arch/arm/boot/dts/overlays/hat_map.dts

   1 /dts-v1/;
   2
   3 / {
   4         iqaudio-pi-codecplus {
   5                 uuid = [ dc1c9594 c1ab 4c6c acda a88dc59a3c5b ];
   6                 overlay = "iqaudio-codec";
   7         };
   8
   9         recalbox-rgbdual {
  10                 uuid = [ 1c955808 681f 4bbc a2ef b7ea47cd388e ];
  11                 overlay = "recalboxrgbdual";
  12         };
  13 };