[PATCH net-next RFC v4 0/4] riscv: dts: sophgo: Add ethernet support for cv18xx

[Inochi Amaoto <inochiama@gmail.com>]

Add device binding and dts for CV18XX series SoC, this dts change series
required the reset patch [1] for the dts, which is already taken.

[1] https://lore.kernel.org/all/20250617070144.1149926-1-inochiama@gmail.com

The patch is marked as RFC as it require reset dts.

Change from RFC v3:
- https://lore.kernel.org/all/20250626080056.325496-1-inochiama@gmail.com
1. patch 3: change internal phy id from 0 to 1

Change from RFC v2:
- https://lore.kernel.org/all/20250623003049.574821-1-inochiama@gmail.com
1. patch 1: fix wrong binding title
2. patch 3: fix unmatched mdio bus number
3. patch 4: remove setting phy-mode and phy-handle in board dts and move
	    them into patch 3.

Change from RFC v1:
- https://lore.kernel.org/all/20250611080709.1182183-1-inochiama@gmail.com
1. patch 3: switch to mdio-mux-mmioreg
2. patch 4: add configuration for Huashan Pi

Inochi Amaoto (4):
  dt-bindings: net: Add support for Sophgo CV1800 dwmac
  riscv: dts: sophgo: Add ethernet device for cv18xx
  riscv: dts: sophgo: Add mdio multiplexer device for cv18xx
  riscv: dts: sophgo: Enable ethernet device for Huashan Pi

 .../bindings/net/sophgo,cv1800b-dwmac.yaml    | 113 ++++++++++++++++++
 arch/riscv/boot/dts/sophgo/cv180x.dtsi        |  73 +++++++++++
 .../boot/dts/sophgo/cv1812h-huashan-pi.dts    |   8 ++
 3 files changed, 194 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/sophgo,cv1800b-dwmac.yaml

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2.50.0