Question about hardware capabilities of Alta and software support for them

Hello. According to A311D’s datasheet, this SoC has a TRNG. Do we have software support for this in Linux? If yes, how do we access it? /dev/random?

Second, the datasheet mentions it has a Cortex-M4 builtin. is it true? is it available on Alta and is there software support for it?

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You can access it via /dev/hwrng. We recommend using rng-tools to seed /dev/urandom.

There is no Cortex M4. This is an optional component for audio specific applications.