linux-kernel - Re: [PATCH v3 03/13] riscv: dts: allwinner: Add xtheadvector to the D1/D1s devicetree

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Message-ID: <0cc13581-5cc4-4a25-a943-7a896f42da4c@sifive.com>
Date: Mon, 1 Jul 2024 10:27:01 -0500
From: Samuel Holland <samuel.holland@...ive.com>
To: Charlie Jenkins <charlie@...osinc.com>
Cc: linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-sunxi@...ts.linux.dev,
 linux-doc@...r.kernel.org, linux-kselftest@...r.kernel.org,
 Conor Dooley <conor.dooley@...rochip.com>, Conor Dooley <conor@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt
 <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Jisheng Zhang <jszhang@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
 Jernej Skrabec <jernej.skrabec@...il.com>,
 Samuel Holland <samuel@...lland.org>, Jonathan Corbet <corbet@....net>,
 Shuah Khan <shuah@...nel.org>, Guo Ren <guoren@...nel.org>,
 Evan Green <evan@...osinc.com>, Andy Chiu <andy.chiu@...ive.com>,
 Jessica Clarke <jrtc27@...c27.com>
Subject: Re: [PATCH v3 03/13] riscv: dts: allwinner: Add xtheadvector to the
 D1/D1s devicetree

Hi Charlie,

On 2024-06-19 6:57 PM, Charlie Jenkins wrote:
> The D1/D1s SoCs support xtheadvector so it can be included in the
> devicetree. Also include vlenb for the cpu.
> 
> Signed-off-by: Charlie Jenkins <charlie@...osinc.com>
> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
>  arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 3 ++-

The other C906/C910/C920-based SoCs need devicetree updates as well, although
they don't necessarily need to be part of this series:

 - sophgo/cv18xx.dtsi
 - sophgo/sg2042-cpus.dtsi
 - thead/th1520.dtsi

>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
> index 64c3c2e6cbe0..6367112e614a 100644
> --- a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
> +++ b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
> @@ -27,7 +27,8 @@ cpu0: cpu@0 {
>  			riscv,isa = "rv64imafdc";

The ISA string should be updated to keep it in sync with riscv,isa-extensions.

Regards,
Samuel

>  			riscv,isa-base = "rv64i";
>  			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
> -					       "zifencei", "zihpm";
> +					       "zifencei", "zihpm", "xtheadvector";
> +			thead,vlenb = <128>;
>  			#cooling-cells = <2>;
>  
>  			cpu0_intc: interrupt-controller {
>