Swap memory disabled at kernel level

Swap memory functionality is disabled at kernel level. Is this disabled on purpose, being an embedded board?
Would it be added later? or we need to build kernel from source in order to get this functionality?

total used free shared buff/cache available
Mem: 426M 46M 94M 21M 284M 329M
Swap: 0B 0B 0B

Have you installed zram-config?
Or does it not work?

I haven’t installed it, but I tried the conventional swap enabling commands which didn’t work

thank you