linux-kernel - Re: [PATCH v3 RESEND 10/13] dt-bindings: riscv: Add Andes PMU extension description

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Message-ID: <20231023-spectacle-module-0516fb35995a@spud>
Date:   Mon, 23 Oct 2023 13:03:53 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Yu Chien Peter Lin <peterlin@...estech.com>
Cc:     acme@...nel.org, adrian.hunter@...el.com, ajones@...tanamicro.com,
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Subject: Re: [PATCH v3 RESEND 10/13] dt-bindings: riscv: Add Andes PMU
 extension description

On Mon, Oct 23, 2023 at 08:40:57AM +0800, Yu Chien Peter Lin wrote:
> Document the ISA string for Andes Technology performance monitor
> extension which provides counter overflow interrupt and mode
> filtering mechanisms.
> 
> Signed-off-by: Yu Chien Peter Lin <peterlin@...estech.com>
> ---
> Changes v2 -> v3:
>   - New patch
> ---
>  Documentation/devicetree/bindings/riscv/extensions.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
> index 5e9291d258d5..e0694e2adbc2 100644
> --- a/Documentation/devicetree/bindings/riscv/extensions.yaml
> +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
> @@ -246,6 +246,13 @@ properties:
>              in commit 2e5236 ("Ztso is now ratified.") of the
>              riscv-isa-manual.
>  
> +        - const: xandespmu
> +          description:
> +            The Andes Technology performance monitor extension for counter overflow
> +            and privilege mode filtering. For more details, see Counter Related
> +            Registers in the AX45MP datasheet.
> +            https://www.andestech.com/wp-content/uploads/AX45MP-1C-Rev.-5.0.0-Datasheet.pdf

Does/will this PMU function identically on the other CPUs that support it?
I assume the answer is yes.

Cheers,
Conor.

> +
>          - const: xtheadpmu
>            description:
>              The T-Head performance monitor extension for counter overflow. For more
> -- 
> 2.34.1
> 

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