From: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx> Add bindings documentation for Altera SOCFPGA bridges: * fpga2sdram * fpga2hps * hps2fpga * lwhps2fpga Signed-off-by: Alan Tull <dinguyen@xxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Matthew Gerlach <mgerlach@xxxxxxxxxx> --- 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html