On Thursday, May 14, 2020 12:58 AM, Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> wrote: > The zpos property is used by userspace to sort the order of planes. > While the property is not mandatory for drivers to implement, mixing > planes with and without zpos confuses userspace, and shall not be > allowed. Clarify this in the documentation and warn at runtime if the > drivers mixes planes with and without zpos properties. Thanks for the patch, this looks good to me! Acked-by: Simon Ser <contact@xxxxxxxxxxx>