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

Hi Joonyoung,

2015-06-12 Joonyoung Shim jy0922.shim@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@samsung.com

drivers/gpu/drm/exynos/exynos_drm_fimd.c | 2 ++ 1 file changed, 2 insertions(+)

Reviewed-by: Gustavo Padovan gustavo.padovan@collabora.co.uk

Gustavo