[PATCH v4 0/3] riscv: sophgo: milkv_duo: add support for Milk-V Duo board

[Kongyang Liu]

The Milk-V Duo board is built upon Sophgo's CV1800B SoC, featuring two
XuanTie C906 CPUs running at 1.0GHz and 700MHz, respectively.

This series introduces fundamental support for the Milk-V Duo board,
encompassing UART, CPU, and PLIC support. This ensures that U-Boot can
operate in serial console mode.

Changes in v4:
- Sync dts files with Linux kernel

Changes in v3:
- Swap patch 1 and 2 duo to dependency of defconfig and device tree
- Enable EFI loader
- Add brief description of the procedure to run u-boot-dtb.bin

Changes in v2:
- Fold the defconfig patch to first patch
- Remove unnecessary environment settings of consoledev and baudrate in
  config

Kongyang Liu (3):
  riscv: dts: sophgo: add basic device tree for Milk-V Duo board
  riscv: sophgo: milkv_duo: initial support added
  doc: sophgo: milkv_duo: document Milk-V Duo board

 arch/riscv/Kconfig                   |   4 +
 arch/riscv/dts/Makefile              |   1 +
 arch/riscv/dts/cv1800b-milkv-duo.dts |  38 ++++++
 arch/riscv/dts/cv1800b.dtsi          |  18 +++
 arch/riscv/dts/cv18xx.dtsi           | 192 +++++++++++++++++++++++++++
 board/sophgo/milkv_duo/Kconfig       |  28 ++++
 board/sophgo/milkv_duo/MAINTAINERS   |   6 +
 board/sophgo/milkv_duo/Makefile      |   5 +
 board/sophgo/milkv_duo/board.c       |   9 ++
 configs/milkv_duo_defconfig          |  23 ++++
 doc/board/index.rst                  |   1 +
 doc/board/sophgo/index.rst           |   8 ++
 doc/board/sophgo/milkv_duo.rst       |  64 +++++++++
 include/configs/milkv_duo.h          |  12 ++
 14 files changed, 409 insertions(+)
 create mode 100644 arch/riscv/dts/cv1800b-milkv-duo.dts
 create mode 100644 arch/riscv/dts/cv1800b.dtsi
 create mode 100644 arch/riscv/dts/cv18xx.dtsi
 create mode 100644 board/sophgo/milkv_duo/Kconfig
 create mode 100644 board/sophgo/milkv_duo/MAINTAINERS
 create mode 100644 board/sophgo/milkv_duo/Makefile
 create mode 100644 board/sophgo/milkv_duo/board.c
 create mode 100644 configs/milkv_duo_defconfig
 create mode 100644 doc/board/sophgo/index.rst
 create mode 100644 doc/board/sophgo/milkv_duo.rst
 create mode 100644 include/configs/milkv_duo.h

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2.41.0