linux-kernel - Re: [PATCH v1] dt-bindings: riscv: explicitly mention assumption of Zicsr & Zifencei support

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Message-Id: <168298679765.11596.12636857720303602067.b4-ty@rivosinc.com>
Date:   Mon, 01 May 2023 17:19:57 -0700
From:   Palmer Dabbelt <palmer@...osinc.com>
To:     Palmer Dabbelt <palmer@...belt.com>,
        Conor Dooley <conor.dooley@...rochip.com>
Cc:     Conor Dooley <conor@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] dt-bindings: riscv: explicitly mention assumption
 of Zicsr & Zifencei support


On Thu, 27 Apr 2023 11:43:42 +0100, Conor Dooley wrote:
> The dt-binding was defined before the extraction of csr access and
> fence.i into their own extensions, and thus the presence of the I
> base extension implies Zicsr and Zifencei.
> There's no harm in adding them obviously, but for backwards
> compatibility with DTs that existed prior to that extraction, software
> is unable to differentiate between "i" and "i_zicsr_zifencei" without
> any further information.
> 
> [...]

Applied, thanks!

[1/1] dt-bindings: riscv: explicitly mention assumption of Zicsr & Zifencei support
      https://git.kernel.org/palmer/c/41ebfc91f785

Best regards,
-- 
Palmer Dabbelt <palmer@...osinc.com>