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[2.235.152.247]) by smtp.gmail.com with ESMTPSA id r60sm19231849wrb.37.2017.05.01.06.15.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 01 May 2017 06:15:13 -0700 (PDT) From: Paolo Pisati To: Alan Tull , Rob Herring , Mark Rutland , Moritz Fischer Cc: devicetree@vger.kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] dt: bindings: fpga: add lattice machxo2 slave spi binding description Date: Mon, 1 May 2017 15:15:11 +0200 Message-Id: <1493644512-14776-2-git-send-email-p.pisati@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1493644512-14776-1-git-send-email-p.pisati@gmail.com> References: <1493644512-14776-1-git-send-email-p.pisati@gmail.com> Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add dt binding documentation details for Lattice MachXO2 FPGA configuration over Slave SPI interface. Signed-off-by: Paolo Pisati --- .../bindings/fpga/lattice-machxo2-spi.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt diff --git a/Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt b/Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt new file mode 100644 index 0000000..c3ef26bd --- /dev/null +++ b/Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt @@ -0,0 +1,29 @@ +Lattice MachXO2 Slave SPI FPGA Manager + +Lattice MachXO2 FPGAs support a method of loading the bitstream over +'slave SPI' interface. + +See 'MachXO2ProgrammingandConfigurationUsageGuide.pdf' on www.latticesemi.com + +Required properties: +- compatible: should contain "lattice,machxo2-slave-spi" +- reg: spi chip select of the FPGA + +Example for full FPGA configuration: + + fpga-region0 { + compatible = "fpga-region"; + fpga-mgr = <&fpga_mgr_spi>; + #address-cells = <0x1>; + #size-cells = <0x1>; + }; + + spi1: spi@2000 { + ... + + fpga_mgr_spi: fpga-mgr@0 { + compatible = "lattice,machxo2-slave-spi"; + spi-max-frequency = <60000000>; + reg = <0>; + }; + };