[PATCH v12 5/6] ARM: socfpga: add bindings document for fpga bridge drivers
From: <hidden>
Date: 2015-10-27 22:19:58
Also in:
lkml
Subsystem:
fpga manager framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Moritz Fischer, Xu Yilun, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Alan Tull <redacted>
Add bindings documentation for Altera SOCFPGA bridges:
* fpga2sdram
* fpga2hps
* hps2fpga
* lwhps2fpga
Signed-off-by: Alan Tull <redacted>
Signed-off-by: Dinh Nguyen <redacted>
Signed-off-by: Matthew Gerlach <redacted>
---
v2: separate into 2 documents for the 2 drivers
v12: bump version to line up with simple-fpga-bus version
remove Linux specific notes such as references to sysfs
move non-DT specific documentation elsewhere
remove bindings that would have been used to pass configuration
clean up formatting
---
.../bindings/fpga/altera-fpga2sdram-bridge.txt | 18 ++++++++++
.../bindings/fpga/altera-hps2fpga-bridge.txt | 36 ++++++++++++++++++++
2 files changed, 54 insertions(+)
create mode 100644 Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt
create mode 100644 Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt
diff --git a/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt
new file mode 100644
index 0000000..11eb5b7
--- /dev/null
+++ b/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt@@ -0,0 +1,18 @@ +Altera FPGA To SDRAM Bridge Driver + +Required properties: +- compatible : Should contain "altr,socfpga-fpga2sdram-bridge" + +Optional properties: +- label : User-readable name for this bridge. + Default is br<device#> +- init-val : 0 if driver should disable bridge at startup + 1 if driver should enable bridge at startup + Default is to leave bridge in current state. + +Example: + fpga2sdram_br: fpgabridge@3 { + compatible = "altr,socfpga-fpga2sdram-bridge"; + label = "fpga2sdram"; + init-val = <0>; + };
diff --git a/Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt
new file mode 100644
index 0000000..eb52f3b
--- /dev/null
+++ b/Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt@@ -0,0 +1,36 @@ +Altera FPGA/HPS Bridge Driver + +Required properties: +- compatible : Should contain one of: + "altr,socfpga-hps2fpga-bridge", + "altr,socfpga-lwhps2fpga-bridge", or + "altr,socfpga-fpga2hps-bridge" +- clocks : Clocks used by this module. + +Optional properties: +- label : User-readable name for this bridge. + Default is br<device#> +- init-val : 0 if driver should disable bridge at startup. + 1 if driver should enable bridge at startup. + Default is to leave bridge in its current state. + +Example: + hps_fpgabridge0: fpgabridge@0 { + compatible = "altr,socfpga-hps2fpga-bridge"; + label = "hps2fpga"; + clocks = <&l4_main_clk>; + init-val = <1>; + }; + + hps_fpgabridge1: fpgabridge@1 { + compatible = "altr,socfpga-lwhps2fpga-bridge"; + label = "lwhps2fpga"; + clocks = <&l4_main_clk>; + init-val = <0>; + }; + + hps_fpgabridge2: fpgabridge@2 { + compatible = "altr,socfpga-fpga2hps-bridge"; + label = "fpga2hps"; + clocks = <&l4_main_clk>; + };
--
1.7.9.5