Re: [PATCH v4 07/14] ARM: dts: koelsch: use demuxer for I2C4

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On Wed, Nov 16, 2016 at 11:35:22AM +0100, Geert Uytterhoeven wrote:
> Hi Simon,
> 
> On Tue, Nov 15, 2016 at 6:44 PM, Simon Horman <horms@xxxxxxxxxxxx> wrote:
> >> i2c4 shares pins with vin0. Hence enabling the former breaks the latter:
> >>
> >>     sh-pfc e6060000.pfc: pin GP_4_13 already requested by
> >> e6520000.i2c; cannot claim for e6ef0000.video
> >>     sh-pfc e6060000.pfc: pin-141 (e6ef0000.video) status -22
> >>     sh-pfc e6060000.pfc: could not request pin 141 (GP_4_13) from
> >> group vin0_data24  on device sh-pfc
> >>     rcar-vin e6ef0000.video: Error applying setting, reverse things back
> >>     rcar-vin: probe of e6ef0000.video failed with error -22
> >>
> >> There may be similar issues on other boards. Haven't checked yet.
> >
> > Thanks, I will drop this patch for now.
> >
> > I checked the boot logs of other boards with similar patches and didn't see
> > anything there.
> 
> Do you have CONFIG_VIDEO_ADV7604=y?

No, mainly because its not in shmobile_defconfig.

I tried again with that option enabled and still didn't see
anything of interest in kernel log.

> I expect the issue to be present on gose, too. So far I didn't see it
> there, yet.
> But the vin DTS of gose is different from koelsch, causing vin0 not to be
> initialized?

It seems so.



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