netdev - Re: [PATCH v3 5/9] riscv: dts: starfive: jh7100-common: Setup pinmux and enable gmac

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Date: Sat, 16 Dec 2023 11:38:53 -0800
From: Emil Renner Berthing <emil.renner.berthing@...onical.com>
To: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Emil Renner Berthing <kernel@...il.dk>, Samin Guo <samin.guo@...rfivetech.com>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Hal Feng <hal.feng@...rfivetech.com>, 
	Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, 
	Alexandre Torgue <alexandre.torgue@...s.st.com>, Jose Abreu <joabreu@...opsys.com>, 
	Maxime Coquelin <mcoquelin.stm32@...il.com>, Richard Cochran <richardcochran@...il.com>, 
	Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: netdev@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, 
	linux-clk@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
	linux-arm-kernel@...ts.infradead.org, kernel@...labora.com, 
	Emil Renner Berthing <emil.renner.berthing@...onical.com>
Subject: Re: [PATCH v3 5/9] riscv: dts: starfive: jh7100-common: Setup pinmux
 and enable gmac

Cristian Ciocaltea wrote:
> Add pinmux configuration for DWMAC found on the JH7100 based boards and
> enable the related DT node, providing a basic PHY configuration.
>
> Co-developed-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>
> Signed-off-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> ---
>  .../boot/dts/starfive/jh7100-common.dtsi      | 85 +++++++++++++++++++
>  1 file changed, 85 insertions(+)
>
> diff --git a/arch/riscv/boot/dts/starfive/jh7100-common.dtsi b/arch/riscv/boot/dts/starfive/jh7100-common.dtsi
> index 42fb61c36068..5cafe8f5c2e7 100644
> --- a/arch/riscv/boot/dts/starfive/jh7100-common.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7100-common.dtsi
> @@ -72,7 +72,92 @@ wifi_pwrseq: wifi-pwrseq {
>  	};
>  };
>
> +&gmac {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&gmac_pins>;
> +	phy-mode = "rgmii-id";
> +	phy-handle = <&phy>;

I'm not sure if it's a generic policy or not, but I don't really like adding a
reference to a non-existant node here. I'd move this property to the board
files where the phy node is actually defined.

/Emil