On Fri, Mar 16, 2018 at 11:31 AM, Moritz Fischer [off-list ref] wrote:

On Fri, Mar 16, 2018 at 04:54:28PM +0100, Paolo Pisati wrote:

quoted

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>

Acked-by: Alan Tull <atull@kernel.org>

Thanks,
Alan

quoted

---
 .../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..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'

quoted

+
+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>;
+             };
+     };
--
2.7.4

Thanks,

Moritz