From mboxrd@z Thu Jan 1 00:00:00 1970 From: khilman@kernel.org (Kevin Hilman) Date: Wed, 13 May 2015 07:33:54 -0700 Subject: [PATCH v3 0/2] clk: improve handling of orphan clocks In-Reply-To: <20150513130304.GA4004@lukather> (Maxime Ripard's message of "Wed, 13 May 2015 15:03:04 +0200") References: <1429735986-18592-1-git-send-email-heiko@sntech.de> <1981330.kGUrTurMy5@diego> <5543E79F.2080400@codeaurora.org> <22709390.NTAlubMgNB@diego> <55440EDA.4030905@codeaurora.org> <554BD33D.7050907@codeaurora.org> <20150508100247.GQ11057@lukather> <55528046.4030107@codeaurora.org> <20150513130304.GA4004@lukather> Message-ID: <7hiobw8s31.fsf@deeprootsystems.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Maxime Ripard writes: > On Tue, May 12, 2015 at 03:35:50PM -0700, Stephen Boyd wrote: >> On 05/08/15 03:02, Maxime Ripard wrote: >> > On Thu, May 07, 2015 at 02:03:57PM -0700, Stephen Boyd wrote: >> >> On 05/07/15 08:17, Kevin Hilman wrote: >> >>> On Fri, May 1, 2015 at 4:40 PM, Stephen Boyd wrote: >> >>>> On 05/01/15 15:07, Heiko St?bner 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 >> >>>>> Reviewed-by: Heiko Stuebner >> >>>> 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