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Make an additional note on DRM format modifiers for x and y tiling. These format modifiers are defined for BDW+ platforms and therefore definition is not valid for older gens. This is due to address swizzling for tiled surfaces is no longer used. For newer platforms main memory controller has a more effective address swizzling algorithm. v2: Rephrase comment (Daniel) Signed-off-by: Mika Kahola <mika.kahola@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200506120827.12250-1-mika.kahola@intel.com