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

* [PATCH v8 0/6] arm64 support for Milk-V Duo Module 01 EVB
@ 2025-06-12 13:28 Alexander Sverdlin
  2025-06-12 13:28 ` [PATCH v8 1/6] dt-bindings: soc: sophgo: Move SoCs/boards from riscv into soc, add SG2000 Alexander Sverdlin
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: Alexander Sverdlin @ 2025-06-12 13:28 UTC (permalink / raw)
  To: sophgo, soc
  Cc: Alexander Sverdlin, Rob Herring, Krzysztof Kozlowski,
	Conor Dooley, Chen Wang, Inochi Amaoto, Paul Walmsley,
	Palmer Dabbelt, Albert Ou, Alexandre Ghiti, Catalin Marinas,
	Will Deacon, Arnd Bergmann, Jisheng Zhang, Haylen Chu, Chao Wei,
	devicetree, linux-riscv, linux-kernel, linux-arm-kernel

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

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