choice
prompt "select trng type "
help
select trng type
config TRNG_CK
bool "csky trng"
help
select the ck trng driver
config TRNG_ZX29
bool "zx29 trng"
help
select the zx29 trng driver
config TRNG_XX
bool "example trng"
help
this option for test
endchoice