1*5505409eSLinus Walleij# SPDX-License-Identifier: GPL-2.0 2*5505409eSLinus Walleij%YAML 1.2 3*5505409eSLinus Walleij--- 4*5505409eSLinus Walleij$id: http://devicetree.org/schemas/gnss/sirfstar.yaml# 5*5505409eSLinus Walleij$schema: http://devicetree.org/meta-schemas/core.yaml# 6*5505409eSLinus Walleij 7*5505409eSLinus Walleijtitle: SiRFstar GNSS Receiver Device Tree Bindings 8*5505409eSLinus Walleij 9*5505409eSLinus Walleijmaintainers: 10*5505409eSLinus Walleij - Johan Hovold <johan@kernel.org> 11*5505409eSLinus Walleij 12*5505409eSLinus Walleijdescription: 13*5505409eSLinus Walleij The SiRFstar GNSS receivers have incarnated over the years in different 14*5505409eSLinus Walleij chips, starting from the SiRFstarIII which was a chip that was introduced in 15*5505409eSLinus Walleij 2004 and used in a lot of dedicated GPS devices. In 2009 SiRF was acquired 16*5505409eSLinus Walleij by CSR (Cambridge Silicon Radio) and in 2012 the CSR GPS business was 17*5505409eSLinus Walleij acquired by Samsung, while some products remained with CSR. In 2014 CSR 18*5505409eSLinus Walleij was acquired by Qualcomm who still sell some of the SiRF products. 19*5505409eSLinus Walleij 20*5505409eSLinus Walleij SiRF chips can be used over UART, I2C or SPI buses. 21*5505409eSLinus Walleij 22*5505409eSLinus WalleijallOf: 23*5505409eSLinus Walleij - $ref: gnss-common.yaml# 24*5505409eSLinus Walleij 25*5505409eSLinus Walleijproperties: 26*5505409eSLinus Walleij compatible: 27*5505409eSLinus Walleij enum: 28*5505409eSLinus Walleij - fastrax,uc430 29*5505409eSLinus Walleij - linx,r4 30*5505409eSLinus Walleij - wi2wi,w2sg0004 31*5505409eSLinus Walleij - wi2wi,w2sg0008i 32*5505409eSLinus Walleij - wi2wi,w2sg0084i 33*5505409eSLinus Walleij 34*5505409eSLinus Walleij reg: 35*5505409eSLinus Walleij description: 36*5505409eSLinus Walleij The I2C Address, SPI chip select address. Not required on UART buses. 37*5505409eSLinus Walleij 38*5505409eSLinus Walleij vcc-supply: 39*5505409eSLinus Walleij description: 40*5505409eSLinus Walleij Main voltage regulator, pin names such as 3V3_IN, VCC, VDD. 41*5505409eSLinus Walleij 42*5505409eSLinus Walleij sirf,onoff-gpios: 43*5505409eSLinus Walleij maxItems: 1 44*5505409eSLinus Walleij description: GPIO used to power on and off device, pin name ON_OFF. 45*5505409eSLinus Walleij 46*5505409eSLinus Walleij sirf,wakeup-gpios: 47*5505409eSLinus Walleij maxItems: 1 48*5505409eSLinus Walleij description: GPIO used to determine device power state, pin names such 49*5505409eSLinus Walleij as RFPWRUP, WAKEUP. 50*5505409eSLinus Walleij 51*5505409eSLinus Walleijrequired: 52*5505409eSLinus Walleij - compatible 53*5505409eSLinus Walleij - vcc-supply 54*5505409eSLinus Walleij 55*5505409eSLinus WalleijunevaluatedProperties: false 56*5505409eSLinus Walleij 57*5505409eSLinus Walleijexamples: 58*5505409eSLinus Walleij - | 59*5505409eSLinus Walleij #include <dt-bindings/gpio/gpio.h> 60*5505409eSLinus Walleij serial { 61*5505409eSLinus Walleij gnss { 62*5505409eSLinus Walleij compatible = "wi2wi,w2sg0084i"; 63*5505409eSLinus Walleij vcc-supply = <&gnss_vcc_reg>; 64*5505409eSLinus Walleij sirf,onoff-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>; 65*5505409eSLinus Walleij sirf,wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>; 66*5505409eSLinus Walleij current-speed = <38400>; 67*5505409eSLinus Walleij }; 68*5505409eSLinus Walleij }; 69