linux-kernel - Re: [PATCH v2 2/3] clk: ti: check clock type before doing autoidle ops

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Message-ID: <20181228200229.GY6707@atomide.com>
Date:   Fri, 28 Dec 2018 12:02:29 -0800
From:   Tony Lindgren <tony@...mide.com>
To:     Andreas Kemnade <andreas@...nade.info>
Cc:     Stephen Boyd <sboyd@...nel.org>, Tero Kristo <t-kristo@...com>,
        bcousson@...libre.com, letux-kernel@...nphoenux.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org, mturquette@...libre.com, paul@...an.com
Subject: Re: [PATCH v2 2/3] clk: ti: check clock type before doing autoidle
 ops

* Andreas Kemnade <andreas@...nade.info> [181227 20:13]:
> Hi,
> 
> On Tue, 4 Dec 2018 08:45:57 -0800
> Tony Lindgren <tony@...mide.com> wrote:
> 
> > * Andreas Kemnade <andreas@...nade.info> [181204 06:17]:
> > > On Mon, 3 Dec 2018 07:39:10 -0800
> > > Tony Lindgren <tony@...mide.com> wrote:  
> > > > The consumer device stays active just fine with PM runtime
> > > > calls. So yes, the problem is keeping a clock controller forced
> > > > active for the period of consumer device reset. Other than
> > > > that typically autoidle can be just kept enabled.
> > > >   
> > > Are we still talking about the same problem? Maybe I am losing track
> > > here. Just to make sure. 
> > > The patch series was about disabling autoidle for devices which cannot
> > > work with it during normal operation. Not during reset or something
> > > like that. 
> > > Or is the keep-clock-active-during-reset just a requirement for bigger
> > > restructuring ideas?  
> > 
> > Yeah there are two issues: The fix needed for the issue you brought up,
> > and also how to let a reset driver to block autoidle for reset.
> > 
> Hmm, is this set now waiting for the famous "somebody" fixing all
> the stuff?

Well I think we're still waiting on Tero to comment on this.

> What are currently visible symptoms for the driver not blocking
> autoidle for reset? Maybe I can at least test something there. I have
> also omap5 here.

Oh that's just for making drivers/reset drivers to work in
the long run. Let's keep that separate from these fixes..

Regards,

Tony