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([2a00:20:636a:3838:3bf9:3a9b:8000:4975]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ba2a112cc9csm90502766b.40.2026.04.16.07.42.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Apr 2026 07:42:39 -0700 (PDT) From: iansdannapel@gmail.com To: linux-fpga@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: mdf@kernel.org, yilun.xu@intel.com, trix@redhat.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, neil.armstrong@linaro.org, heiko@sntech.de, marex@nabladev.com, prabhakar.mahadev-lad.rj@bp.renesas.com, dev@kael-k.io, Ian Dannapel Subject: [PATCH v7 0/3] Add Efinix FPGA configuration support Date: Thu, 16 Apr 2026 16:42:33 +0200 Message-ID: <20260416144237.373852-1-iansdannapel@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-fpga@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Ian Dannapel 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 -- 2.43.0