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| -rw-r--r-- | Documentation/devicetree/bindings/net/marvell-bt-8xxx.txt | 83 |
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diff --git a/Documentation/devicetree/bindings/net/marvell-bt-8xxx.txt b/Documentation/devicetree/bindings/net/marvell-bt-8xxx.txt new file mode 100644 index 000000000..957e5e5c2 --- /dev/null +++ b/Documentation/devicetree/bindings/net/marvell-bt-8xxx.txt @@ -0,0 +1,83 @@ +Marvell 8897/8997 (sd8897/sd8997) bluetooth devices (SDIO or USB based) +------ +The 8997 devices supports multiple interfaces. When used on SDIO interfaces, +the btmrvl driver is used and when used on USB interface, the btusb driver is +used. + +Required properties: + + - compatible : should be one of the following: + * "marvell,sd8897-bt" (for SDIO) + * "marvell,sd8997-bt" (for SDIO) + * "usb1286,204e" (for USB) + +Optional properties: + + - marvell,cal-data: Calibration data downloaded to the device during + initialization. This is an array of 28 values(u8). + This is only applicable to SDIO devices. + + - marvell,wakeup-pin: It represents wakeup pin number of the bluetooth chip. + firmware will use the pin to wakeup host system (u16). + - marvell,wakeup-gap-ms: wakeup gap represents wakeup latency of the host + platform. The value will be configured to firmware. This + is needed to work chip's sleep feature as expected (u16). + - interrupt-names: Used only for USB based devices (See below) + - interrupts : specifies the interrupt pin number to the cpu. For SDIO, the + driver will use the first interrupt specified in the interrupt + array. For USB based devices, the driver will use the interrupt + named "wakeup" from the interrupt-names and interrupt arrays. + The driver will request an irq based on this interrupt number. + During system suspend, the irq will be enabled so that the + bluetooth chip can wakeup host platform under certain + conditions. During system resume, the irq will be disabled + to make sure unnecessary interrupt is not received. + +Example: + +IRQ pin 119 is used as system wakeup source interrupt. +wakeup pin 13 and gap 100ms are configured so that firmware can wakeup host +using this device side pin and wakeup latency. + +Example for SDIO device follows (calibration data is also available in +below example). + +&mmc3 { + vmmc-supply = <&wlan_en_reg>; + bus-width = <4>; + cap-power-off-card; + keep-power-in-suspend; + + #address-cells = <1>; + #size-cells = <0>; + btmrvl: bluetooth@2 { + compatible = "marvell,sd8897-bt"; + reg = <2>; + interrupt-parent = <&pio>; + interrupts = <119 IRQ_TYPE_LEVEL_LOW>; + + marvell,cal-data = /bits/ 8 < + 0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02 + 0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00 + 0x00 0x00 0xf0 0x00>; + marvell,wakeup-pin = /bits/ 16 <0x0d>; + marvell,wakeup-gap-ms = /bits/ 16 <0x64>; + }; +}; + +Example for USB device: + +&usb_host1_ohci { + #address-cells = <1>; + #size-cells = <0>; + + mvl_bt1: bt@1 { + compatible = "usb1286,204e"; + reg = <1>; + interrupt-parent = <&gpio0>; + interrupt-names = "wakeup"; + interrupts = <119 IRQ_TYPE_LEVEL_LOW>; + marvell,wakeup-pin = /bits/ 16 <0x0d>; + marvell,wakeup-gap-ms = /bits/ 16 <0x64>; + }; +}; |