[PATCH v2 4/7] dt-bindings: riscv: add Sxctr ISA extension description

[Conor Dooley]

On Thu, Jan 16, 2025 at 11:09:52PM +0000, Rajnesh Kanwal wrote:
> Add the S[m|s]ctr ISA extension description.
> 
> Signed-off-by: Rajnesh Kanwal <rkanwal at rivosinc.com>
> ---
>  .../devicetree/bindings/riscv/extensions.yaml      | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
> index 848354e3048f..8322503f0773 100644
> --- a/Documentation/devicetree/bindings/riscv/extensions.yaml
> +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
> @@ -167,6 +167,13 @@ properties:
>  	    extension allows other ISA extension to use indirect CSR access
>  	    mechanism in M-mode.
>  
> +        - const: smctr
> +          description: |
> +            The standard Smctr supervisor-level extension for the machine mode
> +            to enable recording limited branch history in a register-accessible
> +            internal core storage. Smctr depend on both the implementation of
> +            S-mode and the Sscsrind extension.

Please, like the other extensions, cite the commit (and repo) where the
extension was frozen or ratified.

> +
>  	- const: sscsrind
>            description: |
>              The standard Sscsrind supervisor-level extension extends the
> @@ -193,6 +200,13 @@ properties:
>              and mode-based filtering as ratified at commit 01d1df0 ("Add ability
>              to manually trigger workflow. (#2)") of riscv-count-overflow.
>  
> +        - const: ssctr
> +          description: |
> +            The standard Ssctr supervisor-level extension enables recording of
> +            limited branch history in a register-accessible internal core
> +            storage. Ssctr depend on both the implementation of S-mode and the
> +            Sscsrind extension.
> +
>          - const: ssnpm
>            description: |
>              The standard Ssnpm extension for next-mode pointer masking as
> -- 
> 2.34.1
> 
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