[PATCH v2 3/3] drm/exynos: initialize VIDCON0 when fimd is disabled

Gustavo Padovan gustavo.padovan at collabora.co.uk
Mon Jun 15 13:44:15 PDT 2015

Hi Joonyoung,

2015-06-12 Joonyoung Shim <jy0922.shim at samsung.com>:

> When the fimd is disabled by fimd_disable(), enabled overlay layers also
> are disabled. If clocks for fimd are enabled by fimd_enable() on this
> case, it can lead IOMMU page fault. The reason is that VIDCON0_ENVID and
> VIDCON0_ENVID_F bits of VIDCON0 register are set still even though fimd
> is disabled, so it may continue display output of prior when clocks for
> fimd are enabled again.
> Signed-off-by: Joonyoung Shim <jy0922.shim at samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_fimd.c | 2 ++
>  1 file changed, 2 insertions(+)

Reviewed-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>


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