[PATCH v6 4/5] arm64: Add support for SMCCC TRNG entropy source

[Mark Brown]

On Wed, Jan 06, 2021 at 10:34:52AM +0000, Andre Przywara wrote:
> The ARM architected TRNG firmware interface, described in ARM spec
> DEN0098, defines an ARM SMCCC based interface to a true random number
> generator, provided by firmware.
> This can be discovered via the SMCCC >=v1.1 interface, and provides
> up to 192 bits of entropy per call.

Reviewed-by: Mark Brown <broonie at kernel.org>
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