linux-kernel - Re: [PATCH net-next v4 00/14] yt6801: Add Motorcomm yt6801 PCIe driver

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Message-ID: <da434f13-fb08-4036-96ed-7de579cb9ddc@motor-comm.com>
Date: Fri, 11 Apr 2025 17:50:55 +0800
From: Frank Sae <Frank.Sae@...or-comm.com>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
 "David S . Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, netdev@...r.kernel.org,
 Masahiro Yamada <masahiroy@...nel.org>, Parthiban.Veerasooran@...rochip.com,
 linux-kernel@...r.kernel.org,
 "andrew+netdev @ lunn . ch" <andrew+netdev@...n.ch>, lee@...ger.us,
 horms@...nel.org, linux-doc@...r.kernel.org, corbet@....net,
 geert+renesas@...der.be, xiaogang.fan@...or-comm.com,
 fei.zhang@...or-comm.com, hua.sun@...or-comm.com
Subject: Re: [PATCH net-next v4 00/14] yt6801: Add Motorcomm yt6801 PCIe
 driver

On 2025/4/8 18:30, Russell King (Oracle) wrote:
> On Tue, Apr 08, 2025 at 05:28:21PM +0800, Frank Sae wrote:
>> This series includes adding Motorcomm YT6801 Gigabit ethernet driver
>>  and adding yt6801 ethernet driver entry in MAINTAINERS file.
>> YT6801 integrates a YT8531S phy.
> 
> What is different between this and the Designware GMAC4 core supported
> by drivers/net/ethernet/stmicro/stmmac/ ?
> 

We support more features: NS, RSS, wpi, wol pattern and aspm control.

> Looking at the register layout, it looks very similar. The layout of the
> MAC control register looks similar. The RX queue and PMT registers are
> at the same relative offset. The MDIO registers as well.
> 
> Can you re-use the stmmac driver?
> 

I can not re-use the stmmac driver, because pcie and ephy can not work well on
the stmmac driver.