[PATCH v3 05/20] dt-bindings: riscv: add scalar crypto ISA extensions description

[Conor Dooley]

Yo,

On Tue, Nov 07, 2023 at 11:55:41AM +0100, Clément Léger wrote:
> +        - const: zkr
> +          description:
> +            The standard Zkr entropy source extension as ratified in version
> +            1.0 of RISC-V Cryptography Extensions Volume I specification.

So the topic of the seed CSR came up on the U-Boot ML in the last few
days:
https://lore.kernel.org/u-boot/20231107212431.GP6601@bill-the-cat
I think we need to document that having zkr in riscv,isa-extensions
means that the CSR is accessible at the privilege level to which that
devicetree has been provided.
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