532d003f5f
With VIDEO_COPY enabled, only the modified parts of the frame buffer are intended to be copied to the hardware. Add a test that checks this, by overwriting contents we prepared without telling the video uclass and then checking if the overwritten contents have been redrawn on the next sync. Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/u-boot/20230821135111.3558478-4-alpernebiyasak@gmail.com/