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Date: Wed, 3 Apr 2024 09:56:39 +0000
From: ChunHau Tan <chunhau.tan@...rfivetech.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org>
CC: "David S . Miller" <davem@...emloft.net>, Eric Dumazet
<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
<pabeni@...hat.com>, Emil Renner Berthing <kernel@...il.dk>, Krzysztof
Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley
<conor+dt@...nel.org>, Maxime Coquelin <mcoquelin.stm32@...il.com>, Alexandre
Torgue <alexandre.torgue@...s.st.com>, Simon Horman <horms@...nel.org>,
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, Andrew Halaney
<ahalaney@...hat.com>, Jisheng Zhang <jszhang@...nel.org>,
Uwe Kleine-König <u.kleine-koenig@...gutronix.de>, Russell
King <rmk+kernel@...linux.org.uk>, Leyfoon Tan
<leyfoon.tan@...rfivetech.com>, JeeHeng Sia <jeeheng.sia@...rfivetech.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-stm32@...md-mailman.stormreply.com"
<linux-stm32@...md-mailman.stormreply.com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>, "linux-riscv@...ts.infradead.org"
<linux-riscv@...ts.infradead.org>
Subject: RE: [PATCH v5 1/1] dt-bindings: net: starfive,jh7110-dwmac: Add
StarFive JH8100 support
> -----Original Message-----
> From: Rob Herring <robh@...nel.org>
> Sent: Friday, 29 March, 2024 4:42 AM
> To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Cc: ChunHau Tan <chunhau.tan@...rfivetech.com>; David S . Miller
> <davem@...emloft.net>; Eric Dumazet <edumazet@...gle.com>; Jakub
> Kicinski <kuba@...nel.org>; Paolo Abeni <pabeni@...hat.com>; Emil Renner
> Berthing <kernel@...il.dk>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@...aro.org>; Conor Dooley <conor+dt@...nel.org>;
> Maxime Coquelin <mcoquelin.stm32@...il.com>; Alexandre Torgue
> <alexandre.torgue@...s.st.com>; Simon Horman <horms@...nel.org>; Bartosz
> Golaszewski <bartosz.golaszewski@...aro.org>; Andrew Halaney
> <ahalaney@...hat.com>; Jisheng Zhang <jszhang@...nel.org>; Uwe
> Kleine-König <u.kleine-koenig@...gutronix.de>; Russell King
> <rmk+kernel@...linux.org.uk>; Leyfoon Tan <leyfoon.tan@...rfivetech.com>;
> JeeHeng Sia <jeeheng.sia@...rfivetech.com>; netdev@...r.kernel.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org;
> linux-stm32@...md-mailman.stormreply.com;
> linux-arm-kernel@...ts.infradead.org; linux-riscv@...ts.infradead.org
> Subject: Re: [PATCH v5 1/1] dt-bindings: net: starfive,jh7110-dwmac: Add
> StarFive JH8100 support
>
> On Wed, Mar 27, 2024 at 08:54:30AM +0100, Krzysztof Kozlowski wrote:
> > On 27/03/2024 02:57, Tan Chun Hau wrote:
> > > Add StarFive JH8100 dwmac support.
> > > The JH8100 dwmac shares the same driver code as the JH7110 dwmac and
> > > has only one reset signal.
> > >
> > > Please refer to below:
> > >
> > > JH8100: reset-names = "stmmaceth";
> > > JH7110: reset-names = "stmmaceth", "ahb";
> > > JH7100: reset-names = "ahb";
> > >
> > > Example usage of JH8100 in the device tree:
> > >
> > > gmac0: ethernet@...30000 {
> > > compatible = "starfive,jh8100-dwmac",
> > > "starfive,jh7110-dwmac",
> > > "snps,dwmac-5.20";
> > > ...
> > > };
> > >
> > > Signed-off-by: Tan Chun Hau <chunhau.tan@...rfivetech.com>
> > > ---
> > > .../devicetree/bindings/net/snps,dwmac.yaml | 1 +
> > > .../bindings/net/starfive,jh7110-dwmac.yaml | 29 +++++++++++++++----
> > > 2 files changed, 25 insertions(+), 5 deletions(-)
> > >
> > > diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > > b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > > index 6b0341a8e0ea..a6d596b7dcf4 100644
> > > --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > > +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > > @@ -97,6 +97,7 @@ properties:
> > > - snps,dwxgmac-2.10
> > > - starfive,jh7100-dwmac
> > > - starfive,jh7110-dwmac
> > > + - starfive,jh8100-dwmac
> >
> > I think that's not needed. You have there already your fallback.
Okay, I will remove it.
> >
> > >
> > > reg:
> > > minItems: 1
> > > diff --git
> > > a/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
> > > b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
> > > index 0d1962980f57..5805a58c55d1 100644
> > > ---
> > > a/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml
> > > +++ b/Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.ya
> > > +++ ml
> > > @@ -18,6 +18,7 @@ select:
> > > enum:
> > > - starfive,jh7100-dwmac
> > > - starfive,jh7110-dwmac
> > > + - starfive,jh8100-dwmac
> >
> > Same here, even more obvious.
>
> Agreed.
Okay, I will remove it.
>
> >
> > > required:
> > > - compatible
> > >
> > > @@ -30,6 +31,10 @@ properties:
> > > - items:
> > > - const: starfive,jh7110-dwmac
> > > - const: snps,dwmac-5.20
> > > + - items:
> > > + - const: starfive,jh8100-dwmac
> > > + - const: starfive,jh7110-dwmac
> > > + - const: snps,dwmac-5.20
> > >
> > > reg:
> > > maxItems: 1
> > > @@ -116,11 +121,25 @@ allOf:
> > > minItems: 3
> > > maxItems: 3
> > >
> > > - resets:
> > > - minItems: 2
> > > -
> > > - reset-names:
> > > - minItems: 2
> > > + if:
> >
> > I would personally avoid nesting if within if. It gets unreadable.
> > Although Rob did not comment on this one, so I guess it is fine.
>
> I normally agree, but here I suggested it as it looked to be the simplest option.
>
> With the 2 other comments addressed,
>
> Reviewed-by: Rob Herring <robh@...nel.org>
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