diff --git a/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt b/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt
deleted file mode 100644
index 8b2b0460259a7..0000000000000
--- a/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.txt
+++ /dev/null
@@ -1,36 +0,0 @@
-* BCM63xx UART
-
-Required properties:
-
-- compatible: "brcm,bcm6345-uart"
-
-- reg: The base address of the UART register bank.
-
-- interrupts: A single interrupt specifier.
-
-- clocks: Clock driving the hardware; used to figure out the baud rate
-  divisor.
-
-
-Optional properties:
-
-- clock-names: Should be "refclk".
-
-Example:
-
-	uart0: serial@14e00520 {
-		compatible = "brcm,bcm6345-uart";
-		reg = <0x14e00520 0x18>;
-		interrupt-parent = <&periph_intc>;
-		interrupts = <2>;
-		clocks = <&periph_clk>;
-		clock-names = "refclk";
-	};
-
-	clocks {
-		periph_clk: periph_clk@0 {
-			compatible = "fixed-clock";
-			#clock-cells = <0>;
-			clock-frequency = <54000000>;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.yaml b/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.yaml
new file mode 100644
index 0000000000000..a22285c43f809
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/brcm,bcm6345-uart.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/brcm,bcm6345-uart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: BCM63xx UART
+
+maintainers:
+  - Rafał Miłecki <rafal@milecki.pl>
+
+allOf:
+  - $ref: serial.yaml#
+
+properties:
+  compatible:
+    const: brcm,bcm6345-uart
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    const: refclk
+
+unevaluatedProperties: false
+
+required:
+  - reg
+  - interrupts
+  - clocks
+
+examples:
+  - |
+    serial@14e00520 {
+        compatible = "brcm,bcm6345-uart";
+        reg = <0x14e00520 0x18>;
+        interrupt-parent = <&periph_intc>;
+        interrupts = <2>;
+        clocks = <&periph_clk>;
+        clock-names = "refclk";
+    };