linux-toradex.git/drivers/net/ethernet/stmicro/stmmac/Kconfig, branch master

stmmac: cleanup dead dependencies on STMMAC_PLATFORM and STMMAC_ETH in Kconfig

2026-04-03T21:37:31+00:00

There are already 'if STMMAC_ETH' and 'STMMAC_PLATFORM'
conditions wrapping these config options, making the
'depends on' statements duplicate dependencies (dead code).

I propose leaving the outer 'if STMMAC_PLATFORM...endif' and
'if STMMAC_ETH...endif' conditions, and removing the
individual 'depends on' statements.

This dead code was found by kconfirm, a static analysis tool for Kconfig.

Signed-off-by: Julian Braha 
Reviewed-by: Russell King (Oracle) 
Link: https://patch.msgid.link/20260402145858.240231-1-julianbraha@gmail.com
Signed-off-by: Jakub Kicinski

net: stmmac: dwmac-nuvoton: Add dwmac glue for Nuvoton MA35 family

2026-03-27T01:15:39+00:00

Add support for Gigabit Ethernet on Nuvoton MA35 series using dwmac driver.

Reviewed-by: Andrew Lunn 
Signed-off-by: Joey Lu 
Link: https://patch.msgid.link/20260323101756.81849-4-a0987203069@gmail.com
Signed-off-by: Jakub Kicinski

net: stmmac: Add glue layer for Spacemit K3 SoC

2026-03-18T03:18:38+00:00

The ethernet controller on Spacemit K3 SoC is Synopsys DesignWare
MAC (version 5.40a), with the following special points:
1. The rate of the tx clock line is auto changed when the mac speed
   rate is changed, and no need for changing the input tx clock.
2. This controller require a extra syscon device to configure the
   interface type, enable wake up interrupt and delay configuration
   if needed.

Add Spacemit dwmac driver support on the Spacemit K3 SoC.

Signed-off-by: Inochi Amaoto 
Reviewed-by: Russell King (Oracle) 
Link: https://patch.msgid.link/20260316010041.164360-4-inochiama@gmail.com
Signed-off-by: Jakub Kicinski

net: stmmac: Add glue driver for Motorcomm YT6801 ethernet controller

2026-01-13T03:20:56+00:00

Motorcomm YT6801 is a PCIe ethernet controller based on DWMAC4 IP. It
integrates an GbE phy, supporting WOL, VLAN tagging and various types
of offloading. It ships an on-chip eFuse for storing various vendor
configuration, including MAC address.

This patch adds basic glue code for the controller, allowing it to be
set up and transmit data at a reasonable speed. Features like WOL could
be implemented in the future.

Signed-off-by: Yao Zi 
Tested-by: Mingcong Bai 
Tested-by: Runhua He 
Tested-by: Xi Ruoyao 
Reviewed-by: Sai Krishna 
Link: https://patch.msgid.link/20260109093445.46791-4-me@ziyao.cc
Signed-off-by: Jakub Kicinski

net: stmmac: pci: Use generic PCI suspend/resume routines

2025-11-27T01:07:42+00:00

Convert STMMAC PCI glue driver to use the generic platform
suspend/resume routines for PCI controllers, instead of implementing its
own one.

Signed-off-by: Yao Zi 
Reviewed-by: Russell King (Oracle) 
Reviewed-by: Yanteng Si 
Link: https://patch.msgid.link/20251124160417.51514-4-ziyao@disroot.org
Signed-off-by: Jakub Kicinski

net: stmmac: loongson: Use generic PCI suspend/resume routines

2025-11-27T01:07:42+00:00

Convert glue driver for Loongson DWMAC controller to use the generic
platform suspend/resume routines for PCI controllers, instead of
implementing its own one.

