Hello Arnd, On Thu, Mar 5, 2015 at 12:04 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Wednesday 04 March 2015 21:04:40 Arnd Bergmann wrote: >> On Tuesday 03 March 2015 04:00:14 Kukjin Kim wrote: >> > Please pull Samsung tmu and hdmi regression fixes for v4.0 and I know >> > this is quite big for fixes but I couldn't handle this series for >> > previous merge window because of dependency with driver side...sorry for >> > that and please pull so that we could support them in v4.0 on exynos >> > platforms. >> >> What kind of dependency do you have there? It really should not be >> necessary to wait for driver changes, unless you do an incompatible >> DT binding change, which you should avoid. >> >> I've pulled it into fixes, but won't forward it until I hear a >> good explanation. > > Even with both fixes-1 and fixes-2 applied, we still get boot failures > on Exynos: > > http://arm-soc.lixom.net/bootlogs/arm-soc/v4.0-rc2-104-g2ee4716/ > > Any idea what is going on? > Yes, the problem is the Exynos DRM driver which has a lot of issues. It's broken if CONFIG_DRM_EXYNOS_IOMMU is enabled which defaults to yes after commit 8dcc14f82f06 ("drm/exynos: IOMMU support should not be selectable by user"). I posted a patch to disable IOMMU support on Exynos to avoid these boot failures and also mentioned to Kukjin that it should be a fix for 4.0 [0]. But even with IOMMU disabled, the Exynos DRM is broken in some boards [1] so we may have to disable that driver until everything gets sorted out and is stable again. > Arnd > -- Best regards, Javier [0]: https://lkml.org/lkml/2015/3/3/60 [1]: https://lkml.org/lkml/2015/3/4/1070 -- 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
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