linux-kernel - Re: [PATCH RESEND net-next v5 1/2] dt-bindings: net: qca,ar803x: Add IPQ5018 Internal GE PHY support

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Message-ID: <26v6yklme3bbw3h4eze4z27cgr67ovymee5mc6nay23zt4xfcv@37sus6dp3g7x>
Date: Mon, 23 Jun 2025 08:34:26 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: George Moussalem <george.moussalem@...look.com>
Cc: Bjorn Andersson <andersson@...nel.org>, 
	Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Andrew Lunn <andrew@...n.ch>, 
	Heiner Kallweit <hkallweit1@...il.com>, Russell King <linux@...linux.org.uk>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Florian Fainelli <f.fainelli@...il.com>, Philipp Zabel <p.zabel@...gutronix.de>, 
	Konrad Dybcio <konradybcio@...nel.org>, linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH RESEND net-next v5 1/2] dt-bindings: net: qca,ar803x: Add
 IPQ5018 Internal GE PHY support

On Fri, Jun 13, 2025 at 05:55:07AM +0400, George Moussalem wrote:
> Document the IPQ5018 Internal Gigabit Ethernet PHY found in the IPQ5018
> SoC. Its output pins provide an MDI interface to either an external
> switch in a PHY to PHY link scenario or is directly attached to an RJ45
> connector.
> 
> The PHY supports 10/100/1000 mbps link modes, CDT, auto-negotiation and
> 802.3az EEE.
> 
> For operation, the LDO controller found in the IPQ5018 SoC for which
> there is provision in the mdio-4019 driver.
> 
> Two common archictures across IPQ5018 boards are:
> 1. IPQ5018 PHY --> MDI --> RJ45 connector
> 2. IPQ5018 PHY --> MDI --> External PHY
> In a phy to phy architecture, the DAC needs to be configured to
> accommodate for the short cable length. As such, add an optional boolean
> property so the driver sets preset DAC register values accordingly.
> 
> Signed-off-by: George Moussalem <george.moussalem@...look.com>
> ---
>  .../devicetree/bindings/net/qca,ar803x.yaml        | 43 ++++++++++++++++++++++
>  1 file changed, 43 insertions(+)

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof