diff options
| author | Alan Tull <atull@opensource.altera.com> | 2016-07-12 21:36:41 +0200 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2016-11-18 18:55:17 +0100 |
| commit | e3d19244c84319a7a7befc7965bbe6e6f8962a2f (patch) | |
| tree | 479c852d6f9730a8605642c0814df1fe1597d12b /Documentation/devicetree | |
| parent | of: base: add support to get machine model name (diff) | |
| download | linux-e3d19244c84319a7a7befc7965bbe6e6f8962a2f.tar.xz linux-e3d19244c84319a7a7befc7965bbe6e6f8962a2f.zip | |
ARM: socfpga: add bindings document for fpga bridge drivers
Add bindings documentation for Altera SOCFPGA bridges:
* fpga2sdram
* fpga2hps
* hps2fpga
* lwhps2fpga
Signed-off-by: Alan Tull <atull@opensource.altera.com>
Signed-off-by: Matthew Gerlach <mgerlach@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt | 16 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt | 39 |
2 files changed, 55 insertions, 0 deletions
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 000000000000..817a8d4bf903 --- /dev/null +++ b/Documentation/devicetree/bindings/fpga/altera-fpga2sdram-bridge.txt @@ -0,0 +1,16 @@ +Altera FPGA To SDRAM Bridge Driver + +Required properties: +- compatible : Should contain "altr,socfpga-fpga2sdram-bridge" + +Optional properties: +- bridge-enable : 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: + fpga_bridge3: fpga-bridge@ffc25080 { + compatible = "altr,socfpga-fpga2sdram-bridge"; + reg = <0xffc25080 0x4>; + bridge-enable = <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 000000000000..6406f9337eeb --- /dev/null +++ b/Documentation/devicetree/bindings/fpga/altera-hps2fpga-bridge.txt @@ -0,0 +1,39 @@ +Altera FPGA/HPS Bridge Driver + +Required properties: +- regs : base address and size for AXI bridge module +- compatible : Should contain one of: + "altr,socfpga-lwhps2fpga-bridge", + "altr,socfpga-hps2fpga-bridge", or + "altr,socfpga-fpga2hps-bridge" +- resets : Phandle and reset specifier for this bridge's reset +- clocks : Clocks used by this module. + +Optional properties: +- bridge-enable : 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: + fpga_bridge0: fpga-bridge@ff400000 { + compatible = "altr,socfpga-lwhps2fpga-bridge"; + reg = <0xff400000 0x100000>; + resets = <&rst LWHPS2FPGA_RESET>; + clocks = <&l4_main_clk>; + bridge-enable = <0>; + }; + + fpga_bridge1: fpga-bridge@ff500000 { + compatible = "altr,socfpga-hps2fpga-bridge"; + reg = <0xff500000 0x10000>; + resets = <&rst HPS2FPGA_RESET>; + clocks = <&l4_main_clk>; + bridge-enable = <1>; + }; + + fpga_bridge2: fpga-bridge@ff600000 { + compatible = "altr,socfpga-fpga2hps-bridge"; + reg = <0xff600000 0x100000>; + resets = <&rst FPGA2HPS_RESET>; + clocks = <&l4_main_clk>; + }; |