[PATCH v7 0/3] Add Efinix FPGA configuration support

From: Ian Dannapel <[email protected]>

Hi all,

This is v7 of the series adding support for programming Efinix FPGAs
over SPI using the fpga-mgr subsystem.

The series adds DT bindings for the Efinix SPI configuration interface
and a new FPGA manager driver implementing passive SPI configuration.

Testing:
- Verified on a custom board with an Efinix Trion T13 FPGA
- Tested full bitstream configuration over SPI at 25 MHz

Changes since v6:

dt-bindings: fpga: Add Efinix SPI programming bindings
- Require spi-cpha and spi-cpol in the binding to match the driver’s probe-time requirement
- Dropped review tag

fpga-mgr: Add Efinix SPI programming driver
- moved Makefile entry to the end of the FPGA manager section
- moved "keep asserted CS" comment to first appeareance
- removed unnecessary variable struct device *dev = &mgr->dev; in fpga mgr callbacks
- trimmed unused spi_device_id's

Ian Dannapel (3):
  dt-bindings: vendor-prefix: Add prefix for Efinix, Inc.
  dt-bindings: fpga: Add Efinix SPI programming bindings
  fpga-mgr: Add Efinix SPI programming driver

 .../bindings/fpga/efinix,trion-config.yaml    |  98 +++++++
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 drivers/fpga/Kconfig                          |   7 +
 drivers/fpga/Makefile                         |   1 +
 drivers/fpga/efinix-spi.c                     | 260 ++++++++++++++++++
 5 files changed, 368 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/fpga/efinix,trion-config.yaml
 create mode 100644 drivers/fpga/efinix-spi.c

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2.43.0