APE6EVM and Runtime PM

Kuninori Morimoto kuninori.morimoto.gx at renesas.com
Thu Apr 4 01:28:38 EDT 2013


Dear Simon

> > > in the course of looking look at consolidating our defconfigs I
> > > noticed that SMSC ethernet and rcar_thermal seem seem to not work when
> > > runtime PM is enabled.
> > > 
> > > I'm wondering if you have any ideas of what might be the cause of this
> > > or if you could give me some guidance on investigating this problem.
> > > 
> > > I assume that it relates to a clock or clocks not being enabled.
> > 
> > About rcar_thermal, it needs my patch which was sent to PM ML.
> > I got email from Zhang that he accepted my patch (pm_runtime support for thermal).
> > But it seems he didn't push his branch yet...
> > I guess I explained this on my [PATCH 0/x] email.
> 
> Thanks, sorry for missing that.
> 
> I guess we are down to just SMSC then.

I didn't check real board,
but I guess current SMSC IRQ came from IRQC,
and this IRQC needs MSTP 407.
But IRQC driver seems doesn't support PM_RUNTIME at this point.

Does your issue solve by adding MSTP 407 with CLK_ENABLE_ON_INIT ?
I'm not sure this is good solution, but quick-hack

Best regards
--
Kuninori Morimoto
 



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