linux-kernel - Re: [PATCH 4/5] arm64: dts: allwinner: a527: add EMAC0 to Radxa A5E board

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Message-ID: <20250425074621-GYC50408@gentoo>
Date: Fri, 25 Apr 2025 07:46:21 +0000
From: Yixun Lan <dlan@...too.org>
To: Chukun Pan <amadeus@....edu.cn>
Cc: andre.przywara@....com, andrew+netdev@...n.ch, conor+dt@...nel.org,
	davem@...emloft.net, devicetree@...r.kernel.org,
	edumazet@...gle.com, jernej.skrabec@...il.com, krzk+dt@...nel.org,
	kuba@...nel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-sunxi@...ts.linux.dev,
	mripard@...nel.org, netdev@...r.kernel.org, pabeni@...hat.com,
	robh@...nel.org, samuel@...lland.org, wens@...e.org
Subject: Re: [PATCH 4/5] arm64: dts: allwinner: a527: add EMAC0 to Radxa A5E
 board

Hi Chukun,

On 11:30 Fri 25 Apr     , Chukun Pan wrote:
> Hi,
> 
> > On Radxa A5E board, the EMAC0 connect to an external YT8531C PHY,
> > which features a 25MHz crystal, and using PH8 pin as PHY reset.
> > 
> > Tested on A5E board with schematic V1.20.
> 
> Although the schematic says it is YT8531C, the PHY on the V1.20 board
> is Maxio MAE0621A. The article of cnx-software also mentioned this:
> https://www.cnx-software.com/2025/01/04/radxa-cubie-a5e-allwinner-a527-t527-sbc-with-hdmi-2-0-dual-gbe-wifi-6-bluetooth-5-4/
> 
IMO, then the schematic should be updated, I could definitely adjust
the commit message to reflect this change, but don't know if further
action need to take, like writing a new phy driver, I guess a fallback
to generic phy just works?
(google says, the MAE0621A is a pin-to-pin chip to RTL8211F..)

-- 
Yixun Lan (dlan)