linux-kernel - Re: [PATCH v3 0/2] clk: improve handling of orphan clocks

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Date:	Fri, 8 May 2015 14:41:40 +0300
From:	Tero Kristo <t-kristo@...com>
To:	Stephen Boyd <sboyd@...eaurora.org>,
	Heiko Stübner 
	<heiko@...ech.de>
CC:	<mturquette@...aro.org>, <dianders@...omium.org>,
	<linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Alex Elder <elder@...aro.org>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Max Filippov <jcmvbkbc@...il.com>, <kernel@...gutronix.de>,
	Zhangfei Gao <zhangfei.gao@...aro.org>,
	Santosh Shilimkar <ssantosh@...nel.org>,
	Chao Xie <chao.xie@...vell.com>,
	Jason Cooper <jason@...edaemon.net>,
	Stefan Wahren <stefan.wahren@...e.com>,
	Andrew Bresticker <abrestic@...omium.org>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Georgi Djakov <georgi.djakov@...aro.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Barry Song <baohua@...nel.org>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>,
	Viresh Kumar <viresh.linux@...il.com>,
	Gabriel FERNANDEZ <gabriel.fernandez@...com>,
	<emilio@...pez.com.ar>,
	Peter De Sc hrijver <pdeschrijver@...dia.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Pawel Moll <pawel.moll@....com>,
	Michal Simek <michal.simek@...inx.com>
Subject: Re: [PATCH v3 0/2] clk: improve handling of orphan clocks

On 05/07/2015 09:18 PM, Stephen Boyd wrote:
> On 05/07/15 01:22, Tero Kristo wrote:
>> On 05/02/2015 02:40 AM, Stephen Boyd wrote:
>>> On 05/01/15 15:07, Heiko Stübner wrote:
>>>> Am Freitag, 1. Mai 2015, 13:52:47 schrieb Stephen Boyd:
>>>>
>>>>>> 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@...ech.de>
>>>> Reviewed-by: Heiko Stuebner <heiko@...ech.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.
>>
>> FWIW, just gave a try for these two patches on all TI boards I have
>> access to.
>>
>> Tested-by: Tero Kristo <t-kristo@...com>
>>
>> I didn't try your evolved patch though, as you don't seem to have made
>> your mind yet.
>>
>
> Thanks. Can you try the evolved patch? It's in linux-next now as commit
> 882667c1fcf1, and it seems to at least break sunxi boot. I'd be
> interested if it broke TI boards.

Just tried it out, boots fine on all these:

   : Board           : Boot commit                    log
  1: am335x-evm      : PASS 4.1.0-rc2-next-20150507   am335x-evm.txt
  2: am335x-evmsk    : PASS 4.1.0-rc2-next-20150507   am335x-sk.txt
  3: am3517-evm      : PASS 4.1.0-rc2-next-20150507   am3517-evm.txt
  4: am43x-epos-evm  : PASS 4.1.0-rc2-next-20150507   am43xx-epos.txt
  5: am437x-gp-evm   : PASS 4.1.0-rc2-next-20150507   am43xx-gpevm.txt
  6: am57xx-evm      : PASS 4.1.0-rc2-next-20150507   am57xx-evm.txt
  7: omap3-beagle-xm : PASS 4.1.0-rc2-next-20150507   beagleboard.txt
  8: omap3-beagle    : PASS 4.1.0-rc2-next-20150507 
beagleboard-vanilla.txt
  9: am335x-boneblack: PASS 4.1.0-rc2-next-20150507   beaglebone-black.txt
10: am335x-bone     : PASS 4.1.0-rc2-next-20150507   beaglebone.txt
11: dra7xx-evm      : PASS 4.1.0-rc2-next-20150507   dra7xx-evm.txt
12: omap3-n900      : PASS 4.1.0-rc2-next-20150507   n900.txt
13: omap5-uevm      : PASS 4.1.0-rc2-next-20150507   omap5-evm.txt
14: omap4-panda-es  : PASS 4.1.0-rc2-next-20150507   pandaboard-es.txt
15: omap4-panda     : PASS 4.1.0-rc2-next-20150507   pandaboard-vanilla.txt
16: omap2430-sdp    : PASS 4.1.0-rc2-next-20150507   sdp2430.txt
17: omap3430-sdp    : PASS 4.1.0-rc2-next-20150507   sdp3430.txt
18: omap4-sdp-es23plus: PASS 4.1.0-rc2-next-20150507   sdp4430.txt
TOTAL = 18 boards, Booted Boards = 18, No Boot boards = 0

TI boards do not have any orphan clocks.

-Tero
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