Signed-off-by: Yao Zi 
Reviewed-by: Russell King (Oracle) 
Acked-by: Yanteng Si 
Link: https://patch.msgid.link/20251124160417.51514-3-ziyao@disroot.org
Signed-off-by: Jakub Kicinski

net: stmmac: Add generic suspend/resume helper for PCI-based controllers

2025-11-27T01:07:38+00:00

Most glue driver for PCI-based DWMAC controllers utilize similar
platform suspend/resume routines. Add a generic implementation to reduce
duplicated code.

Signed-off-by: Yao Zi 
Reviewed-by: Russell King (Oracle) 
Reviewed-by: Yanteng Si 
Link: https://patch.msgid.link/20251124160417.51514-2-ziyao@disroot.org
Signed-off-by: Jakub Kicinski

net: stmmac: Add a devlink attribute to control timestamping mode

2025-10-28T14:34:35+00:00

The DWMAC1000 supports 2 timestamping configurations to configure how
frequency adjustments are made to the ptp_clock, as well as the reported
timestamp values.

There was a previous attempt at upstreaming support for configuring this
mode by Olivier Dautricourt and Julien Beraud a few years back [1]

In a nutshell, the timestamping can be either set in fine mode or in
coarse mode.

In fine mode, which is the default, we use the overflow of an accumulator to
trigger frequency adjustments, but by doing so we lose precision on the
timetamps that are produced by the timestamping unit. The main drawback
is that the sub-second increment value, used to generate timestamps, can't be
set to lower than (2 / ptp_clock_freq).

The "fine" qualification comes from the frequent frequency adjustments we are
able to do, which is perfect for a PTP follower usecase.

In Coarse mode, we don't do frequency adjustments based on an
accumulator overflow. We can therefore have very fine subsecond
increment values, allowing for better timestamping precision. However
this mode works best when the ptp clock frequency is adjusted based on
an external signal, such as a PPS input produced by a GPS clock. This
mode is therefore perfect for a Grand-master usecase.

Introduce a driver-specific devlink parameter "ts_coarse" to enable or
disable coarse mode, keeping the "fine" mode as a default.

This can then be changed with:

devlink dev param set name ts_coarse value true cmode runtime

The associated documentation is also added.

[1] : https://lore.kernel.org/netdev/20200514102808.31163-1-olivier.dautricourt@orolia.com/

Signed-off-by: Maxime Chevallier
Reviewed-by: Russell King (Oracle)
Reviewed-by: Kory Maincent
Link: https://patch.msgid.link/20251024070720.71174-3-maxime.chevallier@bootlin.com
Signed-off-by: Paolo Abeni

net: stmmac: add Eswin EIC7700 glue driver

2025-10-16T23:07:23+00:00

Add Ethernet controller support for Eswin's eic7700 SoC. The driver
implements hardware initialization, clock configuration, delay
adjustment functions based on DWC Ethernet controller, and supports
device tree configuration and platform driver integration.

Signed-off-by: Zhi Li 
Signed-off-by: Shangjuan Wei 
Reviewed-by: Andrew Lunn 
Link: https://patch.msgid.link/20251015114101.1218-1-weishangjuan@eswincomputing.com
Signed-off-by: Jakub Kicinski

net: stmmac: Add support for Allwinner A523 GMAC200

2025-10-01T08:01:34+00:00

The Allwinner A523 SoC family has a second Ethernet controller, called
the GMAC200 in the BSP and T527 datasheet, and referred to as GMAC1 for
numbering. This controller, according to BSP sources, is fully
compatible with a slightly newer version of the Synopsys DWMAC core.
The glue layer around the controller is the same as found around older
DWMAC cores on Allwinner SoCs. The only slight difference is that since
this is the second controller on the SoC, the register for the clock
delay controls is at a different offset. Last, the integration includes
a dedicated clock gate for the memory bus and the whole thing is put in
a separately controllable power domain.

Add a new driver for this hardware supporting the integration layer.

Reviewed-by: Jernej Skrabec 
Signed-off-by: Chen-Yu Tsai 
Reviewed-by: Russell King (Oracle) 
Link: https://patch.msgid.link/20250925191600.3306595-3-wens@kernel.org
Signed-off-by: Paolo Abeni