From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Pisati Subject: Re: [RFC PATCH 1/1] drm/exynos: Move platform drivers registration to module init Date: Fri, 21 Nov 2014 00:49:53 +0100 Message-ID: <20141120234953.GA4010@luxor.wired.org> References: <1416318821-7925-1-git-send-email-javier.martinez@collabora.co.uk> <7hh9xwxsev.fsf@deeprootsystems.com> <546CCAB8.9050402@collabora.co.uk> <7hppchsu29.fsf@deeprootsystems.com> <546E293D.9000300@collabora.co.uk> <7hbno1spdt.fsf@deeprootsystems.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-wi0-f182.google.com ([209.85.212.182]:50028 "EHLO mail-wi0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756624AbaKTXt4 (ORCPT ); Thu, 20 Nov 2014 18:49:56 -0500 Received: by mail-wi0-f182.google.com with SMTP id h11so7072836wiw.15 for ; Thu, 20 Nov 2014 15:49:55 -0800 (PST) Content-Disposition: inline In-Reply-To: <7hbno1spdt.fsf@deeprootsystems.com> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Kevin Hilman Cc: Javier Martinez Canillas , Vivek Gautam , Inki Dae , Andrzej Hajda , Krzysztof Kozlowski , "dri-devel@lists.freedesktop.org" , "linux-samsung-soc@vger.kernel.org" , Paolo Pisati , Vivek Gautam On Thu, Nov 20, 2014 at 10:22:54AM -0800, Kevin Hilman wrote: > Javier Martinez Canillas writes: > > > Hello, > > > > For completeness I'll comment what we talked with Kevin on IRC > > since probably this is the same issue that Paolo is facing. > > > > On 11/20/2014 05:41 PM, Kevin Hilman wrote: > >> Peach # setenv preboot "usb start; sleep 1"setenv bootargs > >> console=tty1 console=ttySAC3,115200 debug earlyprintk rw > >> root=/dev/mmcblk1p3 rootwait rootfstype=ext3 > > > > My kernel command line is almost the same with the difference that I'm using > > clk_ignore_unused and I just checked that not passing that parameter, makes > > linux-next to hang showing the same output log that Kevin reported. > > Ah! Good find. I confirm that adding clk_ignore_unused is getting me > booting again, but of course that is just masking a problem, so I hope > someone can shed light on which clock isn't being correctly managed. > > Might I also suggest that folks have their default command-line to *not* > use clk_ignore_unused, since it's primary job is to workaround clock > bugs. i'm testing kgene/for-next (not linux-next), with: flag@peachpi:~/linux$ cat /proc/cmdline console=tty1 console=ttySAC3,115200 debug earlyprintk rw rootwait root=/dev/mmcblk1p3 adding clk_ignore_unused didn't make any difference: it hangs on boot showing a black screen with backlight on. vanilla kgene/for-next as of today: 7552917 Revert "ARM: exynos_defconfig: Enable options for display panel support" ff0391a Merge branch 'v3.19-samsung-defconfig' into for-next 26c6283 Merge branch 'v3.18-samsung-fixes' into for-next cf864fd Merge branch 'v3.18-samsung-defconfig' into for-next 98b6380 ARM: exynos_defconfig: Enable max77802 rtc and clock drivers 839275c ARM: exynos_defconfig: Use 16 minors per MMC block device 0526f27 ARM: dts: Explicitly set dr_mode on exynos5250-snow fc14f9c Linux 3.18-rc5 ... plus 5e1e068 arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy 36d908e drm/exynos: dp: Remove support for unused dptx-phy 624bff2 POSTED: mfd: syscon: Decouple syscon interface from syscon devices 68944e3 Revert "Revert "ARM: exynos_defconfig: Enable options for display panel support"" vanilla exynos_defconfig with SND_SOC_SNOW disabled. I should probably try linux-next at this point, but i wonder if people who reported kgene/for-next working were testing with a vanilla exynos_defconfig on a peach pi. -- bye, p.