[PATCH v5 0/7] riscv: add initial support for Canaan Kendryte K230

[Yangyu Chen]

K230 is an ideal chip for RISC-V Vector 1.0 evaluation now. Add initial
support for it to allow more people to participate in building drivers
to mainline for it.

This kernel has been tested upon factory SDK [1] with
k230_evb_only_linux_defconfig and patched mainline opensbi [2] to skip
locked pmp and successfully booted to busybox on initrd with this log [3].

[1] https://github.com/kendryte/k230_sdk
[2] https://github.com/cyyself/opensbi/tree/k230
[3] https://gist.github.com/cyyself/b9445f38cc3ba1094924bd41c9086176

Changes since v4:
- Reword commit message on dts that the B-ext version of c908 is 1.0 rather
  than 1.0-rc1

v4: https://lore.kernel.org/linux-riscv/tencent_587730262984A011834F42D0563BC6B10405@xxxxxx/

Changes since v3:
- Refactor Kconfig.soc which uses ARCH_CANAAN for regular Canaan SoCs and
  rename SOC_CANAAN to SOC_CANAAN_K210 for K210 in patch [5/7]
- Sort dt-binding stings on Cannan SoCs in alphanumerical order

v3: https://lore.kernel.org/linux-riscv/tencent_BB2364BBF1812F4E304F7BDDD11E57356605@xxxxxx/

Changes since v2:
- Add MIT License to dts file
- Sort dt-binding stings in alphanumerical order
- Sort filename in dts Makefile in alphanumerical order
- Rename canmv-k230.dts to k230-canmv.dts

v2: https://lore.kernel.org/linux-riscv/tencent_64A9B4B31C2D70D5633042461AC9F80C0509@xxxxxx/

Changes since v1:
- Patch dt-bindings in clint and plic
- Use enum in K230 compatible dt bindings
- Fix dts to pass `make dtbs_check`
- Add more details in commit message

v1: https://lore.kernel.org/linux-riscv/tencent_E15F8FE0B6769E6338AE690C7F4844A31706@xxxxxx/

Yangyu Chen (7):
  dt-bindings: riscv: Add T-HEAD C908 compatible
  dt-bindings: add Canaan K230 boards compatible strings
  dt-bindings: timer: Add Canaan K230 CLINT
  dt-bindings: interrupt-controller: Add Canaan K230 PLIC
  riscv: Kconfig.socs: Split ARCH_CANAAN and SOC_CANAAN_K210
  riscv: dts: add initial canmv-k230 and k230-evb dts
  riscv: config: enable ARCH_CANAAN in defconfig

 .../sifive,plic-1.0.0.yaml                    |   1 +
 .../devicetree/bindings/riscv/canaan.yaml     |   8 +-
 .../devicetree/bindings/riscv/cpus.yaml       |   1 +
 .../bindings/timer/sifive,clint.yaml          |   1 +
 arch/riscv/Kconfig.socs                       |   8 +-
 arch/riscv/Makefile                           |   2 +-
 arch/riscv/boot/dts/canaan/Makefile           |   2 +
 arch/riscv/boot/dts/canaan/k230-canmv.dts     |  24 +++
 arch/riscv/boot/dts/canaan/k230-evb.dts       |  24 +++
 arch/riscv/boot/dts/canaan/k230.dtsi          | 140 ++++++++++++++++++
 arch/riscv/configs/defconfig                  |   1 +
 arch/riscv/configs/nommu_k210_defconfig       |   3 +-
 .../riscv/configs/nommu_k210_sdcard_defconfig |   3 +-
 drivers/clk/Kconfig                           |   4 +-
 drivers/pinctrl/Kconfig                       |   4 +-
 drivers/reset/Kconfig                         |   4 +-
 drivers/soc/Makefile                          |   2 +-
 drivers/soc/canaan/Kconfig                    |   4 +-
 18 files changed, 220 insertions(+), 16 deletions(-)
 create mode 100644 arch/riscv/boot/dts/canaan/k230-canmv.dts
 create mode 100644 arch/riscv/boot/dts/canaan/k230-evb.dts
 create mode 100644 arch/riscv/boot/dts/canaan/k230.dtsi

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2.43.0