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

From: Tero Kristo
Date: Mon Dec 31 2018 - 02:24:11 EST

On 28/12/2018 22:02, Tony Lindgren wrote:
* Andreas Kemnade <andreas@xxxxxxxxxxxx> [181227 20:13]:

On Tue, 4 Dec 2018 08:45:57 -0800
Tony Lindgren <tony@xxxxxxxxxxx> wrote:

* Andreas Kemnade <andreas@xxxxxxxxxxxx> [181204 06:17]:
On Mon, 3 Dec 2018 07:39:10 -0800
Tony Lindgren <tony@xxxxxxxxxxx> 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.

The only item requiring immediate fixing is the point Stephen made out, removing the usage of CLK_IS_BASIC from this patch.

Afaics, the reset related concerns Tony has can be handled later.


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..



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