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[4/7] dt-bindings: display: allwinner: Add DE33 planes

Message ID 20251115141347.13087-5-jernej.skrabec@gmail.com (mailing list archive)
State New
Headers
Series drm/sun4i: update DE33 support |

Commit Message

Jernej Skrabec Nov. 15, 2025, 2:13 p.m. UTC 
Allwinner Display Engine 3.3 contains planes, which are shared resources
between all mixers present in SoC. They can be assigned to specific
mixer by using registers which reside in display clocks MMIO.

Add a binding for them.

Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
 .../allwinner,sun50i-h616-de33-planes.yaml    | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/allwinner,sun50i-h616-de33-planes.yaml
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/allwinner,sun50i-h616-de33-planes.yaml b/Documentation/devicetree/bindings/display/allwinner,sun50i-h616-de33-planes.yaml
new file mode 100644
index 000000000000..801e5068a6b5
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/allwinner,sun50i-h616-de33-planes.yaml
@@ -0,0 +1,44 @@ 
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/allwinner,sun50i-h616-de33-planes.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner H616 Display Engine 3.3 planes
+
+maintainers:
+  - Jernej Skrabec <jernej.skrabec@gmail.com>
+
+description: |
+  Display Engine 3.3 planes are independent of mixers, contrary to
+  previous generations of Display Engine. Planes can be assigned to
+  mixers independently and even dynamically during runtime.
+
+properties:
+  compatible:
+    enum:
+      - allwinner,sun50i-h616-de33-planes
+
+  reg:
+    maxItems: 1
+
+  allwinner,plane-mapping:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Phandle of Display Engine clock node
+
+required:
+  - compatible
+  - reg
+  - allwinner,plane-mapping
+
+additionalProperties: false
+
+examples:
+  - |
+    planes: planes@100000 {
+        compatible = "allwinner,sun50i-h616-de33-planes";
+        reg = <0x100000 0x180000>;
+        allwinner,plane-mapping = <&display_clocks>;
+    };
+
+...