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author | Paolo Pisati <p.pisati@gmail.com> | 2018-04-17 06:43:35 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-23 14:33:01 +0300 |
commit | d549ac081c41d1925804bf73393aca8e3978b582 (patch) | |
tree | 46df713d9a14eae5a5d77dad1724e613bb6c189d /Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt | |
parent | 84d84c5b8ff1a91bbd463a84df65b16ea60dff5d (diff) | |
download | linux-d549ac081c41d1925804bf73393aca8e3978b582.tar.xz |
dt: bindings: fpga: add lattice machxo2 slave spi binding description
Add dt binding documentation details for Lattice MachXO2 FPGA configuration
over Slave SPI interface.
Signed-off-by: Paolo Pisati <p.pisati@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Alan Tull <atull@kernel.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt')
-rw-r--r-- | Documentation/devicetree/bindings/fpga/lattice-machxo2-spi.txt | 29 |
1 files changed, 29 insertions, 0 deletions
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 000000000000..a8c362eb160c --- /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 = <8000000>; + reg = <0>; + }; + }; |