linux-kernel - Re: [RFC PATCH 1/8] dt-bindings: phy: mediatek,xfi-pextp: add new bindings

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Message-ID: <20231114134427.GB1645963-robh@kernel.org>
Date:   Tue, 14 Nov 2023 07:44:27 -0600
From:   Rob Herring <robh@...nel.org>
To:     Daniel Golle <daniel@...rotopia.org>
Cc:     Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Alexander Couzens <lynxis@...0.eu>,
        Philipp Zabel <p.zabel@...gutronix.de>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-phy@...ts.infradead.org
Subject: Re: [RFC PATCH 1/8] dt-bindings: phy: mediatek,xfi-pextp: add new
 bindings

On Thu, Nov 09, 2023 at 11:11:02PM +0000, Daniel Golle wrote:
> Hi Andrew,
> 
> On Thu, Nov 09, 2023 at 10:55:55PM +0100, Andrew Lunn wrote:
> > > +  mediatek,usxgmii-performance-errata:
> > > +    $ref: /schemas/types.yaml#/definitions/flag
> > > +    description:
> > > +      USXGMII0 on MT7988 suffers from a performance problem in 10GBase-R
> > > +      mode which needs a work-around in the driver. The work-around is
> > > +      enabled using this flag.
> > 
> > Is there more details about this? I'm just wondering if this should be
> > based on the compatible, rather than a bool property.
> 
> The vendor sources where this is coming from are here:
> 
> https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/a500d94cd47e279015ce22947e1ce396a7516598%5E%21/#F0
> 
> And I'm afraid this is as much detail as it gets. And yes, we could
> also base this on the compatible and just have two different ones for
> the two PEXTP instances found in MT7988.
> Let me know your conclusion in that regard.

I'd go with a property in this case unless you think there may be other 
per instance differences.

Rob