[v4,00/10] riscv: add initial support for SpacemiT K1

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.

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 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]

To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Conor Dooley <conor@kernel.org>
To: Paul Walmsley <paul.walmsley@sifive.com>
To: Palmer Dabbelt <palmer@dabbelt.com>
To: Albert Ou <aou@eecs.berkeley.edu>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Thomas Gleixner <tglx@linutronix.de>
To: Samuel Holland <samuel.holland@sifive.com>
To: Anup Patel <anup@brainfault.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Jiri Slaby <jirislaby@kernel.org>
To: Lubomir Rintel <lkundrak@v3.sk>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: Jesse Taube <jesse@rivosinc.com>
Cc: Jisheng Zhang <jszhang@kernel.org>
Cc: Inochi Amaoto <inochiama@outlook.com>
Cc: Icenowy Zheng <uwu@icenowy.me>
Cc: Meng Zhang <zhangmeng.kevin@spacemit.com>
Cc: Meng Zhang <kevin.z.m@hotmail.com>

Signed-off-by: Yangyu Chen <cyy@cyyself.name>
Signed-off-by: Yixun Lan <dlan@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: 256abd8e550ce977b728be79a74e1729438b4948
change-id: 20240626-k1-01-basic-dt-1aa31eeebcd2

Best regards,

On Tue, Jul 09, 2024 at 03:18:43AM +0000, Yixun Lan 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.

This stuff is already too late for 6.11 as I already sent my PRs, so
there's no immediate rush. Is there any progress made on creating the
clock or pinctrl drivers?

Cheers,
Conor.

Hi Conor:

On 17:08 Thu 11 Jul     , Conor Dooley wrote:
> On Tue, Jul 09, 2024 at 03:18:43AM +0000, Yixun Lan 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.
> 
> This stuff is already too late for 6.11 as I already sent my PRs, so
understood, no worry, let's target 6.12, I will send an updated version
once next -rc1 tagged.

> there's no immediate rush. Is there any progress made on creating the
> clock or pinctrl drivers?
I'm working on pinctrl, probably will send an initial version next week
(ideally should include gpio/gpio-irq, or at least will push pinctrl part out..)

for clk, I think Haylen is working on this..
> 
> Cheers,
> Conor.