linux-kernel - Re: [PATCH v6 0/6] arm64 support for Milk-V Duo Module 01 EVB

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Message-ID: <yavt4eztc4n74h55ilqbw46df6hxh4j3uwuefbzcsx7vxezrnn@5mpll7lymyp4>
Date: Tue, 10 Jun 2025 10:00:02 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Alexander Sverdlin <alexander.sverdlin@...il.com>, 
	sophgo@...ts.linux.dev, soc@...ts.linux.dev
Cc: Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Chen Wang <unicorn_wang@...look.com>, Inochi Amaoto <inochiama@...il.com>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>, 
	Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>, 
	Jisheng Zhang <jszhang@...nel.org>, Haylen Chu <heylenay@...look.com>, 
	Chao Wei <chao.wei@...hgo.com>, devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 0/6] arm64 support for Milk-V Duo Module 01 EVB

On Tue, Jun 10, 2025 at 01:41:11AM +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:
> 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/
> 
> 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 | 31 +++++++
>  .../sophgo/sg2000-milkv-duo-module-01.dtsi    | 85 +++++++++++++++++
>  arch/arm64/boot/dts/sophgo/sg2000.dtsi        | 91 +++++++++++++++++++
>  arch/arm64/configs/defconfig                  |  4 +
>  8 files changed, 226 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
> 

With all change I mention fixed:

Reviewed-by: Inochi Amaoto <inochiama@...il.com>