From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tobias Jakobi Subject: Re: [PATCH v2 0/6] Enable HDMI support on Exynos platforms Date: Tue, 20 Jan 2015 00:03:45 +0100 Message-ID: <54BD8D51.3050202@gmx.net> References: <1421141991-15155-1-git-send-email-m.szyprowski@samsung.com> <54B68A74.8070405@math.uni-bielefeld.de> <54B79123.4090200@samsung.com> <54B8533C.3070000@math.uni-bielefeld.de> <54B99178.1060006@gmx.net> <54BD3129.5090305@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Return-path: Received: from mout.gmx.net ([212.227.15.19]:61437 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751374AbbASXEA (ORCPT ); Mon, 19 Jan 2015 18:04:00 -0500 In-Reply-To: <54BD3129.5090305@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Marek Szyprowski , Tobias Jakobi , linux-samsung-soc Cc: Sylwester Nawrocki , Andrzej Hajda Hello! Marek Szyprowski wrote: > Thanks for you tests and pointing this issue. I turned out that the > initial fix proposed > by Andrzej Hajda > (http://www.spinics.net/lists/linux-samsung-soc/msg38915.html) worked > fine, while the final version merged to clock fixes ('clk: samsung: > exynos4: set parent > of sclk_hdmiphy to hdmi' - commit > df019a5c0f7083001cb694f44821ca506425bda2) doesn't work > properly. I should thank you for pushing all this code to mainline. It's really nice to see how all the pieces now come together. > Please check the following kernel tree - instead of hacking around hdmi > clock I've added > handling of it directly to drm mixer driver: > https://git.linaro.org/people/marek.szyprowski/linux-srpol.git/shortlog/refs/heads/v3.19-odroid-hdmi > > I hope that this will finally solve all mixer initialization related > issues (also for > Odroid XU3, discussed recently in the other thread). If it works fine, I > will resend > exynos4 hdmi patches to include this change. I have picked the additional patches to my tree, which currently has a bunch of other stuff in it, in particular v4 of the IOMMU series. Anyway, now the 'modetest' application immediately crashes the system, but I get a least something on the serial console: http://www.math.uni-bielefeld.de/~tjakobi/archive/odroid_modetest_crash_sysmmu.txt So this is probably due to the IOMMU. Please note that DRM IOMMU support (CONFIG_DRM_EXYNOS_IOMMU) was disabled (!) in my config. CONFIG_EXYNOS_IOMMU however was on. I'm going to retest with the IOMMU series removed and CONFIG_EXYNOS_IOMMU disabled as well. Just posting this already since you're probably interested in these 'side-issues' as well. With best wishes, Tobias