[PATCH v6 0/3] Add initial Milk-V Duo S board support

[Joshua Milas]

This adds an initial device tree for the Milk-V Duo S board
with support for reading from the SD card and network over
Ethernet. This is continued work from Michael Opdenacker's
v6 series [1] on the ARM64 and RISCV side. It has been tested
with ARM64 and RISCV64 to boot from an SD card, have networking
from ethernet, enumerate the wifi chip, have bluetooth, and can 
read a I2C slave device over i2c4.

---

v6
- Patches 1,3 from v5 were applied
- Rebased to latest sophgo/for-next 
- Added mmc1, mmc2, serial4 aliases
- Removed spi3 alias and node as it was conflicting with sdhci1/wifi
- Added wifi_pwrseq node for wifi chip
- Added pinctrl configs for enabled devices
- Reordered &sdhci0 properties
- Updated &sdhci1 node properties for wifi chip
- Added uart4 for bluetooth
- Changed memory from 256 MB to 512 MB on riscv side

v5: https://lore.kernel.org/sophgo/20260403111516.379795-1-josh.milas@gmail.com/
- Fixes spaces at beginning of line in &usb node of DTS

v4: https://lore.kernel.org/sophgo/20260328173450.219664-2-josh.milas@gmail.com/
- Rebased to latest sophogo/for-next
- Added usb node to arm64 and riscv DTS
- Removed sg200x link in commit messages
- Added missing change to v3 and removed link from v2

v3: https://lore.kernel.org/sophgo/20251029001052.36774-1-josh.milas@gmail.com/
- Added sg2000 interrupt controller and timer to documentation
- Added sg2000.dtsi for RISCV and moved DTS over to use it
- remove devices from DTS's to match what is available in the
  default pinmux config. spi0-2, i2c0-3, uart1-4
- Added i2c4 and spi3 aliases
- Removed milkv,duo-s from sophgo,cv1812h in documentation

v2: https://lore.kernel.org/sophgo/20251011014811.28521-1-josh.milas@gmail.com/
- Made new entry in docs to avoid DTC error
- "Milk-V DuoS" -> "Milk-V Duo S"
- Sorting of aliases
- Added uart*, emmc, mdio, gmac0, i2c*, spi*, dmac, saradc
  to device tree matching what is available on the pinout
- Removal of 'no-mmc' and 'no-sdio' for sdhci0 as it works without
- Added riscv device tree

v1: https://lore.kernel.org/sophgo/20250927173619.89768-1-josh.milas@gmail.com/

Link: https://lore.kernel.org/linux-riscv/20240421055710.143617-1-michael.opdenacker@bootlin.com/ [1]

Joshua Milas (3):
  arm64: dts: sophgo: add initial Milk-V Duo S board support
  riscv64: dts: sophgo: add SG2000 dtsi
  riscv64: dts: sophgo: add initial Milk-V Duo S board support

 arch/arm64/boot/dts/sophgo/Makefile           |   1 +
 .../boot/dts/sophgo/sg2000-milkv-duo-s.dts    | 245 ++++++++++++++++++
 arch/riscv/boot/dts/sophgo/Makefile           |   1 +
 .../boot/dts/sophgo/sg2000-milkv-duo-s.dts    | 245 ++++++++++++++++++
 arch/riscv/boot/dts/sophgo/sg2000.dtsi        |  53 ++++
 5 files changed, 545 insertions(+)
 create mode 100644 arch/arm64/boot/dts/sophgo/sg2000-milkv-duo-s.dts
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2000-milkv-duo-s.dts
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2000.dtsi


base-commit: f7337210bede62fc7c6230ef58013dddf7e0a921
-- 
2.54.0