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+Broadcom Bluetooth Chips
+---------------------
+
+This documents the binding structure and common properties for serial
+attached Broadcom devices.
+
+Serial attached Broadcom devices shall be a child node of the host UART
+device the slave device is attached to.
+
+Required properties:
+
+ - compatible: should contain one of the following:
+ * "brcm,bcm20702a1"
+ * "brcm,bcm4329-bt"
+ * "brcm,bcm4330-bt"
+ * "brcm,bcm43438-bt"
+ * "brcm,bcm4345c5"
+ * "brcm,bcm43540-bt"
+ * "brcm,bcm4335a0"
+
+Optional properties:
+
+ - max-speed: see Documentation/devicetree/bindings/serial/serial.yaml
+ - shutdown-gpios: GPIO specifier, used to enable the BT module
+ - device-wakeup-gpios: GPIO specifier, used to wakeup the controller
+ - host-wakeup-gpios: GPIO specifier, used to wakeup the host processor.
+ deprecated, replaced by interrupts and
+ "host-wakeup" interrupt-names
+ - clocks: 1 or 2 clocks as defined in clock-names below, in that order
+ - clock-names: names for clock inputs, matching the clocks given
+ - "extclk": deprecated, replaced by "txco"
+ - "txco": external reference clock (not a standalone crystal)
+ - "lpo": external low power 32.768 kHz clock
+ - vbat-supply: phandle to regulator supply for VBAT
+ - vddio-supply: phandle to regulator supply for VDDIO
+ - brcm,bt-pcm-int-params: configure PCM parameters via a 5-byte array
+ - sco-routing: 0 = PCM, 1 = Transport, 2 = Codec, 3 = I2S
+ - pcm-interface-rate: 128KBps, 256KBps, 512KBps, 1024KBps, 2048KBps
+ - pcm-frame-type: short, long
+ - pcm-sync-mode: slave, master
+ - pcm-clock-mode: slave, master
+ - interrupts: must be one, used to wakeup the host processor
+ - interrupt-names: must be "host-wakeup"
+
+Example:
+
+&uart2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart2_pins>;
+
+ bluetooth {
+ compatible = "brcm,bcm43438-bt";
+ max-speed = <921600>;
+ brcm,bt-pcm-int-params = [01 02 00 01 01];
+ };
+};