Re: [PATCH v4 00/14] ARM: dts: r8a779x: use demuxer for I2C

[Simon Horman <horms@verge.net.au>]

Hi Wolfram,

On Wed, Nov 09, 2016 at 09:59:54AM +0100, Wolfram Sang wrote:
> Hi Simon,
> 
> > I have tested these patches on alt, gose, lager and koelsch.
> 
> Wow, that was quick. Thank you!
> 
> > The switching part seems to work fine, in so far as my test script
> > succeeds. However, it seems that some IP blocks are not able to handle
> > this switching. In particular I needed to disable VIDEO_RCAR_VIN and 
> > REGULATOR_DA9210 to avoid errors shown in the logs below.
> 
> Yes. Probably we should activate the shiny new DEBUG_TEST_DRIVER_REMOVE
> and if that passes, we should be safe.
> 
> > My suggestion is to drop the following patches until those problems
> > can be sorted out, most likely via driver updates.
> > 
> > ARM: dts: alt: use demuxer for I2C1
> > ARM: dts: gose: use demuxer for I2C2
> > ARM: dts: lager: use demuxer for IIC2/I2C2
> > ARM: dts: lager: use demuxer for IIC3/I2C3
> > ARM: dts: koelsch: use demuxer for I2C2
> 
> OK. I'll try to have a look at those drivers nonetheless, because
> rebasing these patches is a bit of a hazzle once new i2c slaves were
> added to the busses. But I'll juest resend the patches along with my
> fixes if I really can find the time.
> 
> > I am not in a position to test silk or porter at this time.
> > But by the same reasoning above I wonder if the following should
> > be dropped for now.
> > 
> > ARM: dts: gose: use demuxer for I2C2
> 
> I assume you mean 'porter' here.
> 
> > ARM: dts: silk: use demuxer for I2C1

As per our discussion on IRC this morning I have queued up the following.
We can revisit the remaining patches once the issues described above
are resolved one way or another.

ARM: dts: alt: use demuxer for I2C4
ARM: dts: gose: use demuxer for I2C4
ARM: dts: koelsch: use demuxer for I2C4
ARM: dts: koelsch: use demuxer for I2C1
ARM: dts: lager: use demuxer for IIC1/I2C1
ARM: dts: lager: rename and reindex i2cexio