Messages in this thread |  | | From | Kevin Hilman <> | Subject | Re: [PATCH 1/1] ARM: exynos_defconfig: Disable IOMMU support | Date | Tue, 03 Mar 2015 12:36:08 -0800 |
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Javier Martinez Canillas <javier.martinez@collabora.co.uk> writes:
> Enabling Exynos DRM IOMMU support for Exynos is currently broken and > causes a BUG on exynos-iommu driver. This was not an issue since the > options was disabled in exynos_defconfig but after commit 8dcc14f82f06 > ("drm/exynos: IOMMU support should not be selectable by user"), it is > selected if EXYNOS_IOMMU is enabled which is in exynos_defconfig. > > So a kernel built using exynos_defconfig after the mentioned commit > fails to boot [0]. Disable IOMMU support in Exynos defconfig until > things get sorted out.
So some other exynos boards started failing in next-20150303[1], and appear are DRM failures.
Interestingly, (re)enabling CONFIG_EXYNOS_IOMMU for these cause things to work again. Even more intersting, with IOMMU enabled, peach-pi is
I'm starting to think it's the DRM driver that needs to be disabled until it actually gets some testing, rathre than disabling IOMMU.
Kevin
[1] http://kernelci.org/boot/?next-20150303&fail
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