dt-bindings: net: ti,bluetooth: Convert to json-schema

Convert the Texas Instruments serial-attached bluetooth Device Tree
binding documentation to json-schema.

Add missing max-speed property.
Update the example.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: David Lechner <david@lechnology.com>
Link: https://lore.kernel.org/r/c1814db9aff7f09ea41b562a2da305312d8df2dd.1634646975.git.geert+renesas@glider.beSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/net/ti,bluetooth.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/ti,bluetooth.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments Bluetooth Chips
+
+maintainers:
+  - David Lechner <david@lechnology.com>
+
+description: |
+  This documents the binding structure and common properties for serial
+  attached TI Bluetooth devices. The following chips are included in this
+  binding:
+
+  * TI CC256x Bluetooth devices
+  * TI WiLink 7/8 (wl12xx/wl18xx) Shared Transport BT/FM/GPS devices
+
+  TI WiLink devices have a UART interface for providing Bluetooth, FM radio,
+  and GPS over what's called "shared transport". The shared transport is
+  standard BT HCI protocol with additional channels for the other functions.
+
+  TI WiLink devices also have a separate WiFi interface as described in
+  wireless/ti,wlcore.yaml.
+
+  This bindings follows the UART slave device binding in ../serial/serial.yaml.
+
+properties:
+  compatible:
+    enum:
+      - ti,cc2560
+      - ti,wl1271-st
+      - ti,wl1273-st
+      - ti,wl1281-st
+      - ti,wl1283-st
+      - ti,wl1285-st
+      - ti,wl1801-st
+      - ti,wl1805-st
+      - ti,wl1807-st
+      - ti,wl1831-st
+      - ti,wl1835-st
+      - ti,wl1837-st
+
+  enable-gpios:
+    maxItems: 1
+
+  vio-supply:
+    description: Vio input supply (1.8V)
+
+  vbat-supply:
+    description: Vbat input supply (2.9-4.8V)
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: ext_clock
+
+  max-speed: true
+
+  nvmem-cells:
+    maxItems: 1
+    description:
+      Nvmem data cell that contains a 6 byte BD address with the most
+      significant byte first (big-endian).
+
+  nvmem-cell-names:
+    items:
+      - const: bd-address
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    serial {
+            bluetooth {
+                    compatible = "ti,wl1835-st";
+                    enable-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
+                    clocks = <&clk32k_wl18xx>;
+                    clock-names = "ext_clock";
+                    nvmem-cells = <&bd_address>;
+                    nvmem-cell-names = "bd-address";
+            };
+    };

Documentation/devicetree/bindings/net/ti-bluetooth.txt

-Texas Instruments Bluetooth Chips
----------------------------------
-
-This documents the binding structure and common properties for serial
-attached TI Bluetooth devices. The following chips are included in this
-binding:
-
-* TI CC256x Bluetooth devices
-* TI WiLink 7/8 (wl12xx/wl18xx) Shared Transport BT/FM/GPS devices
-
-TI WiLink devices have a UART interface for providing Bluetooth, FM radio,
-and GPS over what's called "shared transport". The shared transport is
-standard BT HCI protocol with additional channels for the other functions.
-
-TI WiLink devices also have a separate WiFi interface as described in
-wireless/ti,wlcore.yaml.
-
-This bindings follows the UART slave device binding in ../serial/serial.yaml.
-
-Required properties:
- - compatible: should be one of the following:
-    "ti,cc2560"
-    "ti,wl1271-st"
-    "ti,wl1273-st"
-    "ti,wl1281-st"
-    "ti,wl1283-st"
-    "ti,wl1285-st"
-    "ti,wl1801-st"
-    "ti,wl1805-st"
-    "ti,wl1807-st"
-    "ti,wl1831-st"
-    "ti,wl1835-st"
-    "ti,wl1837-st"
-
-Optional properties:
- - enable-gpios : GPIO signal controlling enabling of BT. Active high.
- - vio-supply : Vio input supply (1.8V)
- - vbat-supply : Vbat input supply (2.9-4.8V)
- - clocks : Must contain an entry, for each entry in clock-names.
-   See ../clocks/clock-bindings.txt for details.
- - clock-names : Must include the following entry:
-   "ext_clock" (External clock provided to the TI combo chip).
- - nvmem-cells: phandle to nvmem data cell that contains a 6 byte BD address
-   with the most significant byte first (big-endian).
- - nvmem-cell-names: "bd-address" (required when nvmem-cells is specified)
-
-Example:
-
-&serial0 {
-	compatible = "ns16550a";
-	...
-	bluetooth {
-		compatible = "ti,wl1835-st";
-		enable-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
-		clocks = <&clk32k_wl18xx>;
-		clock-names = "ext_clock";
-		nvmem-cells = <&bd_address>;
-		nvmem-cell-names = "bd-address";
-	};
-};