Re: [PATCH 1/2] dt: bindings: fpga: add lattice machxo2 slave spi binding description
From: Moritz Fischer <mdf@kernel.org>
Date: 2018-03-16 16:31:12
Also in:
linux-fpga, lkml
On Fri, Mar 16, 2018 at 04:54:28PM +0100, Paolo Pisati wrote:
Add dt binding documentation details for Lattice MachXO2 FPGA configuration over Slave SPI interface. Signed-off-by: Paolo Pisati <redacted> Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
quoted hunk ↗ jump to hunk
--- .../bindings/fpga/lattice-machxo2-spi.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txtdiff --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..a8c362e --- /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.
Nit: a 'slave SPI'
+
+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 = <8000000>;
+ reg = <0>;
+ };
+ };
--
2.7.4Thanks, Moritz