gmail.com>,
        Thorsten Leemhuis <regressions@leemhuis.info>
Subject: Re: v4.17-rc1: regressions on N900, N950
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Hi!

> > > So... I did some experiments on v4.16.
> > >=20
> > > Swapping tsc2005@0 and lcd: acx565akm@2 entries in the dts does break
> > > stuff.
> > >=20
> > > I thought it might be due to vio regulator, but it does not appear
> > > so... screen still works with tsc2005 driver disabled in .config. (so
> > > there's noone to enable vio regulator).
> >=20
> > Deleting tsc2005@0 entry also breaks screen.
> >=20
> > Replacing tsc2005@0 entry with=20
> >=20
> >         foobar@0 {
> > 	               compatible =3D "not really with anything";
> >  		       spi-max-frequency =3D <6000000>;
> >  		       reg =3D <0>;
> >  };
> >=20
> > still results in working touchscreen, removing any of the three fields
> > breaks it again.
>=20
> I bisected one regression down, see "omapdrm regression in v4.17-rc serie=
s"
> not sure if it covers all the issues being discussed here though.

Reverting 24aac6011f70 fixes screen on n900 in v4.17-rc for me. (But
strange dependency on tsc2005@0 is still there).

Best regards,
									Pavel
--=20
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html

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