From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../allwinner,sun4i-a10-display-engine.yaml        | 117 +++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-engine.yaml

(limited to 'Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-engine.yaml')

diff --git a/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-engine.yaml b/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-engine.yaml
new file mode 100644
index 000000000..e6088f379
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/allwinner,sun4i-a10-display-engine.yaml
@@ -0,0 +1,117 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/allwinner,sun4i-a10-display-engine.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner A10 Display Engine Pipeline
+
+maintainers:
+  - Chen-Yu Tsai <wens@csie.org>
+  - Maxime Ripard <mripard@kernel.org>
+
+description: |
+  The display engine pipeline (and its entry point, since it can be
+  either directly the backend or the frontend) is represented as an
+  extra node.
+
+  The Allwinner A10 Display pipeline is composed of several components
+  that are going to be documented below:
+
+  For all connections between components up to the TCONs in the
+  display pipeline, when there are multiple components of the same
+  type at the same depth, the local endpoint ID must be the same as
+  the remote component's index. For example, if the remote endpoint is
+  Frontend 1, then the local endpoint ID must be 1.
+
+  Frontend 0  [0] ------- [0]  Backend 0  [0] ------- [0]  TCON 0
+              [1] --   -- [1]             [1] --   -- [1]
+                    \ /                         \ /
+                     X                           X
+                    / \                         / \
+              [0] --   -- [0]             [0] --   -- [0]
+  Frontend 1  [1] ------- [1]  Backend 1  [1] ------- [1]  TCON 1
+
+  For a two pipeline system such as the one depicted above, the lines
+  represent the connections between the components, while the numbers
+  within the square brackets corresponds to the ID of the local endpoint.
+
+  The same rule also applies to DE 2.0 mixer-TCON connections:
+
+  Mixer 0  [0] ----------- [0]  TCON 0
+           [1] ----   ---- [1]
+                   \ /
+                    X
+                   / \
+           [0] ----   ---- [0]
+  Mixer 1  [1] ----------- [1]  TCON 1
+
+properties:
+  compatible:
+    enum:
+      - allwinner,sun4i-a10-display-engine
+      - allwinner,sun5i-a10s-display-engine
+      - allwinner,sun5i-a13-display-engine
+      - allwinner,sun6i-a31-display-engine
+      - allwinner,sun6i-a31s-display-engine
+      - allwinner,sun7i-a20-display-engine
+      - allwinner,sun8i-a23-display-engine
+      - allwinner,sun8i-a33-display-engine
+      - allwinner,sun8i-a83t-display-engine
+      - allwinner,sun8i-h3-display-engine
+      - allwinner,sun8i-r40-display-engine
+      - allwinner,sun8i-v3s-display-engine
+      - allwinner,sun9i-a80-display-engine
+      - allwinner,sun20i-d1-display-engine
+      - allwinner,sun50i-a64-display-engine
+      - allwinner,sun50i-h6-display-engine
+
+  allwinner,pipelines:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    minItems: 1
+    maxItems: 2
+    items:
+      maxItems: 1
+    description: |
+      Available display engine frontends (DE 1.0) or mixers (DE
+      2.0/3.0) available.
+
+required:
+  - compatible
+  - allwinner,pipelines
+
+additionalProperties: false
+
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - allwinner,sun4i-a10-display-engine
+          - allwinner,sun6i-a31-display-engine
+          - allwinner,sun6i-a31s-display-engine
+          - allwinner,sun7i-a20-display-engine
+          - allwinner,sun8i-a83t-display-engine
+          - allwinner,sun8i-r40-display-engine
+          - allwinner,sun9i-a80-display-engine
+          - allwinner,sun20i-d1-display-engine
+          - allwinner,sun50i-a64-display-engine
+
+then:
+  properties:
+    allwinner,pipelines:
+      minItems: 2
+
+else:
+  properties:
+    allwinner,pipelines:
+      maxItems: 1
+
+examples:
+  - |
+      de: display-engine {
+          compatible = "allwinner,sun4i-a10-display-engine";
+          allwinner,pipelines = <&fe0>, <&fe1>;
+      };
+
+...
-- 
cgit v1.2.3