77 lines
2.0 KiB
YAML
77 lines
2.0 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/gnss/sirfstar.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: SiRFstar GNSS Receiver
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maintainers:
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- Johan Hovold <johan@kernel.org>
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description:
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The SiRFstar GNSS receivers have incarnated over the years in different
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chips, starting from the SiRFstarIII which was a chip that was introduced in
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2004 and used in a lot of dedicated GPS devices. In 2009 SiRF was acquired
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by CSR (Cambridge Silicon Radio) and in 2012 the CSR GPS business was
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acquired by Samsung, while some products remained with CSR. In 2014 CSR
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was acquired by Qualcomm who still sell some of the SiRF products.
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SiRF chips can be used over UART, I2C or SPI buses.
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allOf:
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- $ref: gnss-common.yaml#
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properties:
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compatible:
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enum:
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- csr,gsd4t
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- csr,csrg05ta03-icje-r
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- fastrax,uc430
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- linx,r4
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- wi2wi,w2sg0004
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- wi2wi,w2sg0008i
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- wi2wi,w2sg0084i
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reg:
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description:
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The I2C Address, SPI chip select address. Not required on UART buses.
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vcc-supply:
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description:
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Main voltage regulator, pin names such as 3V3_IN, VCC, VDD.
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reset-gpios:
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maxItems: 1
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description: An optional active low reset line, should be flagged with
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GPIO_ACTIVE_LOW.
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sirf,onoff-gpios:
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maxItems: 1
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description: GPIO used to power on and off device, pin name ON_OFF.
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sirf,wakeup-gpios:
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maxItems: 1
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description: GPIO used to determine device power state, pin names such
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as RFPWRUP, WAKEUP.
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required:
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- compatible
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- vcc-supply
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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serial {
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gnss {
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compatible = "wi2wi,w2sg0084i";
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vcc-supply = <&gnss_vcc_reg>;
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reset-gpios = <&gpio0 15 GPIO_ACTIVE_LOW>;
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sirf,onoff-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
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sirf,wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;
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current-speed = <38400>;
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};
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};
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