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

On Thu, 12 Jun 2025 15:28:08 +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.
> 
> [...]

Applied to for-next, thanks!

[1/6] dt-bindings: soc: sophgo: Move SoCs/boards from riscv into soc, add SG2000
      https://github.com/sophgo/linux/commit/f71cc64dde536e1e805e5b38855d8d3a01eec845
[2/6] arm64: dts: sophgo: Add initial SG2000 SoC device tree
      https://github.com/sophgo/linux/commit/7846621ce517375537ae2772e54f033a241fe382
[3/6] arm64: dts: sophgo: Add Duo Module 01
      https://github.com/sophgo/linux/commit/7a2f4a250a1129e9d92ed8c43c02f528181df679
[4/6] arm64: dts: sophgo: Add Duo Module 01 Evaluation Board
      https://github.com/sophgo/linux/commit/29f4eab1d97c89a0a72793823db287ea6649baf6
[5/6] arm64: Add SOPHGO SOC family Kconfig support
      https://github.com/sophgo/linux/commit/af00cebfbb31190dd0124c431d1baabae456c313
[6/6] arm64: defconfig: Enable rudimentary Sophgo SG2000 support
      https://github.com/sophgo/linux/commit/1793a187e20257c260f520d42611966d6d249f22

Thanks,
Inochi

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@gmail.com>