| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/gnss/sirfstar.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: SiRFstar GNSS Receiver |
| 8 | |
| 9 | maintainers: |
| 10 | - Johan Hovold <johan@kernel.org> |
| 11 | |
| 12 | description: |
| 13 | The SiRFstar GNSS receivers have incarnated over the years in different |
| 14 | chips, starting from the SiRFstarIII which was a chip that was introduced in |
| 15 | 2004 and used in a lot of dedicated GPS devices. In 2009 SiRF was acquired |
| 16 | by CSR (Cambridge Silicon Radio) and in 2012 the CSR GPS business was |
| 17 | acquired by Samsung, while some products remained with CSR. In 2014 CSR |
| 18 | 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 | |
| 22 | allOf: |
| 23 | - $ref: gnss-common.yaml# |
| 24 | |
| 25 | properties: |
| 26 | compatible: |
| 27 | enum: |
| 28 | - csr,gsd4t |
| 29 | - csr,csrg05ta03-icje-r |
| 30 | - fastrax,uc430 |
| 31 | - linx,r4 |
| 32 | - wi2wi,w2sg0004 |
| 33 | - wi2wi,w2sg0008i |
| 34 | - wi2wi,w2sg0084i |
| 35 | |
| 36 | reg: |
| 37 | description: |
| 38 | The I2C Address, SPI chip select address. Not required on UART buses. |
| 39 | |
| 40 | vcc-supply: |
| 41 | description: |
| 42 | Main voltage regulator, pin names such as 3V3_IN, VCC, VDD. |
| 43 | |
| 44 | reset-gpios: |
| 45 | maxItems: 1 |
| 46 | description: An optional active low reset line, should be flagged with |
| 47 | GPIO_ACTIVE_LOW. |
| 48 | |
| 49 | sirf,onoff-gpios: |
| 50 | maxItems: 1 |
| 51 | description: GPIO used to power on and off device, pin name ON_OFF. |
| 52 | |
| 53 | sirf,wakeup-gpios: |
| 54 | maxItems: 1 |
| 55 | description: GPIO used to determine device power state, pin names such |
| 56 | as RFPWRUP, WAKEUP. |
| 57 | |
| 58 | required: |
| 59 | - compatible |
| 60 | - vcc-supply |
| 61 | |
| 62 | unevaluatedProperties: false |
| 63 | |
| 64 | examples: |
| 65 | - | |
| 66 | #include <dt-bindings/gpio/gpio.h> |
| 67 | serial { |
| 68 | gnss { |
| 69 | compatible = "wi2wi,w2sg0084i"; |
| 70 | vcc-supply = <&gnss_vcc_reg>; |
| 71 | reset-gpios = <&gpio0 15 GPIO_ACTIVE_LOW>; |
| 72 | sirf,onoff-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>; |
| 73 | sirf,wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>; |
| 74 | current-speed = <38400>; |
| 75 | }; |
| 76 | }; |