dt-bindings: misc: convert pvpanic-mmio binding to YAML

deleted file mode 100644
index 985e90736780..000000000000
@@ -1,29 +0,0 @@
-* QEMU PVPANIC MMIO Configuration bindings
-
-QEMU's emulation / virtualization targets provide the following PVPANIC
-MMIO Configuration interface on the "virt" machine.
-type:
-
-- a read-write, 16-bit wide data register.
-
-QEMU exposes the data register to guests as memory mapped registers.
-
-Required properties:
-
-- compatible: "qemu,pvpanic-mmio".
-- reg: the MMIO region used by the device.
-  * Bytes 0x0  Write panic event to the reg when guest OS panics.
-  * Bytes 0x1  Reserved.
-
-Example:
-
-/ {
-        #size-cells = <0x2>;
-        #address-cells = <0x2>;
-
-        pvpanic-mmio@9060000 {
-                compatible = "qemu,pvpanic-mmio";
-                reg = <0x0 0x9060000 0x0 0x2>;
-        };
-};
-

new file mode 100644
index 000000000000..fe24bdcacc9c
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/qemu,pvpanic-mmio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: QEMU PVPANIC MMIO device
+
+description:
+  QEMU provides a pvpanic MMIO interface for guest panic notification.
+
+maintainers:
+  - Peng Hao <[email protected]>
+
+properties:
+  compatible:
+    const: qemu,pvpanic-mmio
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    pvpanic@9060000 {
+      compatible = "qemu,pvpanic-mmio";
+      reg = <0x9060000 0x2>;
+    };
+