linux-kernel - Re: [PATCH v3 7/7] riscv: dts: starfive: Add StarFive JH7110 VisionFive 2 board device tree

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Message-ID: <CAJM55Z9M2xgNBRxG8cNefGt5hn4fbZmgHWzC2e8AfmKUq9Gw7A@mail.gmail.com>
Date:   Thu, 16 Feb 2023 11:32:31 +0100
From:   Emil Renner Berthing <emil.renner.berthing@...onical.com>
To:     Conor Dooley <conor.dooley@...rochip.com>
Cc:     Hal Feng <hal.feng@...rfivetech.com>,
        linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        Conor Dooley <conor@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Ben Dooks <ben.dooks@...ive.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 7/7] riscv: dts: starfive: Add StarFive JH7110
 VisionFive 2 board device tree

On Thu, 16 Feb 2023 at 11:09, Conor Dooley <conor.dooley@...rochip.com> wrote:
>
> On Thu, Feb 16, 2023 at 09:50:37AM +0000, Conor Dooley wrote:
> > On Thu, Feb 16, 2023 at 10:27:17AM +0100, Emil Renner Berthing wrote:
> > > On Wed, 15 Feb 2023 at 15:04, Hal Feng <hal.feng@...rfivetech.com> wrote:
> > > > On 2/14/2023 5:53 PM, Emil Renner Berthing wrote:
> > > > > On Tue, 20 Dec 2022 at 02:12, Hal Feng <hal.feng@...rfivetech.com> wrote:
> >
> > > > >> +       model = "StarFive VisionFive 2 VB";
> > > > >> +       compatible = "starfive,visionfive-2-vb", "starfive,jh7110";
> > > > >
> > > > > Hi Hal,
> > > > >
> > > > > I just want to double check, is "VisionFive 2 VA" / "visoinfive-2-va"
> > > > > and "VisionFive 2 VB" / "visionfive-2-vb" really what you want? I
> > > > > still think having these names match what is printed on the silkscreen
> > > > > makes it a lot easier for everybody. Even your own releases calls the
> > > > > boards "v1.2A" and "v1.3B":
> > > > > https://github.com/starfive-tech/VisionFive2/releases/
> > > > >
> > > > > So I'd suggest
> > > > > model = "StarFive VisionFive 2 v1.3B";
> > > > > compatible = "starfive,visionfive-2-v1.3b", "starfive,jh7110";
> > > > >
> > > > > I haven't seen these "VA" and "VB" anywhere else, so if you don't want
> > > > > the version numbers and can promise that there will be no incompatible
> > > > > future revisions of the boards then maybe just drop the "V". Eg.
> > > > > model = "StarFive VisionFive 2 B";
> > > > > compatible = "starfive,visionfive-2-b", "starfive,jh7110";
> > > >
> > > > The version A board has reached the end of life. As far as I know, the
> > > > version B board will not update also unless there are some important
> > > > requirements and StarFive decides to update. Furthermore, it's too late
> > > > to change the compatible as patch 1 was already accepted. Will it be
> > > > easier to read if I modify it as below?
> > > >
> > > >         model = "StarFive VisionFive 2 vB";
> > > >         compatible = "starfive,visionfive-2-vb", "starfive,jh7110";
> > >
> > > Oh, that's sad that the kernel will now end up calling the boards
> > > something that's used nowhere else, even by StarFive :/
> > > But yeah, I guess vA and vB are a little easier to read.
> >
> > Nothing has been released with that name so AFAIU we can change it
> > still. If you sort it out today/tomorrow I'll try get it to Arnd before
> > the merge window opens...
> >
> > I might've jumped the gun a bit here, I thought that it'd been changed
> > to what you (Emil) had suggested.

No, I'm sorry for being late here. The below definitely looks better to me.

Hal, would you be fine with this change?

/Emil

>
> -- >8 --
> From 4d44e8a83716d1caa314f25a95bd21ac8904909e Mon Sep 17 00:00:00 2001
> From: Conor Dooley <conor.dooley@...rochip.com>
> Date: Thu, 16 Feb 2023 09:58:22 +0000
> Subject: [PATCH] dt-bindings: riscv: correct starfive visionfive 2 compatibles
>
> Using "va" and "vb" doesn't match what's written on the board, or the
> communications from StarFive.
> Switching to using the silkscreened version number will ease confusion &
> the risk of another spin of the board containing a "conflicting" version
> identifier.
>
> Suggested-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>
> Fixes: 97b7ed072784 ("dt-bindings: riscv: Add StarFive JH7110 SoC and VisionFive 2 board")
> Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
>  Documentation/devicetree/bindings/riscv/starfive.yaml | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/riscv/starfive.yaml b/Documentation/devicetree/bindings/riscv/starfive.yaml
> index 60c7c03fcdce..cc4d92f0a1bf 100644
> --- a/Documentation/devicetree/bindings/riscv/starfive.yaml
> +++ b/Documentation/devicetree/bindings/riscv/starfive.yaml
> @@ -26,8 +26,8 @@ properties:
>
>        - items:
>            - enum:
> -              - starfive,visionfive-2-va
> -              - starfive,visionfive-2-vb
> +              - starfive,visionfive-2-v1.2a
> +              - starfive,visionfive-2-v1.3b
>            - const: starfive,jh7110
>
>  additionalProperties: true
> --
> 2.39.0
>
>