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Diffstat (limited to 'Documentation/devicetree/bindings/net/broadcom-bluetooth.txt')
-rw-r--r-- | Documentation/devicetree/bindings/net/broadcom-bluetooth.txt | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt b/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt new file mode 100644 index 000000000..a7d57ba5f --- /dev/null +++ b/Documentation/devicetree/bindings/net/broadcom-bluetooth.txt @@ -0,0 +1,56 @@ +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]; + }; +}; |