linux-kernel - Re: [PATCH] w1: omap-hdq: Simplify driver with PM runtime autosuspend

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Message-ID: <CAHCN7xJ-ndGxz0DYSwnuDi+4Hu349RTCzHjsspx2evMvLDtDqA@mail.gmail.com>
Date:   Mon, 16 Dec 2019 07:57:14 -0600
From:   Adam Ford <aford173@...il.com>
To:     Andreas Kemnade <andreas@...nade.info>
Cc:     Tony Lindgren <tony@...mide.com>,
        Evgeniy Polyakov <zbr@...emap.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux-OMAP <linux-omap@...r.kernel.org>,
        "Andrew F . Davis" <afd@...com>,
        "H . Nikolaus Schaller" <hns@...delico.com>,
        Vignesh R <vigneshr@...com>
Subject: Re: [PATCH] w1: omap-hdq: Simplify driver with PM runtime autosuspend

On Mon, Dec 16, 2019 at 7:48 AM Andreas Kemnade <andreas@...nade.info> wrote:
>
> On Sun, 15 Dec 2019 19:16:37 -0800
> Tony Lindgren <tony@...mide.com> wrote:
>
> > * Tony Lindgren <tony@...mide.com> [191216 03:10]:
> > > Hi,
> > >
> > > * Andreas Kemnade <andreas@...nade.info> [191215 22:04]:
> > > > On Sun, 15 Dec 2019 09:38:17 -0800
> > > > If I remember correctly this thing is critical to get the hwmod out of
> > > > reset but I need to examine that again:
> > >
> > > Thanks for testing, yes that's what I thought might cause it
> > > too, but nope :)
> > >
> > > We currently disable interrupts for some reason after
> > > the first read. That won't play with runtime PM autosuspend
> > > at all as we never enable them again until the device has
> > > idled. Can you try the following additional patch on top?
> >
> > And we should probably do the following too to make sure
> > the mode is initialized before we call runtime PM.
> >
> CM_FCLKEN1/IDLEST1_CORE seem to behave, reading also works
>
> With these two additional patches this deserves a
> Tested-By: Andreas Kemnade <andreas@...nade.info> # gta04

Tony,

Any way you can do a V2 patch with the other stuff added?  Pulling the
patches from gmail doesn't work.  I think G-mail does something weird
because they don't apply cleanly, so I have to download the patches
from patchwork.  I should be able to test it today.

thanks

adam
>
> Regards,
> Andreas