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45 lines
1.4 KiB
45 lines
1.4 KiB
3 years ago
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Generic Bluetooth controller over USB (btusb driver)
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---------------------------------------------------
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Required properties:
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- compatible : should comply with the format "usbVID,PID" specified in
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Documentation/devicetree/bindings/usb/usb-device.yaml
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At the time of writing, the only OF supported devices
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(more may be added later) are:
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"usb1286,204e" (Marvell 8997)
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"usbcf3,e300" (Qualcomm QCA6174A)
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"usb4ca,301a" (Qualcomm QCA6174A (Lite-On))
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Also, vendors that use btusb may have device additional properties, e.g:
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Documentation/devicetree/bindings/net/marvell-bt-8xxx.txt
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Optional properties:
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- interrupt-names: (see below)
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- interrupts : The interrupt specified by the name "wakeup" is the interrupt
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that shall be used for out-of-band wake-on-bt. Driver will
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request this interrupt for wakeup. During system suspend, the
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irq will be enabled so that the bluetooth chip can wakeup host
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platform out of band. During system resume, the irq will be
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disabled to make sure unnecessary interrupt is not received.
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Example:
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Following example uses irq pin number 3 of gpio0 for out of band wake-on-bt:
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&usb_host1_ehci {
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#address-cells = <1>;
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#size-cells = <0>;
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mvl_bt1: bt@1 {
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compatible = "usb1286,204e";
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reg = <1>;
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interrupt-parent = <&gpio0>;
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interrupt-names = "wakeup";
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interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
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};
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};
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