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1# SPDX-License-Identifier: GPL-2.02%YAML 1.23---4$id: http://devicetree.org/schemas/gnss/sirfstar.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: SiRFstar GNSS Receiver8 9maintainers:10 - Johan Hovold <johan@kernel.org>11 12description:13 The SiRFstar GNSS receivers have incarnated over the years in different14 chips, starting from the SiRFstarIII which was a chip that was introduced in15 2004 and used in a lot of dedicated GPS devices. In 2009 SiRF was acquired16 by CSR (Cambridge Silicon Radio) and in 2012 the CSR GPS business was17 acquired by Samsung, while some products remained with CSR. In 2014 CSR18 was acquired by Qualcomm who still sell some of the SiRF products.19 20 SiRF chips can be used over UART, I2C or SPI buses.21 22allOf:23 - $ref: gnss-common.yaml#24 - $ref: /schemas/serial/serial-peripheral-props.yaml#25 26properties:27 compatible:28 enum:29 - csr,gsd4t30 - csr,csrg05ta03-icje-r31 - fastrax,uc43032 - linx,r433 - wi2wi,w2sg000434 - wi2wi,w2sg0008i35 - wi2wi,w2sg0084i36 37 reg:38 description:39 The I2C Address, SPI chip select address. Not required on UART buses.40 41 vcc-supply:42 description:43 Main voltage regulator, pin names such as 3V3_IN, VCC, VDD.44 45 reset-gpios:46 maxItems: 147 description: An optional active low reset line, should be flagged with48 GPIO_ACTIVE_LOW.49 50 sirf,onoff-gpios:51 maxItems: 152 description: GPIO used to power on and off device, pin name ON_OFF.53 54 sirf,wakeup-gpios:55 maxItems: 156 description: GPIO used to determine device power state, pin names such57 as RFPWRUP, WAKEUP.58 59required:60 - compatible61 - vcc-supply62 63unevaluatedProperties: false64 65examples:66 - |67 #include <dt-bindings/gpio/gpio.h>68 serial {69 gnss {70 compatible = "wi2wi,w2sg0084i";71 vcc-supply = <&gnss_vcc_reg>;72 reset-gpios = <&gpio0 15 GPIO_ACTIVE_LOW>;73 sirf,onoff-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;74 sirf,wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;75 current-speed = <38400>;76 };77 };78