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SubjectRe: [RFC PATCH 6/7] dt-bindings: riscv: Remove "riscv,svXX" property from device-tree
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On Sun, 22 Mar 2020 04:00:27 PDT (-0700), alex@ghiti.fr wrote:
> This property can not be used before virtual memory is set up
> and then the distinction between sv39 and sv48 is done at runtime
> using SATP csr property: this property is now useless, so remove it.
>
> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
> Documentation/devicetree/bindings/riscv/cpus.yaml | 13 -------------
> 1 file changed, 13 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
> index 04819ad379c2..12baabbac213 100644
> --- a/Documentation/devicetree/bindings/riscv/cpus.yaml
> +++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
> @@ -39,19 +39,6 @@ properties:
> Identifies that the hart uses the RISC-V instruction set
> and identifies the type of the hart.
>
> - mmu-type:
> - allOf:
> - - $ref: "/schemas/types.yaml#/definitions/string"
> - - enum:
> - - riscv,sv32
> - - riscv,sv39
> - - riscv,sv48
> - description:
> - Identifies the MMU address translation mode used on this
> - hart. These values originate from the RISC-V Privileged
> - Specification document, available from
> - https://riscv.org/specifications/
> -
> riscv,isa:
> allOf:
> - $ref: "/schemas/types.yaml#/definitions/string"

I'd prefer if we continue to define this in the schema: while Linux won't use
it, it's still useful for other programs that want to statically determine the
available VA widths.

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