1 Generic Bluetooth controller over USB (btusb d 1 Generic Bluetooth controller over USB (btusb driver)
2 ---------------------------------------------- 2 ---------------------------------------------------
3 3
4 Required properties: 4 Required properties:
5 5
6 - compatible : should comply with the format 6 - compatible : should comply with the format "usbVID,PID" specified in
7 Documentation/devicetree/bind 7 Documentation/devicetree/bindings/usb/usb-device.yaml
8 At the time of writing, the o 8 At the time of writing, the only OF supported devices
9 (more may be added later) are 9 (more may be added later) are:
10 10
11 "usb1286,204e" (Marvell 8997 11 "usb1286,204e" (Marvell 8997)
12 "usbcf3,e300" (Qualcomm QCA6 12 "usbcf3,e300" (Qualcomm QCA6174A)
13 "usb4ca,301a" (Qualcomm QCA6 13 "usb4ca,301a" (Qualcomm QCA6174A (Lite-On))
14 14
15 15
16 Also, vendors that use btusb may have device a 16 Also, vendors that use btusb may have device additional properties, e.g:
17 Documentation/devicetree/bindings/net/marvell- 17 Documentation/devicetree/bindings/net/marvell-bt-8xxx.txt
18 18
19 Optional properties: 19 Optional properties:
20 20
21 - interrupt-names: (see below) 21 - interrupt-names: (see below)
22 - interrupts : The interrupt specified by th 22 - interrupts : The interrupt specified by the name "wakeup" is the interrupt
23 that shall be used for out-of 23 that shall be used for out-of-band wake-on-bt. Driver will
24 request this interrupt for wa 24 request this interrupt for wakeup. During system suspend, the
25 irq will be enabled so that t 25 irq will be enabled so that the bluetooth chip can wakeup host
26 platform out of band. During 26 platform out of band. During system resume, the irq will be
27 disabled to make sure unneces 27 disabled to make sure unnecessary interrupt is not received.
28 28
29 Example: 29 Example:
30 30
31 Following example uses irq pin number 3 of gpi 31 Following example uses irq pin number 3 of gpio0 for out of band wake-on-bt:
32 32
33 &usb_host1_ehci { 33 &usb_host1_ehci {
34 #address-cells = <1>; 34 #address-cells = <1>;
35 #size-cells = <0>; 35 #size-cells = <0>;
36 36
37 mvl_bt1: bt@1 { 37 mvl_bt1: bt@1 {
38 compatible = "usb1286,204e"; 38 compatible = "usb1286,204e";
39 reg = <1>; 39 reg = <1>;
40 interrupt-parent = <&gpio0>; 40 interrupt-parent = <&gpio0>;
41 interrupt-names = "wakeup"; 41 interrupt-names = "wakeup";
42 interrupts = <3 IRQ_TYPE_LEVEL_LOW>; 42 interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
43 }; 43 };
44 }; 44 };
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