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linux-7.2.3/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml

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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/sprd/sprd,display-subsystem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc DRM master device
+
+maintainers:
+  - Kevin Tang <kevin.tang@unisoc.com>
+
+description: |
+  The Unisoc DRM master device is a virtual device needed to list all
+  DPU devices or other display interface nodes that comprise the
+  graphics subsystem.
+
+  Unisoc's display pipeline have several components as below description,
+  multi display controllers and corresponding physical interfaces.
+  For different display scenarios, dpu0 and dpu1 maybe binding to different
+  encoder.
+
+  E.g:
+  dpu0 and dpu1 both binding to DSI for dual mipi-dsi display;
+  dpu0 binding to DSI for primary display, and dpu1 binding to DP for external display;
+
+          +-----------------------------------------+
+          |                                         |
+          |                            +---------+  |
+  +----+  |   +----+    +---------+    |DPHY/CPHY|  |   +------+
+  |    +----->+dpu0+--->+MIPI|DSI +--->+Combo    +----->+Panel0|
+  |AXI |  |   +----+    +---------+    +---------+  |   +------+
+  |    |  |                  ^                      |
+  |    |  |                  |                      |
+  |    |  |      +-----------+                      |
+  |    |  |      |                                  |
+  |APB |  |   +--+-+    +-----------+    +---+      |   +------+
+  |    +----->+dpu1+--->+DisplayPort+--->+PHY+--------->+Panel1|
+  |    |  |   +----+    +-----------+    +---+      |   +------+
+  +----+  |                                         |
+          +-----------------------------------------+
+
+properties:
+  compatible:
+    const: sprd,display-subsystem
+
+  ports:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      maxItems: 1
+    description:
+      Should contain a list of phandles pointing to display interface port
+      of DPU devices.
+
+required:
+  - compatible
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    display-subsystem {
+        compatible = "sprd,display-subsystem";
+        ports = <&dpu_out>;
+    };

linux-7.2.3/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dpu.yaml

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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/sprd/sprd,sharkl3-dpu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc Sharkl3 Display Processor Unit (DPU)
+
+maintainers:
+  - Kevin Tang <kevin.tang@unisoc.com>
+
+description: |
+  DPU (Display Processor Unit) is the Display Controller for the Unisoc SoCs
+  which transfers the image data from a video memory buffer to an internal
+  LCD interface.
+
+properties:
+  compatible:
+    const: sprd,sharkl3-dpu
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: clk_src_128m
+      - const: clk_src_384m
+
+  power-domains:
+    maxItems: 1
+
+  iommus:
+    maxItems: 1
+
+  port:
+    type: object
+    description:
+      A port node with endpoint definitions as defined in
+      Documentation/devicetree/bindings/media/video-interfaces.txt.
+      That port should be the output endpoint, usually output to
+      the associated DSI.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/sprd,sc9860-clk.h>
+    dpu: dpu@63000000 {
+        compatible = "sprd,sharkl3-dpu";
+        reg = <0x63000000 0x1000>;
+        interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+        clock-names = "clk_src_128m", "clk_src_384m";
+
+        clocks = <&pll CLK_TWPLL_128M>,
+          <&pll CLK_TWPLL_384M>;
+
+        dpu_port: port {
+            dpu_out: endpoint {
+                remote-endpoint = <&dsi_in>;
+            };
+        };
+    };

linux-7.2.3/Documentation/devicetree/bindings/display/sprd/sprd,sharkl3-dsi-host.yaml

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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/sprd/sprd,sharkl3-dsi-host.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc MIPI DSI Controller
+
+maintainers:
+  - Kevin Tang <kevin.tang@unisoc.com>
+
+properties:
+  compatible:
+    const: sprd,sharkl3-dsi-host
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 2
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: clk_src_96m
+
+  power-domains:
+    maxItems: 1
+
+  ports:
+    type: object
+
+    properties:
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+      port@0:
+        type: object
+        description:
+          A port node with endpoint definitions as defined in
+          Documentation/devicetree/bindings/media/video-interfaces.txt.
+          That port should be the input endpoint, usually coming from
+          the associated DPU.
+
+    required:
+      - "#address-cells"
+      - "#size-cells"
+      - port@0
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/sprd,sc9860-clk.h>
+    dsi: dsi@63100000 {
+        compatible = "sprd,sharkl3-dsi-host";
+        reg = <0x63100000 0x1000>;
+        interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>,
+          <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+        clock-names = "clk_src_96m";
+        clocks = <&pll CLK_TWPLL_96M>;
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            port@0 {
+                reg = <0>;
+                dsi_in: endpoint {
+                    remote-endpoint = <&dpu_out>;
+                };
+            };
+        };
+    };