The dt binding for Xilinx display pipeline. The pipeline can be
composed with multiple and different types of sub-devices. This node
is to represent the entire pipeline as a single entity.
Signed-off-by: Hyun Kwon <hyun.kwon@xxxxxxxxxx>
---
v2
- Remove linux specific terms
- Elaborate details, ex regarding port binding
- Rename xlnx,kms to xlnx,display
- Rename the file name to xlnx,display.txt
- Add examples of hardware blocks
---
---
.../bindings/display/xlnx/xlnx,display.txt | 68 ++++++++++++++++++++++
1 file changed, 68 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/xlnx/xlnx,display.txt
diff --git a/Documentation/devicetree/bindings/display/xlnx/xlnx,display.txt b/Documentation/devicetree/bindings/display/xlnx/xlnx,display.txt
new file mode 100644
index 0000000..fde1a35
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/xlnx/xlnx,display.txt
@@ -0,0 +1,68 @@
+Xilinx Display Pipeline
+-----------------------
+
+Xilinx display pipeline can be designed with various types of multiple IPs:
+IPs hardened on chip, ob board IPs, and soft IPs in programmable logic.
+While each component would need its own node, this node represents
+a whole display pipeline as a single entity by integrating individual subdevice
+with glue logics.
+
+The following illustrates some examples of topology:
+
+A linear pipeline with multiple blocks:
+
+ SoC DMA -> SoC display controller -> SoC display enc
+or,
+ FPGA DMA -> FPGA display controller -> FPGA display enc
+
+A pipeline with branches:
+
+ SoC DMA -> SoC display controller -> SoC display enc
+ |
+ FPGA DMA->
+or,
+ SoC DMA -> SoC display controller -> SoC display enc
+ |
+ -> FPAG display enc
+
+or,
+
+ SoC DMA -> SoC display controller -> SoC display enc
+ | |
+ FPGA display controller -> -> FPGA display enc
+
+Required properties:
+
+- compatible: Must be "xlnx,display".
+
+- ports: phandles for ports of display controller subdevice.
+ In the display controller port nodes, topology for entire pipeline
+ should be described using the DT bindings defined in
+ Documentation/devicetree/bindings/graph.txt.
+
+Example:
+
+ xlnx_display {
+ compatible = "xlnx,display";
+ ports = <&display_controller_port>;
+ };
+
+ display_controller {
+ ...
+ display_controller_port: port@0 {
+ display_controller_ep: endpoint {
+ remote-endpoint = <&dp_controller_ep>;
+ };
+ };
+ ...
+ };
+
+ dp_controller {
+ ...
+ dp_controller_port: port@0 {
+ dp_controller_ep: endpoint {
+ remote-endpoint = <&display_controller_ep>;
+ };
+ };
+ ...
+ };
--
2.7.4
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