Hi,
On Thu, Nov 20, 2014 at 12:36 PM, Vivek Gautam gautamvivek1987@gmail.com wrote:
Hi Javier, Kevin,
On Wed, Nov 19, 2014 at 10:22 PM, Javier Martinez Canillas javier.martinez@collabora.co.uk wrote:
[adding Paolo and Vivek as cc]
Hello,
On 11/18/2014 07:41 PM, Kevin Hilman wrote:
It fixes the DRM deadlock, issue for me on exynos5800-peach-pi, but then it proceeds to panic in the workqueue code called by the asoc max98090 codec[1].
If I then disable CONFIG_SND_SOC_SNOW, I can get it to boot to a shell, but I still don't have display output.
Paolo Pisati pointed out in another thread that he needed the patch "[PATCH v2 2/2] arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy" is also needed to get display working for exynos on linux-next.
I've pinged Kukjin to apply this as a -rc fix since is needed after a5ec598 ("phy: exynos-dp-video: Use syscon support to control pmu register") landed in 3.18 which broke the Exynos Display Port PHY:
exynos-dp-video-phy 10040728.video-phy: Failed to lookup PMU regmap
I've an Exynos5800 Peach Pi now so I wanted to test display on it. Just $subject and [0] should be enough to have display working on Peach Pi with linux-next but it fails to me with:
exynos-mipi-video-phy 10040714.video-phy: can't request region for resource [mem 0x10040714-0x1004071f]
The same issue was reported by Paolo a couple of days ago [1].
Vivek,
Any idea what could cause this regression on linux-next? As reported by Paolo this works well for me in 3.18-rc5.
I tested linux-next on Exynos5800 peach-pi board with linux-next and and the two patches $Subject and [0].
Below is my git hash: 4d9e6ee drm/exynos: Move platform drivers registration to module init 4545ed4 POSTED: arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy 36391a5 Add linux-next specific files for 20141119 9b1ced1 Merge branch 'akpm/master' 282497e mm: add strictlimit knob
used exynos_defconfig
With this display works for me. Without $Subject patch i get lookup in drm.
Javier can you tell me your git hash. Was it on yesterday's linux-next ?
With 3.18-rc5 i could see display on Exynos5800 peach-pi with following git hash:
b6dca11 drm/exynos: dp: Remove support for unused dptx-phy 7cc5c2d ARM: exynos_defconfig: Enable options for display panel support d0aca5e arm: dts: Exynos5: Use pmu_system_controller phandle for dp phy fc14f9c Linux 3.18-rc5 e35c5a2 Merge tag 'armsoc-for-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
I don't need this drm lockup patch with 3.18-rc5 (with exynos_defconfig).
I am checking further with linux-samsung, coz i could see weird behavior as mentioned in [1] with linux-samsun/for-next merged with above git hash.