Implemented basic SPI support for SG2042 SoC[1] using
the upstreamed Synopsys DW-SPI IP.

The way of testing can be found here [2].

Signed-off-by: Zixian Zeng <sycamoremoon376@gmail.com>
---
Changes in v6:
- patch 1: Apply Krzysztof's tag.
- patch 2: Adjust enum to alphabetical order.
- Link to v5: https://lore.kernel.org/r/20250422-sfg-spi-v5-0-c7f6554a94a0@gmail.com

Changes in v5:
- patch 1: New patch merges all vendors fall back to snps,dw-apb-ssi into one entry
- Link to v4: https://lore.kernel.org/r/20250407-sfg-spi-v4-0-30ac949a1e35@gmail.com

Changes in v4:
- Adjust the order of spi nodes.
- Place the binding after Renesas.
- Fix the description issues of patches.
- Link to v3: https://lore.kernel.org/r/20250313-sfg-spi-v3-0-e686427314b2@gmail.com

Changes in v3:
- Remove the spi status on sg2042-milkv-pioneer board.
- Remove clock GATE_CLK_SYSDMA_AXI from spi. [3]
- Create dt-binding of compatible property.
- Replace the general compatible property with SoC-specific in dts.
- Link to v2: https://lore.kernel.org/r/20250228-sfg-spi-v2-1-8bbf23b85d0e@gmail.com

Changes in v2:
- Rebase v1 to sophgo/master(github.com/sophgo/linux.git).
- Order properties in device node.
- Remove unevaluated properties `clock-frequency`.
- Set default status to disable.
- Link to v1: https://lore.kernel.org/r/20250228-sfg-spi-v1-1-b989aed94911@gmail.com

Link: https://github.com/sophgo/sophgo-doc/blob/main/SG2042/TRM/source/SPI.rst [1]
Link:
https://lore.kernel.org/all/CAKyUbwXqg13Ho7QHw8vV2W6OcObphwhQ8HUrZMDNBxrVxLmdug@mail.gmail.com/
[2]
Link: https://github.com/sophgo/sophgo-doc/blob/main/SG2042/TRM/source/clock.rst#clock-tree [3]

---
Zixian Zeng (3):
      spi: dt-bindings: snps,dw-apb-ssi: Merge duplicate compatible entry
      spi: dt-bindings: snps,dw-apb-ssi: Add compatible for SOPHGO SG2042 SoC
      riscv: sophgo: dts: Add spi controller for SG2042

 .../devicetree/bindings/spi/snps,dw-apb-ssi.yaml   | 19 ++++++----------
 arch/riscv/boot/dts/sophgo/sg2042.dtsi             | 26 ++++++++++++++++++++++
 2 files changed, 33 insertions(+), 12 deletions(-)
---
base-commit: 8ffd015db85fea3e15a77027fda6c02ced4d2444
change-id: 20250228-sfg-spi-e3f2aeca09ab

Best regards,
-- 
Zixian Zeng <sycamoremoon376@gmail.com>

On Fri, 25 Apr 2025 10:28:11 +0800, Zixian Zeng wrote:
> Implemented basic SPI support for SG2042 SoC[1] using
> the upstreamed Synopsys DW-SPI IP.
> 
> The way of testing can be found here [2].
> 
> 

Applied to for-next, thanks!

[3/3] riscv: sophgo: dts: Add spi controller for SG2042
      https://github.com/sophgo/linux/commit/ae246f5c0ce444e5c964aa3a7d2d14a6df9153d6

Thanks,
Inochi

On Fri, 25 Apr 2025 10:28:11 +0800, Zixian Zeng wrote:
> Implemented basic SPI support for SG2042 SoC[1] using
> the upstreamed Synopsys DW-SPI IP.
> 
> The way of testing can be found here [2].
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/3] spi: dt-bindings: snps,dw-apb-ssi: Merge duplicate compatible entry
      commit: 71cfb1f88f772fb92a68a4ab85b16ccd5cc8535d
[2/3] spi: dt-bindings: snps,dw-apb-ssi: Add compatible for SOPHGO SG2042 SoC
      commit: 0889c4d28ad79b55ee8cf3c818e9d86203ace8f0

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark