media: dt-bindings: cec: convert common CEC properties to DT schema

Convert common HDMI CEC adapter bindings to DT schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/cec.txt

-Common bindings for HDMI CEC adapters
-
-- hdmi-phandle: phandle to the HDMI controller.
-
-- needs-hpd: if present the CEC support is only available when the HPD
-  is high. Some boards only let the CEC pin through if the HPD is high,
-  for example if there is a level converter that uses the HPD to power
-  up or down.

Documentation/devicetree/bindings/media/cec/cec-common.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/cec/cec-common.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HDMI CEC Adapters Common Properties
+
+maintainers:
+  - Hans Verkuil <hverkuil@xs4all.nl>
+
+properties:
+  $nodename:
+    pattern: "^cec(@[0-9a-f]+|-[0-9]+)?$"
+
+  hdmi-phandle:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the HDMI controller.
+
+  needs-hpd:
+    type: boolean
+    description:
+      The CEC support is only available when the HPD is high. Some boards only
+      let the CEC pin through if the HPD is high, for example if there is a
+      level converter that uses the HPD to power up or down.
+
+additionalProperties: true

MAINTAINERS

@@ -4834,7 +4834,7 @@ S:	Supported
 W:	http://linuxtv.org
 T:	git git://linuxtv.org/media_tree.git
 F:	Documentation/ABI/testing/debugfs-cec-error-inj
-F:	Documentation/devicetree/bindings/media/cec.txt
+F:	Documentation/devicetree/bindings/media/cec/cec-common.yaml
 F:	Documentation/driver-api/media/cec-core.rst
 F:	Documentation/userspace-api/media/cec
 F:	drivers/media/cec/