dt-bindings: display: imx: Add television encoder (TVE) for imx53

Add television encoder (TVE) for legacy i.MX53 (over 15 years) to fix below
DTB_CHECK warnings:
  arch/arm/boot/dts/nxp/imx/imx53-ard.dtb: /soc/bus@60000000/tve@63ff0000: failed to match any schema with compatible: ['fsl,imx53-tve']

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260521193734.1496372-1-Frank.Li@oss.nxp.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Documentation/devicetree/bindings/display/imx/fsl,imx53-tve.yaml

@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx53-tve.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX53 Television Encoder (TVE)
+
+maintainers:
+  - Frank Li <Frank.Li@nxp.com>
+
+description:
+  The Television Encoder (TVE) is a hardware block in the i.MX53 SoC that
+  converts digital video data into analog TV signals (NTSC/PAL).
+
+properties:
+  compatible:
+    const: fsl,imx53-tve
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: TVE gate clock
+      - description: Display interface selector clock
+
+  clock-names:
+    items:
+      - const: tve
+      - const: di_sel
+
+  ddc-i2c-bus:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the I2C bus used for DDC (Display Data Channel) communication
+      to read EDID information from the connected display.
+
+  dac-supply:
+    description:
+      Regulator supply for the TVE DAC (Digital-to-Analog Converter).
+
+  fsl,tve-mode:
+    $ref: /schemas/types.yaml#/definitions/string
+    description:
+      TVE output mode selection.
+    enum:
+      - ntsc
+      - pal
+      - vga
+
+  fsl,hsync-pin:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Pin number for horizontal sync signal in VGA mode.
+    minimum: 0
+    maximum: 8
+
+  fsl,vsync-pin:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Pin number for vertical sync signal in VGA mode.
+    minimum: 0
+    maximum: 8
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description:
+      Port node with one endpoint connected to the IPU display interface.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - fsl,tve-mode
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx5-clock.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    tve@63ff0000 {
+        compatible = "fsl,imx53-tve";
+        reg = <0x63ff0000 0x1000>;
+        interrupts = <92>;
+        clocks = <&clks IMX5_CLK_TVE_GATE>,
+                 <&clks IMX5_CLK_IPU_DI1_SEL>;
+        clock-names = "tve", "di_sel";
+        fsl,tve-mode = "vga";
+
+        port {
+            endpoint {
+                remote-endpoint = <&ipu_di1_tve>;
+            };
+        };
+    };
+