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Commit 0065d1c5 authored by Xinming Hu's avatar Xinming Hu Committed by Marcel Holtmann
Browse files

dt: bindings: add MARVELL's bt-sd8xxx wireless device 



Add device tree binding documentation for MARVELL's bluetooth sdio
(sd8897 and sd8997) chip.

Signed-off-by: default avatarXinming Hu <huxm@marvell.com>
Signed-off-by: default avatarAmitkumar Karwar <akarwar@marvell.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 582a1db9

Documentation/devicetree/bindings/btmrvl.txt

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btmrvl

------



Required properties:



  - compatible : must be "btmrvl,cfgdata"



Optional properties:



  - btmrvl,cal-data : Calibration data downloaded to the device during

		      initialization. This is an array of 28 values(u8).



  - btmrvl,gpio-gap : gpio and gap (in msecs) combination to be

		      configured.



Example:



GPIO pin 13 is configured as a wakeup source and GAP is set to 100 msecs

in below example.



btmrvl {

	compatible = "btmrvl,cfgdata";



	btmrvl,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>;

	btmrvl,gpio-gap = <0x0d64>;

};

Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt

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Marvell 8897/8997 (sd8897/sd8997) bluetooth SDIO devices

------



Required properties:



  - compatible : should be one of the following:

	* "marvell,sd8897-bt"

	* "marvell,sd8997-bt"



Optional properties:



  - marvell,cal-data: Calibration data downloaded to the device during

		      initialization. This is an array of 28 values(u8).



  - marvell,wakeup-pin: It represents wakeup pin number of the bluetooth chip.

		        firmware will use the pin to wakeup host system.

  - 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.

  - interrupt-parent: phandle of the parent interrupt controller

  - interrupts : interrupt pin number to the cpu. 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 condition. 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.

calibration data is also available in below example.



&mmc3 {

	status = "okay";

	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 = <0x0d>;

		marvell,wakeup-gap-ms = <0x64>;

	};

};