Maxime Ripard [off-list ref] writes:

On Tue, May 12, 2015 at 03:35:50PM -0700, Stephen Boyd wrote:

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On 05/08/15 03:02, Maxime Ripard wrote:

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On Thu, May 07, 2015 at 02:03:57PM -0700, Stephen Boyd wrote:

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On 05/07/15 08:17, Kevin Hilman wrote:

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On Fri, May 1, 2015 at 4:40 PM, Stephen Boyd [off-list ref] wrote:

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On 05/01/15 15:07, Heiko St?bner wrote:

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Am Freitag, 1. Mai 2015, 13:52:47 schrieb Stephen Boyd:

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Instead I guess we could hook it less deep into clk_get_sys, like in the
following patch?

It looks like it will work at least, but still I'd prefer to keep the
orphan check contained to clk.c. How about this compile tested only patch?

I gave this a spin on my rk3288-firefly board. It still boots, the clock tree
looks the same and it also still defers nicely in the scenario I needed it
for. The implementation also looks nice - and of course much more compact than
my check in two places :-) . I don't know if you want to put this as follow-up
on top or fold it into the original orphan-check, so in any case

Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>

Thanks. I'm leaning towards tossing your patch 2/2 and replacing it with
my patch and a note that it's based on an earlier patch from you.

It appears this has landed in linux-next in the form of 882667c1fcf1
clk: prevent orphan clocks from being used.  A bunch of boot failures
for sunxi in today's linux-next[1] were bisected down to that patch.

I confirmed that reverting that commit on top of next/master gets
sunxi booting again.

Thanks for the report. I've removed the two clk orphan patches from
clk-next. Would it be possible to try with next-20150507 and
clk_ignore_unused on the command line?

This makes it work, but it's not really an option.

Hmm.. I thought it didn't fix it for Kevin. Confused.

I'm too, but it does fix things here.

To be more precise on what I tested.  I used next-20150507 and tested on
4 different sunxi platforms.  First test was "normal" commandline,
second was with clk_ignore_unused appended:

  - cubie: fail, fail
  - cubie2: fail, fail
  - bananpi: fail, pass
  - cubietruck: fail, pass

So it seems to have some effect, but by itself, doesn't fix the issue.

Kevin