linux-kernel - Re: [PATCH v2 5/5] dt-bindings: riscv: document vector crypto requirements

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Message-ID: <Z4r73Iq5IWM8Z633@ghost>
Date: Fri, 17 Jan 2025 16:54:52 -0800
From: Charlie Jenkins <charlie@...osinc.com>
To: Conor Dooley <conor@...nel.org>
Cc: Eric Biggers <ebiggers@...nel.org>, linux-riscv@...ts.infradead.org,
	Conor Dooley <conor.dooley@...rochip.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Clément Léger <cleger@...osinc.com>,
	Andy Chiu <andybnac@...il.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v2 5/5] dt-bindings: riscv: document vector crypto
 requirements

On Fri, Oct 25, 2024 at 05:53:49PM +0100, Conor Dooley wrote:
> On Thu, Oct 24, 2024 at 07:42:24PM -0700, Eric Biggers wrote:
> > On Thu, Oct 24, 2024 at 07:24:11PM -0700, Eric Biggers wrote:
> > > On Thu, Oct 24, 2024 at 01:34:33PM +0100, Conor Dooley wrote:
> > > > From: Conor Dooley <conor.dooley@...rochip.com>
> > > > 
> > > > Section 35.2. Extensions Overview of [1] says:
> > > > | The Zvknhb and Zvbc Vector Crypto Extensions --and accordingly the composite extensions Zvkn and
> > > > | Zvks-- (sic) require a Zve64x base, or application ("V") base Vector Extension.
> > > > | All of the other Vector Crypto Extensions can be built on any embedded (Zve*) or application ("V") base
> > > > | Vector Extension
> > > > 
> > > > Apply these rules in the binding, so that invalid combinations can be
> > > > avoided.
> > > 
> > > It looks like that part of the spec is wrong, though.  The Zvknhb and Zvbc are
> > > correct, but the list of the composite extensions that at least one of them is
> > > included in is: Zvkn, Zvknc, Zvkng, Zvksc.
> > > 
> > 
> > I am attempting to fix this in
> > https://github.com/riscv/riscv-isa-manual/pull/1697
> 
> Looks like at least one person agrees with you, but I'll wait til that's
> merged before submitting another version. Thanks for reporting it.

It's been merged now :)

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