+Simon Glass
On Thu, Oct 3, 2013 at 2:25 PM, Albert ARIBAUD <albert.u.b...@aribaud.net>wrote: > Hi Ajay, > > On Thu, 03 Oct 2013 14:34:20 +0530, Ajay Kumar > <ajaykumar...@samsung.com> wrote: > > > If the exynos display controller is still active when Linux starts, > > then it will result in a kernel panic while FIMD sysmmu driver is > > getting probed. > > Calling exynos_fimd_lcd_disable() before jumping into kernel > > disables the display controller by switching off the windows, > > hence resolving the kernel panic which arises from sysmmu driver. > > > > Create an Exynos specific definition for the weak function > > arch_cleanup_before_linux(), and then place the call to > > exynos_fimd_lcd_disable() inside the overrided definition of > > arch_cleanup_before_linux(). > > > > Signed-off-by: Ajay Kumar <ajaykumar...@samsung.com> > > Signed-off-by: Simon Glass <s...@chromium.org> > > --- > > Why should the fix to this situation be making U-Boot disable the > display controller rather than making Linux able to cope with an > already active display controller? > > Besides, fixing Linux would allow seamless booting displays, without an > ugly off-on glitch. > > Amicalement, > -- > Albert. > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot >
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