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From: Stefano Radaelli <stefano.radaelli21@gmail.com>
To: Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, pierluigi.p@variscite.com,
	matthias.p@variscite.com,
	Stefano Radaelli <stefano.r@variscite.com>,
	Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>
Subject: Re: [PATCH v2 1/4] arm64: dts: ti: var-som-am62p: fix Ethernet PHY configuration
Date: Mon, 13 Jul 2026 15:32:00 +0200	[thread overview]
Message-ID: <alTo0KGWAixkK0i8@Lord-Beerus.station> (raw)
In-Reply-To: <531d7396-c581-4b5d-8008-db5e9ee5e7d6@ti.com>

On Mon, Jul 13, 2026 at 04:02:34PM +0530, Vignesh Raghavendra wrote:
> >  
> >  &cpsw3g_mdio {
> > @@ -159,9 +169,9 @@ &cpsw3g_mdio {
> >  	cpsw3g_phy0: ethernet-phy@4 {
> >  		compatible = "ethernet-phy-id0283.bc30";
> >  		reg = <4>;
> > -		reset-gpios = <&main_gpio0 46 GPIO_ACTIVE_LOW>;
> > -		reset-assert-us = <10000>;
> > -		reset-deassert-us = <100000>;
> 
> So are the reset delays no longer required? Or they taken care of
> somewhere else?
> 
> > +		bootph-all;
> > +		enet-phy-lane-no-swap;
> > +		vdd-supply = <&reg_eth_phy_vdd>;
> >  	};
> >  };
> >  
> 
> -- 
> Regards
> Vignesh
> https://ti.com/opensource
> 

Hi Vignesh,

No, because this GPIO actually is not used as a PHY reset.

After reviewing the hardware, it turned out that this signal is a
board-level enable signal required for the PHY to operate, rather than
a reset line.
The previous reset-assert-us and reset-deassert-us values were
associated with the incorrect modelling of this GPIO as a reset, and
are not longer needed.

Thank you!

Best Regards,
Stefano


  reply	other threads:[~2026-07-13 13:32 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-28 20:56 [PATCH v2 0/4] arm64: dts: am62p5-var-som-symphony: align DTS with hardware revision Stefano Radaelli
2026-06-28 20:56 ` [PATCH v2 1/4] arm64: dts: ti: var-som-am62p: fix Ethernet PHY configuration Stefano Radaelli
2026-07-13 10:32   ` Vignesh Raghavendra
2026-07-13 13:32     ` Stefano Radaelli [this message]
2026-07-14  6:06       ` Vignesh Raghavendra
2026-06-28 20:56 ` [PATCH v2 2/4] arm64: dts: ti: var-som-am62p: update audio codec configuration Stefano Radaelli
2026-06-28 20:56 ` [PATCH v2 3/4] arm64: dts: am62p5-var-som-symphony: add touchscreen support Stefano Radaelli
2026-06-28 20:56 ` [PATCH v2 4/4] arm64: dts: am62p5-var-som-symphony: add TPM support Stefano Radaelli

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