[PATCH 1/3] dt: bindings: fpga: add lattice machxo2 slave spi binding description

From: Moritz Fischer
Date: Mon Apr 16 2018 - 23:44:39 EST


From: Paolo Pisati <p.pisati@xxxxxxxxx>

Add dt binding documentation details for Lattice MachXO2 FPGA configuration
over Slave SPI interface.

Signed-off-by: Paolo Pisati <p.pisati@xxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Acked-by: Alan Tull <atull@xxxxxxxxxx>
Signed-off-by: Moritz Fischer <mdf@xxxxxxxxxx>
---
.../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 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>;
+ };
+ };
--
2.17.0