Re: [PATCH 01/15] i2c/powermac: Register i2c devices from device-tree

On Sun, 2012-06-10 at 09:13 +0200, Andreas Schwab wrote:

Benjamin Herrenschmidt [off-list ref] writes:

quoted

On Sun, 2012-06-10 at 00:59 +0200, Andreas Schwab wrote:

quoted

It's a PowerMac G5.  During booting I see this:

There's about half a dozen versions of those :-) I assume the older
PowerMac7,2 ?

Yes, that's right.  Sorry for being imprecise.

quoted

quoted

PowerMac i2c bus pmu 2 registered
PowerMac i2c bus pmu 1 registered
PowerMac i2c bus mac-io 0 registered
i2c i2c-5: i2c-powermac: modalias failure
on /ht@0,f2000000/pci@1/mac-io@7/i2c@18000/deq@6a
i2c i2c-5: i2c-powermac: invalid reg
on /ht@0,f2000000/pci@1/mac-io@7/i2c@18000/i2c-modem
PowerMac i2c bus u3 1 registered
i2c i2c-6: i2c-powermac: modalias failure
on /u3@0,f8000000/i2c@f8001000/cereal@1c0
PowerMac i2c bus u3 0 registered

The deq node has no compatible, perhaps the modalias can be
constructed out of the name instead?

But where is the deq node ? Under i2c or under sound ?

It looks like /ht@0,f2000000/pci@1/mac-io@7/i2c@18000/deq@6a is under
i2c.

Ah, excellent, so a small quirk in i2c_powermac is the way to go then,
we can detect it by name and hack up something. Either that or even
better, in prom_init, we could add the missing property to the
device-tree.

Any chance you can try that ? (Look at other examples of DT fixups in
prom_init.c and don't forget the RELOC() around strings :-)

Cheers,
Ben.