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Message-ID: <cover.1762170107.git.daniel@makrotopia.org>
Date: Mon, 3 Nov 2025 12:16:57 +0000
From: Daniel Golle <daniel@...rotopia.org>
To: 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>,
Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: 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: [PATCH net-next v7 00/12] net: dsa: lantiq_gswip: Add support for
MaxLinear GSW1xx switch family
This patch series extends the existing lantiq_gswip DSA driver to
support the MaxLinear GSW1xx family of dedicated Ethernet switch ICs.
These switches are based on the same IP as the Lantiq/Intel GSWIP found
in VR9 and xRX MIPS router SoCs which are currently supported by the
lantiq_gswip driver, but they are dedicated ICs connected via MDIO
rather than built-in components of a SoC accessible via memory-mapped
I/O.
The series includes several improvements and refactoring to implement
support for GSW1xx switch ICs by reusing the existing lantiq_gswip
driver.
The GSW1xx family includes several variants:
- GSW120: 4 ports, 2 PHYs, RGMII & SGMII/2500Base-X
- GSW125: 4 ports, 2 PHYs, RGMII & SGMII/2500Base-X, industrial temperature
- GSW140: 6 ports, 4 PHYs, RGMII & SGMII/2500Base-X
- GSW141: 6 ports, 4 PHYs, RGMII & SGMII
- GSW145: 6 ports, 4 PHYs, RGMII & SGMII/2500Base-X, industrial temperature
Key features implemented:
- MDIO-based register access using regmap
- Support for SGMII/1000Base-X/2500Base-X SerDes interfaces
- Configurable RGMII delays via device tree properties
- Configurable RMII clock direction
- Energy Efficient Ethernet (EEE) support
- enabling/disabling learning
---
Series history:
v7:
* improve cover letter
* complete documentation of series history, add lore links
* dt-bindings: put patternProperties: after properties: to follow
standardized order
* dt-bindings: drop the addition of 'reg-names' to the list of
required properties and also don't add it to the existing example
v6: https://lore.kernel.org/all/cover.1761938079.git.daniel@makrotopia.org/
* keep properties on top level and use allOf for
conditional constraints
* switch order of patches, move deviation from
dsa.yaml#/$defs/ethernet-ports to this patch which actually
needs it
v5: https://lore.kernel.org/all/cover.1761823194.git.daniel@makrotopia.org/
* dt-bindings: drop maxlinear,rx-inverted from example
v4: https://lore.kernel.org/all/cover.1761693288.git.daniel@makrotopia.org/
* break out PCS reset into dedicated function
* drop hacky support for reverse-SGMII
* remove again the custom properties for TX and RX inverted SerDes
PCS in favor of waiting for generic properties to land
* use __be16 to access tag fields
* define ETH_P_MXLGSW in if_ether.h
* drop *_SHIFT macros, get rid of _MASK suffix, use FIELD helpers
* print tag using %8ph
* drop maxlinear,rx-inverted and maxlinear,tx-inverted properties for
now in favor of upcoming generic properties
* rework to use legacy codepath as fallback for RGMII delays
* set GSWIP_MII_CFG_RMII_CLK bit in RMII case inside the switch
statement instead of a (wrong) if-clause just below
* keep previous behavior regarding GSWIP_TABLE_MAC_BRIDGE_VAL1_VALID
for GSWIP 2.1 and earlier, this has been clarified by MaxLinear
engineers
* remove misleading default delays
v3: https://lore.kernel.org/all/cover.1761521845.git.daniel@makrotopia.org/
* avoid disrupting link when calling .pcs_config()
* sort functions and phylink_pcs_ops instance in same order as
struct definition
* always set bootstrap override bits and add explanatory comment
* move definitions to separate header file
* add custom properties for TX and RX inverted data on the SerDes
interface
* dt-bindings: redefine ports node so properties which are defined
actually apply
* dt-bindings: describe RGMII port with 2ps delay as 'rgmii-id' in
example
v2: https://lore.kernel.org/all/cover.1761402873.git.daniel@makrotopia.org/
* removed left-overs of 4k VLAN support
* fix use of uninitialized variable
* remove git conflict left-overs which has somehow creeped into
dt-bindings
* indent dt-bindings example with 4 spaces instead of tabs
v1: https://lore.kernel.org/all/cover.1761324950.git.daniel@makrotopia.org/
* preparations have been merged in several separate series:
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f0a24b2547cfdd5ec85a131e386a2ce4ff9179cb
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=88224095b4e512b027289183f432c0e84925d648
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=764a47a639c73e8d941cbbb10696a0eb98d10d7b
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=1d8f0059091e757973324ae76253c2c059e0810f
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=6e8e6baf16ce7d2310959ae81d0194a56874e0d2
* comments received for the tag_max-gsw.c driver have been addressed
RFC: https://lore.kernel.org/all/aKDhFCNwjDDwRKsI@pidgin.makrotopia.org/
Daniel Golle (12):
net: dsa: lantiq_gswip: split into common and MMIO parts
net: dsa: lantiq_gswip: support enable/disable learning
net: dsa: lantiq_gswip: support Energy Efficient Ethernet
net: dsa: lantiq_gswip: set link parameters also for CPU port
net: dsa: lantiq_gswip: define and use
GSWIP_TABLE_MAC_BRIDGE_VAL1_VALID
dt-bindings: net: dsa: lantiq,gswip: add MaxLinear RMII refclk output
property
net: dsa: lantiq_gswip: add vendor property to setup MII refclk output
dt-bindings: net: dsa: lantiq,gswip: add support for MII delay
properties
net: dsa: lantiq_gswip: allow adjusting MII delays
dt-bindings: net: dsa: lantiq,gswip: add support for MaxLinear GSW1xx
switches
net: dsa: add tagging driver for MaxLinear GSW1xx switch family
net: dsa: add driver for MaxLinear GSW1xx switch family
.../bindings/net/dsa/lantiq,gswip.yaml | 164 +-
MAINTAINERS | 3 +-
drivers/net/dsa/lantiq/Kconfig | 18 +-
drivers/net/dsa/lantiq/Makefile | 2 +
drivers/net/dsa/lantiq/lantiq_gswip.c | 1617 +--------------
drivers/net/dsa/lantiq/lantiq_gswip.h | 20 +
drivers/net/dsa/lantiq/lantiq_gswip_common.c | 1737 +++++++++++++++++
drivers/net/dsa/lantiq/mxl-gsw1xx.c | 733 +++++++
drivers/net/dsa/lantiq/mxl-gsw1xx.h | 126 ++
drivers/net/dsa/lantiq/mxl-gsw1xx_pce.h | 154 ++
include/net/dsa.h | 2 +
include/uapi/linux/if_ether.h | 1 +
net/dsa/Kconfig | 8 +
net/dsa/Makefile | 1 +
net/dsa/tag_mxl-gsw1xx.c | 116 ++
15 files changed, 3101 insertions(+), 1601 deletions(-)
create mode 100644 drivers/net/dsa/lantiq/lantiq_gswip_common.c
create mode 100644 drivers/net/dsa/lantiq/mxl-gsw1xx.c
create mode 100644 drivers/net/dsa/lantiq/mxl-gsw1xx.h
create mode 100644 drivers/net/dsa/lantiq/mxl-gsw1xx_pce.h
create mode 100644 net/dsa/tag_mxl-gsw1xx.c
--
2.51.2
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