[PATCH v5 00/10] riscv: add initial support for SpacemiT K1

[Palmer Dabbelt]

On Mon, 29 Jul 2024 17:28:03 PDT (-0700), dlan at gentoo.org wrote:
> SpacemiT K1 is an ideal chip for some new extension such as RISC-V Vector
> 1.0 and Zicond 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 Banana Pi BPI-F3 board on vendor U-Boot
> bootflow generated by Armbian SDK[1] and patched OpenSBI[2] to enable
> Zicboz, which does not in the vendor dts on its U-Boot. Then successfully
> booted to busybox on initrd with this log[3].
>
> As previous discussion in patch v1[4], maintainer expect more basic drivers
> ready before really merging it, which would be fine. For other follow-up patches,
> that are clk, pinctrl/gpio, reset.. My current goal would target at a headless
> system including SD card, emmc, and ethernet.

Acked-by: Palmer Dabbelt <palmer at rivosinc.com>

if you guys want to take this through some SOC tree.  I'm not really 
sure what the bar is for SOC support to get merged, but I'd be happy to 
just see this booting at all -- we've got a bunch of them floating 
around and the vendor kernels are pretty crusty, so anything's an 
improvement on my end.

> In this series, the uart node has no 'fifo-size', 'tx-threshold' property populated,
> will add them once this patch is resolved, see thread [5]
>
> P.S: talked to Yangyu, I will help and take care of this patch series, thanks
>
> ---
> Changes in v5:
> - fix cache-sets in dts
> - collect Rob's Ack
> - rebase to 6.11-rc1
> - Link to v4: https://lore.kernel.org/r/20240709-k1-01-basic-dt-v4-0-ae5bb5e56aaf@gentoo.org
>
> Changes in v4:
>  - add i/d-cache, l2-cache info
>  - squash uart1 dts node
>  - update tags
>  - Link to v3: https://lore.kernel.org/r/20240703-k1-01-basic-dt-v3-0-12f73b47461e@gentoo.org
>
> Changes in v3:
>  - fix dt_binding_check error
>  - fix plic compatible
>  - fix uart node name
>  - add uart1 dts node
>  - collect tags
>  - Link to v2: https://lore.kernel.org/r/20240627-k1-01-basic-dt-v2-0-cc06c7555f07@gentoo.org
>
> Changes in v2:
>  - fix timebase-frequency according to current setting
>  - add other uart dt nodes, fix input frequency
>  - introduce new uart compatible for K1 SoC
>  - add 'k1' prefix to bananapi-f3.dts
>  - fix k1-clint compatible
>  - fix some typos
>  - Link to v1: https://lore.kernel.org/r/tencent_BC64B7B1876F5D10479BD19112F73F262505@qq.com
>
> Link: https://github.com/BPI-SINOVOIP/armbian-build/tree/v24.04.30 [1]
> Link: https://gist.github.com/cyyself/a07096e6e99c949ed13f8fa16d884402 [2]
> Link: https://gist.github.com/cyyself/a2201c01f5c8955a119641f97b7d0280 [3]
> Link: https://lore.kernel.org/r/20240618-hardwood-footrest-ab5ec5bce3cf@wendy [4]
> Link: https://lore.kernel.org/linux-riscv/20240706082928.2238-1-jszhang@kernel.org/ [5]
>
> Signed-off-by: Yangyu Chen <cyy at cyyself.name>
> Signed-off-by: Yixun Lan <dlan at gentoo.org>
>
> ---
> Yangyu Chen (9):
>       dt-bindings: vendor-prefixes: add spacemit
>       dt-bindings: riscv: Add SpacemiT X60 compatibles
>       dt-bindings: riscv: add SpacemiT K1 bindings
>       dt-bindings: timer: Add SpacemiT K1 CLINT
>       dt-bindings: interrupt-controller: Add SpacemiT K1 PLIC
>       riscv: add SpacemiT SoC family Kconfig support
>       riscv: dts: add initial SpacemiT K1 SoC device tree
>       riscv: dts: spacemit: add Banana Pi BPI-F3 board device tree
>       riscv: defconfig: enable SpacemiT SoC
>
> Yixun Lan (1):
>       dt-bindings: serial: 8250: Add SpacemiT K1 uart compatible
>
>  .../interrupt-controller/sifive,plic-1.0.0.yaml    |   1 +
>  Documentation/devicetree/bindings/riscv/cpus.yaml  |   1 +
>  .../devicetree/bindings/riscv/spacemit.yaml        |  28 ++
>  Documentation/devicetree/bindings/serial/8250.yaml |   4 +-
>  .../devicetree/bindings/timer/sifive,clint.yaml    |   1 +
>  .../devicetree/bindings/vendor-prefixes.yaml       |   2 +
>  arch/riscv/Kconfig.socs                            |   5 +
>  arch/riscv/boot/dts/Makefile                       |   1 +
>  arch/riscv/boot/dts/spacemit/Makefile              |   2 +
>  arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts    |  19 +
>  arch/riscv/boot/dts/spacemit/k1.dtsi               | 459 +++++++++++++++++++++
>  arch/riscv/configs/defconfig                       |   1 +
>  12 files changed, 523 insertions(+), 1 deletion(-)
> ---
> base-commit: 8400291e289ee6b2bf9779ff1c83a291501f017b
> change-id: 20240626-k1-01-basic-dt-1aa31eeebcd2
>
> Best regards,