Commit 176193b7 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
Browse files

dt-bindings: gnss: add sirfstar binding 



Add binding for SiRFstar-based GNSS receivers.

Note that while four compatible-strings are initially added representing
devices which differ in which I/O interfaces they support, they
otherwise essentially share the same feature set.

Pin and supply names vary slightly, as do some recommended timings.

Note that the wakeup gpio is not intended to be used as a wakeup source,
but rather to detect the current power state of the device (active or
hibernate).

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1ad69f10

Documentation/devicetree/bindings/gnss/sirfstar.txt

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SiRFstar-based GNSS Receiver DT binding



SiRFstar chipsets are used in GNSS-receiver modules produced by several

vendors and can use UART, SPI or I2C interfaces.



Please see Documentation/devicetree/bindings/gnss/gnss.txt for generic

properties.



Required properties:



- compatible	: Must be one of



			"fastrax,uc430"

			"linx,r4"

			"wi2wi,w2sg0008i"

			"wi2wi,w2sg0084i"



- vcc-supply	: Main voltage regulator (pin name: 3V3_IN, VCC, VDD)



Required properties (I2C):

- reg		: I2C slave address



Required properties (SPI):

- reg		: SPI chip select address



Optional properties:



- sirf,onoff-gpios	: GPIO used to power on and off device (pin name: ON_OFF)

- sirf,wakeup-gpios	: GPIO used to determine device power state

			  (pin name: RFPWRUP, WAKEUP)

- timepulse-gpios	: Time pulse GPIO (pin name: 1PPS, TM)



Example:



serial@1234 {

	compatible = "ns16550a";



	gnss {

		compatible = "wi2wi,w2sg0084i";



		vcc-supply = <&gnss_reg>;

		sirf,onoff-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;

		sirf,wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;

	};

};

Documentation/devicetree/bindings/vendor-prefixes.txt

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@@ -124,6 +124,7 @@ excito Excito 
ezchip	EZchip Semiconductor

fairphone	Fairphone B.V.

faraday	Faraday Technology Corporation

fastrax	Fastrax Oy

fcs	Fairchild Semiconductor

firefly	Firefly

focaltech	FocalTech Systems Co.,Ltd
@@ -203,6 +204,7 @@ licheepi Lichee Pi 
linaro	Linaro Limited

linksys	Belkin International, Inc. (Linksys)

linux	Linux-specific binding

linx	Linx Technologies

lltc	Linear Technology Corporation

logicpd	Logic PD, Inc.

lsi	LSI Corp. (LSI Logic)

Documentation/devicetree/bindings/vendor-prefixes.txt.rej

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--- Documentation/devicetree/bindings/vendor-prefixes.txt

+++ Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -395,6 +397,7 @@ vot	Vision Optical Technology Co., Ltd.

 wd	Western Digital Corp.

 wetek	WeTek Electronics, limited.

 wexler	Wexler

+wi2wi	Wi2Wi, Inc.

 winbond Winbond Electronics corp.

 winstar	Winstar Display Corp.

 wlf	Wolfson Microelectronics

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