Convert the Socionext Milbeaut UART binding to DT schema. It is a
straight-forward conversion.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
 .../bindings/serial/milbeaut-uart.txt         | 21 -------
 .../serial/socionext,milbeaut-usio-uart.yaml  | 56 +++++++++++++++++++
 2 files changed, 56 insertions(+), 21 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/serial/milbeaut-uart.txt
 create mode 100644 Documentation/devicetree/bindings/serial/socionext,milbeaut-usio-uart.yaml

diff --git a/Documentation/devicetree/bindings/serial/milbeaut-uart.txt b/Documentation/devicetree/bindings/serial/milbeaut-uart.txt
deleted file mode 100644
index 3d2fb1a7ba94..000000000000
--- a/Documentation/devicetree/bindings/serial/milbeaut-uart.txt
+++ /dev/null

@@ -1,21 +0,0 @@
-Socionext Milbeaut UART controller
-
-Required properties:
-- compatible: should be "socionext,milbeaut-usio-uart".
-- reg: offset and length of the register set for the device.
-- interrupts: two interrupts specifier.
-- interrupt-names: should be "rx", "tx".
-- clocks: phandle to the input clock.
-
-Optional properties:
-- auto-flow-control: flow control enable.
-
-Example:
-       usio1: usio_uart@1e700010 {
-               compatible = "socionext,milbeaut-usio-uart";
-               reg = <0x1e700010 0x10>;
-               interrupts = <0 141 0x4>, <0 149 0x4>;
-               interrupt-names = "rx", "tx";
-               clocks = <&clk 2>;
-               auto-flow-control;
-       };

diff --git a/Documentation/devicetree/bindings/serial/socionext,milbeaut-usio-uart.yaml b/Documentation/devicetree/bindings/serial/socionext,milbeaut-usio-uart.yaml
new file mode 100644
index 000000000000..37db6459b67a
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/socionext,milbeaut-usio-uart.yaml

@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/socionext,milbeaut-usio-uart.yaml#