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Currently we have not explicitly defined the behaviour when the width and height of the writeback framebuffer do not match the width and height of the attached CRTC. Allow the driver to perform a scale operation to fit the content, so systems with scaling blocks in the writeback path can easily expose them. A partially filled buffer should never be returned, so failure remains an option for all the systems that don't have a scaler, or when scaler limits are exceeded. Cropping would make less sense, as the region to crop is underspecified without some other properties to define an origin. Signed-off-by: Derek Foreman <derek.foreman@collabora.com> Link: https://patch.msgid.link/20260602191754.79047-1-derek.foreman@collabora.com Signed-off-by: Daniel Stone <daniels@collabora.com> Reviewed-by: Daniel Stone <daniels@collabora.com>