20:44 <austriancoder> DPA: sure.. modifier is based on DRM_MODIFIER_XXX and helps for format negotiation. For instance, imx6qp has an extra ip block (prg) that can handle the tiled vivante formats, where as imx6q only supports linear format. and layout is the used tiling format

21:14 <DPA> austriancoder: So, in the kmsro + scanout case, does that mean there is a benefit to add padding based on the layout rather than the modifier?