Merge branch 'add-dwmac-glue-driver-for-motorcomm-yt6801'

Yao Zi says:

====================
Add DWMAC glue driver for Motorcomm YT6801

This series adds glue driver for Motorcomm YT6801 PCIe ethernet
controller, which is considered mostly compatible with DWMAC-4 IP by
inspecting the register layout[1]. It integrates a Motorcomm YT8531S PHY
(confirmed by reading PHY ID) and GMII is used to connect the PHY to
MAC[2].

The initialization logic of the MAC is mostly based on previous upstream
effort for the controller[3] and the Deepin-maintained downstream Linux
driver[4] licensed under GPL-2.0 according to its SPDX headers. However,
this series is a completely re-write of the previous patch series,
utilizing the existing DWMAC4 driver and introducing a glue driver only.

This series only aims to add basic networking functions for the
controller, features like WoL, RSS and LED control are omitted for now.
Testing is done on i3-4170, it reaches 939Mbps (TX)/933Mbps (RX) on
average,

YT6801 TX

Connecting to host 192.168.114.51, port 5201
[  5] local 192.168.114.50 port 52986 connected to 192.168.114.51 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   112 MBytes   938 Mbits/sec    0    950 KBytes
[  5]   1.00-2.00   sec   113 MBytes   949 Mbits/sec    0   1.08 MBytes
[  5]   2.00-3.00   sec   112 MBytes   938 Mbits/sec    0   1.08 MBytes
[  5]   3.00-4.00   sec   111 MBytes   932 Mbits/sec    0   1.13 MBytes
[  5]   4.00-5.00   sec   113 MBytes   945 Mbits/sec    0   1.13 MBytes
[  5]   5.00-6.00   sec   112 MBytes   936 Mbits/sec    0   1.13 MBytes
[  5]   6.00-7.00   sec   112 MBytes   942 Mbits/sec    0   1.19 MBytes
[  5]   7.00-8.00   sec   112 MBytes   935 Mbits/sec    0   1.19 MBytes
[  5]   8.00-9.00   sec   113 MBytes   948 Mbits/sec    0   1.19 MBytes
[  5]   9.00-10.00  sec   111 MBytes   931 Mbits/sec    0   1.19 MBytes

YT6801 RX

Connecting to host 192.168.114.50, port 5201
[  5] local 192.168.114.51 port 41578 connected to 192.168.114.50 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   113 MBytes   944 Mbits/sec    0    542 KBytes
[  5]   1.00-2.00   sec   111 MBytes   934 Mbits/sec    0    850 KBytes
[  5]   2.00-3.00   sec   111 MBytes   933 Mbits/sec    0   1.01 MBytes
[  5]   3.00-4.00   sec   112 MBytes   943 Mbits/sec    0   1.01 MBytes
[  5]   4.00-5.00   sec   111 MBytes   932 Mbits/sec    0   1.01 MBytes
[  5]   5.00-6.00   sec   111 MBytes   929 Mbits/sec    0   1.01 MBytes
[  5]   6.00-7.00   sec   112 MBytes   937 Mbits/sec    0   1.01 MBytes
[  5]   7.00-8.00   sec   112 MBytes   941 Mbits/sec    0   1.01 MBytes
[  5]   8.00-9.00   sec   111 MBytes   929 Mbits/sec    0   1.01 MBytes
[  5]   9.00-10.00  sec   111 MBytes   932 Mbits/sec    0   1.01 MBytes
====================

Link: https://patch.msgid.link/20260109093445.46791-2-me@ziyao.cc
Signed-off-by: Jakub Kicinski <kuba@kernel.org>