[PATCH 0/3] net: add SpacemiT K1 EMAC support

[Zixian Zeng <sycamoremoon376@gmail.com>]

This series adds support for the Ethernet MACs integrated in
the SpacemiT K1 SoC, which includes adding a k1_emac driver with
MDIO and PHYLIB support for RGMII and RMII operation, enabling it
in the k1 defconfig, and adding MAINTAINERS coverage on new directory.

The k1_emac driver in series draws upon Vivian Wang's work [1]. To make it
simple and working, driver which using small ring-buffers operates primarily
on polling and only implements basic functions.

Tested on both Banana Pi F3 Ethernet ports with RTL8211F PHYs
at 1000 Mbps full duplex, and tested command: dhcp, ping, tftp, etc.

[1]: https://lore.kernel.org/all/20250914-net-k1-emac-v12-0-65b31b398f44@iscas.ac.cn/

Signed-off-by: Zixian Zeng <sycamoremoon376@gmail.com>
---
Zixian Zeng (3):
      net: k1: add Ethernet MAC driver
      configs: k1: enable Ethernet support
      MAINTAINERS: spacemit: add K1 Ethernet driver

 board/spacemit/k1/MAINTAINERS  |   1 +
 configs/spacemit_k1_defconfig  |   6 +
 drivers/net/Kconfig            |   1 +
 drivers/net/Makefile           |   1 +
 drivers/net/spacemit/Kconfig   |  15 +
 drivers/net/spacemit/Makefile  |   3 +
 drivers/net/spacemit/k1_emac.c | 952 +++++++++++++++++++++++++++++++++++++++++
 7 files changed, 979 insertions(+)
---
base-commit: a000f2af240eaa996cec92f8d44bad96fdf3f898
change-id: 20260926-b4-k1-emac-fa5f2b146f38

Best regards,
--  
Zixian Zeng <sycamoremoon376@gmail.com>