Re: [PATCHv2 00/15] Get MUSB PM runtime working again

Bin Liu
2016-05-18T18:10:20Z

On Wed, May 18, 2016 at 11:07:37AM -0700, Tony Lindgren wrote:
> * Bin Liu <b-liu-l0cyMroinI0@public.gmane.org> [160517 15:06]:
> > On Tue, May 17, 2016 at 02:54:04PM -0700, Tony Lindgren wrote:
> >
> > > s/pm_runtime_put/pm_runtime_put_sync/ will fix it. I'm wondering why
> > > it breaks though as dsps glue does not use autosuspend? It could also
> >
> > I am not familiar with pm-runtime framework, but I thought dsps glue
> > does use autosuspend.
> >
> > > be a case where the parent and child PM runtime use counts get out
> > > of sync?
> > >
> > > BTW, I did give my series a quick try here on j5eco-evm and that behaved
> > > for peripheral and host enumeration. It's pretty much the same setup as
> > > on am335x I believe.
> >
> > Does j5eco-evm have a otg port?
>
> Yes it has a mini-AB port and usb0_id is wired.
>
> > The case which is broken on mine is
>
> > - boot the board;
> > - modprobe g-zero;
> > - plug in a usb deivce with A-cable to the otg port;
> >
> > It generates drvvbus interrupt (0x100) and connect interrupt (0x10), but
> > then session bit is gone and vbus has no power, so enum failed.
>
> Is this with or without the $subject series?

Without.

>
> > I tried to enable some dynamic-debug log, but was unable to see any
> > glue. I will try to enable musb reg access log tomorrow to see if I can
> > find anything.
>
> OK, I'm looking at implementing proper PM runtime for dsps.
>
> Regards,
>
> Tony