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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];
- };
-};