[LINUX PATCH 1/2] dt-bindings: display: xlnx: Add DSI 2.0 Tx subsystem documentation

[Venkateshwar Rao Gannavarapu]

This patch adds dt binding for Xilinx DSI TX subsystem.

The Xilinx MIPI DSI (Display serial interface) Transmitter Subsystem
implements the Mobile Industry Processor Interface (MIPI) based display
interface. It supports the interface with the programmable logic (FPGA).

Signed-off-by: Venkateshwar Rao Gannavarapu <venkateshwar.rao.gannavarapu@xxxxxxxxxx>
---
 .../bindings/display/xlnx/xlnx,dsi-tx.yaml         | 105 +++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/xlnx/xlnx,dsi-tx.yaml

diff --git a/Documentation/devicetree/bindings/display/xlnx/xlnx,dsi-tx.yaml b/Documentation/devicetree/bindings/display/xlnx/xlnx,dsi-tx.yaml
new file mode 100644
index 0000000..8e23cf5
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/xlnx/xlnx,dsi-tx.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/xlnx/xlnx,dsi-tx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx DSI Transmitter subsystem
+
+maintainers:
+  - Venkateshwar Rao Gannavarapu <venkateshwar.rao.gannavarapu@xxxxxxxxxx>
+
+description: |
+  The Xilinx DSI Transmitter Subsystem implements the Mobile Industry
+  Processor Interface based display interface. It supports the interface
+  with the programmable logic (FPGA).
+
+  For more details refer to PG238 Xilinx MIPI DSI-V2.0 Tx Subsystem.
+
+properties:
+  compatible:
+    const: xlnx,dsi-tx-v2.0
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    description: List of clock specifiers
+    items:
+      - description: AXI Lite CPU clock
+      - description: D-phy clock
+
+  clock-names:
+    items:
+      - const: s_axis_aclk
+      - const: dphy_clk_200M
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        description:
+          Input port node to receive pixel data from the
+          display controller. Exactly one endpoint must be
+          specified.
+        properties:
+          endpoint:
+            $ref: /schemas/graph.yaml#/properties/endpoint
+            description: sub-node describing the input from CRTC
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          DSI output port node to the panel or the next bridge
+          in the chain
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    dsi_tx@80020000 {
+        compatible = "xlnx,dsi-tx-v2.0";
+        reg = <0x80020000 0x20000>;
+        clock-names = "s_axi_aclk", "dphy_clk_200M";
+        clocks = <&misc_clk_0>, <&misc_clk_1>;
+
+        panel@0 {
+                compatible = "auo,b101uan01";
+                reg = <0>;
+                port {
+                        panel_in: endpoint {
+                                remote-endpoint = <&mipi_dsi_out>;
+                        };
+                };
+        };
+
+        ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                        #size-cells = <0>;
+                        #address-cells = <1>;
+                        reg = <0>;
+                        mipi_dsi_in: endpoint@0 {
+                                reg = <0>;
+                                remote-endpoint = <&pl_disp_crtc>;
+                        };
+                };
+                port@1 {
+                        reg = <1>;
+                        mipi_dsi_out: endpoint {
+                                remote-endpoint = <&panel_in>;
+                        };
+                };
+        };
+    };
--
1.8.3.1