uboot/tools/binman/test/011_pack_align_size_power2.dts
<<
>>
Prefs
   1/dts-v1/;
   2
   3/ {
   4        #address-cells = <1>;
   5        #size-cells = <1>;
   6
   7        binman {
   8                u-boot {
   9                        align-size = <55>;
  10                };
  11        };
  12};
  13