[PATCH v8 0/6] arm64 support for Milk-V Duo Module 01 EVB

[Inochi Amaoto]

On Thu, Jun 12, 2025 at 03:28:08PM +0200, Alexander Sverdlin wrote:
> This series adds very basic support for Milk-V Duo Module 01 EVB [1] in
> arm64 mode. The SoC (SG2000) is dual-arch, RiscV and ARM64, the latter has
> been chosen because the upstream toolchain can be utilized.
> 
> Sophgo SG2000 seems to be a continuation of the Cvitek CV18xx series, same
> peripherals with an addition of ARM64 core. Therefore it would be
> beneficial not to copy-paste the peripherals' device-tree, but rather split
> the most suitable riscv DT into ARCH-specific and peripherals parts and
> just include the latter on the arm64 side.
> 
> This series adds the device-tree for Milk-V Duo Module 01 EVB, which
> in turn contains Milk-V Duo Module 01 (separate .dtsi) on it, which has
> SG2000 SoC inside (separate .dtsi).
> 
> This series has been tested with Sophgo-provided U-Boot binary [2]: it
> boots from SD card; pinctrl, serial, GPIO drivers are functional (same
> as for RiscV-based CV18xx SoCs).
> 
> Partial SoC documentation is available [3].
> 
> This series lacks the support of:
> - USB
> - Audio
> - Ethernet
> - WiFi
> - Bluetooth
> - eMMC
> - Video
> 
> Changelog:
> v8:
> - moved sdhci0_cfg and uart0_cfg pinctrl nodes from module into board .dtsi
> - dropped Inochi's RB tags from the patches affected by above changes
> v7:
> - dropped all reset stuff again; it will come independently in [5] and is
>   fully compatible;
> - rebase onto sophgo [6] for-next (3a8cef361be5) (almost v6.16-rc1)
> v6:
> - rebase onto sophgo/for-next (108a76779829)
> - dropped first patch refactoring RiscV counterpart (equivalent present in
>   sophgo/for-next)
> - added cpu_on/cpu_off properties into psci node
> - added reset-controller node, compatible comes in [4]
> v5:
> - PSCI node in DT
> v4:
> - minimized patch 1/7 (cleanups dropped)
> - cv18xx-cpu-intc.dtsi instead of cv18xx-cpu.dtsi+cv18xx-intc.dtsi in
> patch 1/7
> v3:
> - &cpus node has been moved into cv18xx-cpu.dtsi, &plic and &clint nodes
> were moved into cv18xx-intc.dtsi to reduce code duplication;
> v2:
> - dropped all patches related to the new reboot driver and corresponding DT
> and bindings;
> - grouped DT-related and config-related patches together;
> - added patch moving sophgo.yaml from riscv into soc (to share it with
> ARM); added SG2000 SoC and Milk-V Duo Module 01 EVB into it;
> - other changes are documented in the corresponding patches;
> 
> [1] https://milkv.io/docs/duo/getting-started/duo-module-01
> [2] https://github.com/milkv-duo/duo-buildroot-sdk-v2/releases/
> [3] https://github.com/sophgo/sophgo-doc/releases/download/sg2000-trm-v1.01/sg2000_trm_en.pdf
> [4] https://lore.kernel.org/sophgo/20250609230417.620089-1-alexander.sverdlin@gmail.com/
> [5] https://lore.kernel.org/all/20250608232214.771855-1-inochiama@gmail.com/
> [6] https://github.com/sophgo/linux.git
> 
> Alexander Sverdlin (6):
>   dt-bindings: soc: sophgo: Move SoCs/boards from riscv into soc, add
>     SG2000
>   arm64: dts: sophgo: Add initial SG2000 SoC device tree
>   arm64: dts: sophgo: Add Duo Module 01
>   arm64: dts: sophgo: Add Duo Module 01 Evaluation Board
>   arm64: Add SOPHGO SOC family Kconfig support
>   arm64: defconfig: Enable rudimentary Sophgo SG2000 support
> 
>  .../{riscv => soc/sophgo}/sophgo.yaml         |  7 +-
>  arch/arm64/Kconfig.platforms                  |  6 ++
>  arch/arm64/boot/dts/Makefile                  |  1 +
>  arch/arm64/boot/dts/sophgo/Makefile           |  2 +
>  .../sophgo/sg2000-milkv-duo-module-01-evb.dts | 76 ++++++++++++++++
>  .../sophgo/sg2000-milkv-duo-module-01.dtsi    | 40 +++++++++
>  arch/arm64/boot/dts/sophgo/sg2000.dtsi        | 86 +++++++++++++++++++
>  arch/arm64/configs/defconfig                  |  4 +
>  8 files changed, 221 insertions(+), 1 deletion(-)
>  rename Documentation/devicetree/bindings/{riscv => soc/sophgo}/sophgo.yaml (81%)
>  create mode 100644 arch/arm64/boot/dts/sophgo/Makefile
>  create mode 100644 arch/arm64/boot/dts/sophgo/sg2000-milkv-duo-module-01-evb.dts
>  create mode 100644 arch/arm64/boot/dts/sophgo/sg2000-milkv-duo-module-01.dtsi
>  create mode 100644 arch/arm64/boot/dts/sophgo/sg2000.dtsi
> 
> -- 
> 2.49.0
> 

LGTM, I will merge this patch next week if there is no other
comments.

Reviewed-by: Inochi Amaoto <inochiama at gmail.com>