Re: [PATCH v2 04/12] drm/sun4i: engine: Add a custom crtc atomic_check

On Mon, Dec 18, 2017 at 10:57 PM, Maxime Ripard maxime.ripard@free-electrons.com wrote:

We have some restrictions on what the planes and CRTC can provide that are tied to only one generation of display engines.

For example, on the first generation, we can only have one YUV plane or one plane that uses the frontend output.

Let's allow our engines to provide an atomic_check callback to validate the current configuration.

Reviewed-by: Neil Armstrong narmstrong@baylibre.com Signed-off-by: Maxime Ripard maxime.ripard@free-electrons.com

Reviewed-by: Chen-Yu Tsai wens@csie.org