[v4,00/10] Add Milk-V Pioneer RISC-V board support

From: Chen Wang <unicorn_wang@outlook.com>

Milk-V Pioneer [1] is a developer motherboard based on SOPHON SG2042 [2]
in a standard mATX form factor. Add minimal device
tree files for the SG2042 SOC and the Milk-V Pioneer board.

Now only support basic uart drivers to boot up into a basic console.

Thanks,
Chen

---

Changes in v4:
  The patch series is based on v6.6-rc1. You can simply review or test
  the patches at the link [6].
  - Update bindings files for sg2042 clint as per intput from reviewers:
    - rename filename from sophgo,sg2042-clint-mswi/sg2042-clint-mtimer
      to thead,c900-aclint-mswi/thead,c900-aclint-mtimer.
    - rename compatible strings accordingly.
  - Update dts as per input from reviewers: don't use macro for cpus's isa
    properties; use new compatible strings for mtimer/mswi of clint.
  - Use only one email-address for SoB.

Changes in v3 [v3]:
  The patch series is based on v6.6-rc1. You can simply review or test
  the patches at the link [5].
  - add new vendor specific compatible strings to identify timer/mswi for sg2042 clint
  - updated maintainers info. for sophgo devicetree
  - remove the quirk changes for uart
  - updated dts, such as:
    - add "riscv,isa-base"/"riscv,isa-extensions" for cpus
    - update l2 cache node's name
    - remove memory and pmu nodes
  - fixed other issues as per input from reviewers.

Changes in v2 [v2]:
  The patch series is based on v6.6-rc1. You can simply review or test
  the patches at the link [4].
  - Improve format for comment of commitments as per input from last review.
  - Improve format of DTS as per input from last review.
  - Remove numa related stuff from DTS. This part is just for optimization, may
    add it later if really needed.

Changes in v1:
   The patch series is based on v6.6-rc1. Due to it is not sent in thread,
   I have listed permlinks of the patchset [v1-0/12] ~ [v1-12/12] here for
   quick reference. You can simply review or test the patches at the link [3].

[1]: https://milkv.io/pioneer
[2]: https://en.sophgo.com/product/introduce/sg2042.html
[3]: https://github.com/unicornx/linux-riscv/commits/milkv-pioneer-minimal
[4]: https://github.com/unicornx/linux-riscv/commits/milkv-pioneer-minimal-v2
[5]: https://github.com/unicornx/linux-riscv/commits/milkv-pioneer-minimal-v3
[6]: https://github.com/unicornx/linux-riscv/commits/milkv-pioneer-minimal-v4
[v1-0/12]:https://lore.kernel.org/linux-riscv/20230915070856.117514-1-wangchen20@iscas.ac.cn/
[v1-1/12]:https://lore.kernel.org/linux-riscv/20230915071005.117575-1-wangchen20@iscas.ac.cn/
[v1-2/12]:https://lore.kernel.org/linux-riscv/20230915071409.117692-1-wangchen20@iscas.ac.cn/
[v1-3/12]:https://lore.kernel.org/linux-riscv/20230915072242.117935-1-wangchen20@iscas.ac.cn/
[v1-4/12]:https://lore.kernel.org/linux-riscv/20230915072333.117991-1-wangchen20@iscas.ac.cn/
[v1-5/12]:https://lore.kernel.org/linux-riscv/20230915072358.118045-1-wangchen20@iscas.ac.cn/
[v1-6/12]:https://lore.kernel.org/linux-riscv/20230915072415.118100-1-wangchen20@iscas.ac.cn/
[v1-7/12]:https://lore.kernel.org/linux-riscv/20230915072431.118154-1-wangchen20@iscas.ac.cn/
[v1-8/12]:https://lore.kernel.org/linux-riscv/20230915072451.118209-1-wangchen20@iscas.ac.cn/
[v1-9/12]:https://lore.kernel.org/linux-riscv/20230915072517.118266-1-wangchen20@iscas.ac.cn/
[v1-10/12]:https://lore.kernel.org/linux-riscv/20230915072558.118325-1-wangchen20@iscas.ac.cn/
[v1-11/12]:https://lore.kernel.org/linux-riscv/20230915072624.118388-1-wangchen20@iscas.ac.cn/
[v1-12/12]:https://lore.kernel.org/linux-riscv/20230915072653.118448-1-wangchen20@iscas.ac.cn/
[v2]:https://lore.kernel.org/linux-riscv/cover.1695189879.git.wangchen20@iscas.ac.cn/
[v3]:https://lore.kernel.org/linux-riscv/cover.1695804418.git.unicornxw@gmail.com/

---

Chen Wang (8):
  riscv: Add SOPHGO SOC family Kconfig support
  dt-bindings: vendor-prefixes: add milkv/sophgo
  dt-bindings: riscv: add sophgo sg2042 bindings
  dt-bindings: riscv: Add T-HEAD C920 compatibles
  dt-bindings: interrupt-controller: Add Sophgo SG2042 PLIC
  riscv: dts: add initial Sophgo SG2042 SoC device tree
  riscv: dts: sophgo: add Milk-V Pioneer board device tree
  riscv: defconfig: enable SOPHGO SoC

Inochi Amaoto (2):
  dt-bindings: timer: Add Sophgo sg2042 CLINT timer
  dt-bindings: interrupt-controller: Add Sophgo sg2042 CLINT mswi

 .../sifive,plic-1.0.0.yaml                    |    1 +
 .../thead,c900-aclint-mswi.yaml               |   43 +
 .../devicetree/bindings/riscv/cpus.yaml       |    1 +
 .../devicetree/bindings/riscv/sophgo.yaml     |   28 +
 .../timer/thead,c900-aclint-mtimer.yaml       |   43 +
 .../devicetree/bindings/vendor-prefixes.yaml  |    4 +
 MAINTAINERS                                   |    7 +
 arch/riscv/Kconfig.socs                       |    5 +
 arch/riscv/boot/dts/Makefile                  |    1 +
 arch/riscv/boot/dts/sophgo/Makefile           |    3 +
 arch/riscv/boot/dts/sophgo/sg2042-cpus.dtsi   | 2000 +++++++++++++++++
 .../boot/dts/sophgo/sg2042-milkv-pioneer.dts  |   19 +
 arch/riscv/boot/dts/sophgo/sg2042.dtsi        |  325 +++
 arch/riscv/configs/defconfig                  |    1 +
 14 files changed, 2481 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/thead,c900-aclint-mswi.yaml
 create mode 100644 Documentation/devicetree/bindings/riscv/sophgo.yaml
 create mode 100644 Documentation/devicetree/bindings/timer/thead,c900-aclint-mtimer.yaml
 create mode 100644 arch/riscv/boot/dts/sophgo/Makefile
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2042-cpus.dtsi
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
 create mode 100644 arch/riscv/boot/dts/sophgo/sg2042.dtsi


base-commit: 0bb80ecc33a8fb5a682236443c1e740d5c917d1d