Add bindings for Cadence HDP-TX HDMI PHY.

Signed-off-by: Sandor Yu <redacted>
---
 .../bindings/phy/cdns,hdptx-hdmi-phy.yaml     | 52 +++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/cdns,hdptx-hdmi-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/cdns,hdptx-hdmi-phy.yaml b/Documentation/devicetree/bindings/phy/cdns,hdptx-hdmi-phy.yaml
new file mode 100644
index 000000000000..99352e655eec
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/cdns,hdptx-hdmi-phy.yaml

@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/cdns,hdptx-hdmi-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cadence HDP-TX(HDMI/DisplayPort) PHY for HDMI protocol
+
+maintainers:
+  - Sandor Yu <sandor.yu@nxp.com>
+
+properties:
+  compatible:
+    enum:
+      - cdns,hdptx-hdmi-phy
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: PHY reference clock.
+      - description: APB clock.
+
+  clock-names:
+    items:
+      - const: refclk
+      - const: apbclk