[PATCH 30/42] dt-bindings: display: mediatek: Introduce MT8196 Output Processor

[AngeloGioacchino Del Regno]

Add documentation for the Overlay Output Processor IP found in
the newer Generation SoCs like MT8196, MT8894, MT6991, and their
variants.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
---
 .../mediatek/mediatek,mt8196-outproc.yaml     | 107 ++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-outproc.yaml

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-outproc.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-outproc.yaml
new file mode 100644
index 000000000000..634107db269c
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-outproc.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/mediatek/mediatek,mt8196-outproc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Display Overlay Output Processor
+
+maintainers:
+  - AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
+
+description:
+  The MediaTek Display Overlay Output Processor hardware handles the
+  post-stage of pixel processing in the layer overlaying process and
+  is also capable of performing gamma correction, ensuring that the
+  per-pixel values are within the expected luma range.
+  If an instance of this hardware is configured as last stage, it is
+  also capable of generating VBlank (Frame Done) events which can be
+  then dispatched either via an interrupt (to the CPU) or through a
+  Global Command Engine (GCE) Event, internally sent to programmable
+  Command Queue (CMDQ) Engine(s) for offloading purposes.
+
+properties:
+  compatible:
+    - const: mediatek,mt8196-disp-outproc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    description: Optional VBlank event interrupt
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port at 0:
+        $ref: /schemas/graph.yaml#/properties/port
+
+      port at 1:
+        $ref: /schemas/graph.yaml#/properties/port
+
+    required:
+      - port at 0
+      - port at 1
+
+  trigger-sources:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/mediatek,mt8196-clock.h>
+    #include <dt-bindings/power/mediatek,mt8196-power.h>
+
+    outproc at 32970000 {
+        compatible = "mediatek,mt8196-disp-outproc";
+        reg = <0x32970000 0x1000>;
+        clocks = <&ovlsys0 CLK_OVL_OUTPROC0>;
+        power-domains = <&hpm_hwv MT8196_POWER_DOMAIN_OVL0_DORMANT>;
+        trigger-sources = <&ovl0_mutex 20>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port at 0 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                reg = <0>;
+
+                endpoint at 0 {
+                    reg = <0>;
+                    remote-endpoint = <&blender0_8_out>;
+                };
+            };
+
+            port at 1 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                reg = <1>;
+
+                endpoint at 0 {
+                    reg = <0>;
+                    remote-endpoint = <&ovl0_directlink_out_relay6>;
+                };
+            };
+        };
+    };
+
+...
-- 
2.54.0