Hi Udit, > >>> --- a/arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi > >>> [..] > >> For completeness , this is ok to add this node but should be kept disabled > > Shouldn't it be "reserved" then, see [1]. > > yes, should be reserved. > > With marking status as reserved. > > Please use Reviewed-by: Udit Kumar Thanks. > >> similar to > >> > >> https://github.com/torvalds/linux/blob/master/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi#L662 > > j784s4, j721e and j721s2 have them enabled. What is the rule here? > > J784s4, j721e and j721s2 SOCs has two TRNG blocks, > > example for j721e, one is used by kernel [0] and another by optee [1]. > > > > > > You also disable the hwrng in optee in your evm according to [2]: > > CFG_WITH_SOFTWARE_PRNG=y > > We are planning to use this hardware block by secure firmware. > > Therefore request not to use by optee as well How will you be able to access the RNG from linux and u-boot? I'm asking because I'll need it in u-boot for the lwip stack and the HTTPS protocol. -michael