1 files changed, 125 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-frontend.yaml b/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-frontend.yaml
new file mode 100644
index 000000000..98e8240a0
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-frontend.yaml
@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/allwinner,sun4i-a10-display-frontend.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner A10 Display Engine Frontend
+
+maintainers:
+  - Chen-Yu Tsai <wens@csie.org>
+  - Maxime Ripard <mripard@kernel.org>
+
+description: |
+  The display engine frontend does formats conversion, scaling,
+  deinterlacing and color space conversion.
+
+properties:
+  compatible:
+    enum:
+      - allwinner,sun4i-a10-display-frontend
+      - allwinner,sun5i-a13-display-frontend
+      - allwinner,sun6i-a31-display-frontend
+      - allwinner,sun7i-a20-display-frontend
+      - allwinner,sun8i-a23-display-frontend
+      - allwinner,sun8i-a33-display-frontend
+      - allwinner,sun9i-a80-display-frontend
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: The frontend interface clock
+      - description: The frontend module clock
+      - description: The frontend DRAM clock
+
+  clock-names:
+    items:
+      - const: ahb
+      - const: mod
+      - const: ram
+
+  # FIXME: This should be made required eventually once every SoC will
+  # have the MBUS declared.
+  interconnects:
+    maxItems: 1
+
+  # FIXME: This should be made required eventually once every SoC will
+  # have the MBUS declared.
+  interconnect-names:
+    const: dma-mem
+
+  resets:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: |
+          Input endpoints of the controller.
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: |
+          Output endpoints of the controller.
+
+    required:
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - resets
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/sun4i-a10-ccu.h>
+    #include <dt-bindings/reset/sun4i-a10-ccu.h>
+
+    fe0: display-frontend@1e00000 {
+        compatible = "allwinner,sun4i-a10-display-frontend";
+        reg = <0x01e00000 0x20000>;
+        interrupts = <47>;
+        clocks = <&ccu CLK_AHB_DE_FE0>, <&ccu CLK_DE_FE0>,
+                 <&ccu CLK_DRAM_DE_FE0>;
+        clock-names = "ahb", "mod",
+                      "ram";
+        resets = <&ccu RST_DE_FE0>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            fe0_out: port@1 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                reg = <1>;
+
+                fe0_out_be0: endpoint@0 {
+                    reg = <0>;
+                    remote-endpoint = <&be0_in_fe0>;
+                };
+
+                fe0_out_be1: endpoint@1 {
+                    reg = <1>;
+                    remote-endpoint = <&be1_in_fe0>;
+                };
+            };
+        };
+    };
+
+
+...