linux-kernel - Re: [PATCH v2 03/17] dt-bindings: riscv: Add vendorid

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Date: Tue, 16 Apr 2024 16:05:26 +0100
From: Conor Dooley <conor@...nel.org>
To: Charlie Jenkins <charlie@...osinc.com>
Cc: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Guo Ren <guoren@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Evan Green <evan@...osinc.com>,
	Clément Léger <cleger@...osinc.com>,
	Jonathan Corbet <corbet@....net>, Shuah Khan <shuah@...nel.org>,
	linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, Palmer Dabbelt <palmer@...osinc.com>,
	linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
	linux-doc@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH v2 03/17] dt-bindings: riscv: Add vendorid

On Mon, Apr 15, 2024 at 09:12:00PM -0700, Charlie Jenkins wrote:
> vendorid are required during DT parsing to determine known hardware
> capabilities. This parsing happens before the whole system has booted,
> so only the boot hart is online and able to report the value of its
> vendorid.
> 
> Signed-off-by: Charlie Jenkins <charlie@...osinc.com>

If we are gonna add these, I think we may as well add all 3. I'd also
tie them together, so that either you have none or all 3.

Cheers,
Conor.

> ---
>  Documentation/devicetree/bindings/riscv/cpus.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
> index d87dd50f1a4b..030c7697d3b7 100644
> --- a/Documentation/devicetree/bindings/riscv/cpus.yaml
> +++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
> @@ -94,6 +94,11 @@ properties:
>      description:
>        The blocksize in bytes for the Zicboz cache operations.
>  
> +  riscv,vendorid:
> +    $ref: /schemas/types.yaml#/definitions/uint64
> +    description:
> +      Same value as the mvendorid CSR.
> +
>    # RISC-V has multiple properties for cache op block sizes as the sizes
>    # differ between individual CBO extensions
>    cache-op-block-size: false
> 
> -- 
> 2.44.0
> 

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