netdev - Re: [PATCH net-next 13/13] net: dsa: add driver for MaxLinear GSW1xx switch family

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Message-ID: <aP03DEZMHOv0NQoj@shell.armlinux.org.uk>
Date: Sat, 25 Oct 2025 21:46:04 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Daniel Golle <daniel@...rotopia.org>
Cc: Hauke Mehrtens <hauke@...ke-m.de>, Andrew Lunn <andrew@...n.ch>,
	Vladimir Oltean <olteanv@...il.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@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Simon Horman <horms@...nel.org>,
	netdev@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Andreas Schirm <andreas.schirm@...mens.com>,
	Lukas Stockmann <lukas.stockmann@...mens.com>,
	Alexander Sverdlin <alexander.sverdlin@...mens.com>,
	Peter Christen <peter.christen@...mens.com>,
	Avinash Jayaraman <ajayaraman@...linear.com>,
	Bing tao Xu <bxu@...linear.com>, Liang Xu <lxu@...linear.com>,
	Juraj Povazanec <jpovazanec@...linear.com>,
	"Fanni (Fang-Yi) Chan" <fchan@...linear.com>,
	"Benny (Ying-Tsan) Weng" <yweng@...linear.com>,
	"Livia M. Rosu" <lrosu@...linear.com>,
	John Crispin <john@...ozen.org>
Subject: Re: [PATCH net-next 13/13] net: dsa: add driver for MaxLinear GSW1xx
 switch family

On Fri, Oct 24, 2025 at 06:05:00PM +0100, Daniel Golle wrote:
> Add driver for the MaxLinear GSW1xx family of Ethernet switch ICs which
> are based on the same IP as the Lantiq/Intel GSWIP found in the Lantiq VR9
> and Intel GRX MIPS router SoCs. The main difference is that instead of
> using memory-mapped I/O to communicate with the host CPU these ICs are
> connected via MDIO (or SPI, which isn't supported by this driver).
> Implement the regmap API to access the switch registers over MDIO to allow
> reusing lantiq_gswip_common for all core functionality.
> 
> The GSW1xx also comes with a SerDes port capable of 1000Base-X, SGMII and
> 2500Base-X, which can either be used to connect an external PHY or SFP
> cage, or as the CPU port. Support for the SerDes interface is implemented
> in this driver using the phylink_pcs interface.
> 
> Signed-off-by: Daniel Golle <daniel@...rotopia.org>

Not sure what version I reviewed, but please see that other version for
my review comments on this patch.

Thanks.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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