From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tobias Jakobi Subject: Re: exynos4412: misc issues on Hardkernel Odroid boards Date: Mon, 09 Feb 2015 21:28:10 +0100 Message-ID: <54D9185A.10607@math.uni-bielefeld.de> References: <54D779FB.9070306@math.uni-bielefeld.de> <54D86913.2050109@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.math.uni-bielefeld.de ([129.70.45.10]:39202 "EHLO smtp.math.uni-bielefeld.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932799AbbBIU2L (ORCPT ); Mon, 9 Feb 2015 15:28:11 -0500 In-Reply-To: <54D86913.2050109@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Marek Szyprowski , linux-samsung-soc Cc: Sylwester Nawrocki Hello! Marek Szyprowski wrote: > I didn't observe any issues with 'ondemand' governor. I've just tested it > on next-20150204 with "[PATCH v2 0/3] Add support for hardware reset of > eMMC > card on reboot" patches added > (http://www.spinics.net/lists/linux-mmc/msg30621.html) and reboot works > fine. Since I'm not using an eMMC card, I don't think the pwrseq stuff is going to make a difference here. Have you checked this with the PS_HOLD patch applied, or without? Anyway, guess I'm going to recheck this, maybe with some other governors too. > This is known issue. To properly solve it, we need to rewrite exynos4 clock > driver and integrate power domain support for handling of ISP clocks. > Sylwester can provide more details. Oh, that sounds like quite some work. Looking forward to hear from Sylwester about this. > Right. That's because CPU is busy looping instead of proper shutdown. > I've just > posted a patch for solving this issue on all Exynos SoCs, see "[PATCH] > exynos: > pmu: use PS_HOLD based poweroff for all supported SoCs" thread. Like stated in my other mail, this got fixed by your patch. Thanks! > The fix for this issue has been queued to mmc-next: > https://git.linaro.org/people/ulf.hansson/mmc.git/commit/017210d1c0dc2e2d3b142985cb31d90b98dc0f0f Have removed my hotfix and applied this one. Haven't encountered and spinlock BUGs yet, but I'll keep on testing. With best wishes, Tobias