Hello,
On 2015-01-20 00:03, Tobias Jakobi wrote:
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.
This is a known issue. When Exynos IOMMU DRM driver is enabled, you need
also
to enabled CONFIG_DRM_EXYNOS_IOMMU, otherwise the driver will crash on init.
This also need to be fixed, but for the time being I focused on other
issues...
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.
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
