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Message-Id: <20180412151348.4584-2-atull@kernel.org>
Date: Thu, 12 Apr 2018 10:13:47 -0500
From: Alan Tull <atull@...nel.org>
To: Moritz Fischer <mdf@...nel.org>
Cc: Alan Tull <atull@...nel.org>, linux-kernel@...r.kernel.org,
linux-fpga@...r.kernel.org, Paolo Pisati <p.pisati@...il.com>
Subject: [PATCH v11 1/2] dt: bindings: fpga: add lattice machxo2 slave spi binding description
From: Paolo Pisati <p.pisati@...il.com>
Add dt binding documentation details for Lattice MachXO2 FPGA configuration
over Slave SPI interface.
Signed-off-by: Paolo Pisati <p.pisati@...il.com>
Acked-by: Rob Herring <robh@...nel.org>
Acked-by: Moritz Fischer <mdf@...nel.org>
Acked-by: Alan Tull <atull@...nel.org>
---
.../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@...0 {
+ ...
+
+ fpga_mgr_spi: fpga-mgr@0 {
+ compatible = "lattice,machxo2-slave-spi";
+ spi-max-frequency = <8000000>;
+ reg = <0>;
+ };
+ };
--
2.16.2
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