[PATCH V2 0/3] spi: atcspi200: Add support for Andes ATCSPI200 SPI controller

CL Wang
2025-12-10T09:13:30Z

Hi all,

This series adds support for the Andes ATCSPI200 SPI controller.

Changes in v2 include:
- Added missing clock disable/unprepare handling in probe error paths.
- Switched to devm_dma_request_chan() for proper DMA channel cleanup.
- Updated the DT binding and documented all compatible strings.
- Dropped the "spi_" prefix from dma-names as suggested.
- Added suspend/resume support for power management.
- Added the "andestech,ae350-spi" compatible string.

AE350 is part of the AndeShape™ platform family and is a commercially
supported product with a fixed, documented SoC-level architecture (memory
map, interrupt topology, and peripheral integration). Although AE350 is
often deployed on FPGA boards, the platform behaves as a stable SoC
integration rather than a prototype.

Upstream Linux already accepts FPGA-based platform-level compatible strings
for stable SoC-like integrations. For example, the Tensilica FPGA platform
uses:
compatible = "cdns,xtfpga-spi";

Following the same rationale, "andestech,ae350-spi" is proposed as the
platform-level compatible string for AE350-based devices.

More information about AE350 can be found at:
https://www.andestech.com/en/products-solutions/andeshape-platforms/ae350-axi-based-platform-pre-integrated-with-n25f-nx25f-a25-ax25/

Patch overview:
- Patch 1: Adds the device tree binding documentation.
- Patch 2: Add ATCSPI200 SPI controller driver.
- Patch 3: Add MAINTAINERS entry for the ATCSPI200 SPI controller driver.

Comments and reviews are welcome.
Thanks for your time.

Best regards,
CL

CL Wang (3):
dt-bindings: spi: Add support for ATCSPI200 SPI controller
spi: atcspi200: Add ATCSPI200 SPI controller driver
MAINTAINERS: Add MAINTAINERS entry for the ATCSPI200 SPI controller
driver

.../bindings/spi/andestech,qilai-spi.yaml | 86 +++
MAINTAINERS | 6 +
drivers/spi/Kconfig | 9 +
drivers/spi/Makefile | 1 +
drivers/spi/spi-atcspi200.c | 680 ++++++++++++++++++
5 files changed, 782 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/andestech,qilai-spi.yaml
create mode 100644 drivers/spi/spi-atcspi200.c

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2.34.1