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Tom Rini53633a82024-02-29 12:33:36 -05001# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/gnss/brcm,bcm4751.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Broadcom BCM4751 family GNSS Receiver
8
9maintainers:
10 - Johan Hovold <johan@kernel.org>
11 - Linus Walleij <linus.walleij@linaro.org>
12
13description:
14 Broadcom GPS chips can be used over the UART or I2C bus. The UART
15 bus requires CTS/RTS support. The number of the capsule is more
16 elaborate than the compatibles BCM4751 may be printed
17 BCM4751IFBG for example.
18
19allOf:
20 - $ref: gnss-common.yaml#
21
22properties:
23 compatible:
24 enum:
25 - brcm,bcm4751
26 - brcm,bcm4752
27 - brcm,bcm4753
28
29 reg:
30 description:
31 The I2C Address, not required on UART buses.
32
33 vdd-auxin-supply:
34 description:
35 Main voltage supply, pin name VDD_AUXIN, typically connected
36 directly to a battery such as LiIon 3.8V battery or a 2.6V supply.
37
38 vddio-supply:
39 description:
40 IO voltage supply, pin name VDDIO, typically 1.8V
41
42 reset-gpios:
43 maxItems: 1
44 description: An optional active low reset line, should be flagged with
45 GPIO_ACTIVE_LOW.
46
47 enable-gpios:
48 description: Enable GPIO line, connected to pins named REGPU or NSTANDBY.
49 If the line is active low such as NSTANDBY, it should be tagged
50 GPIO_ACTIVE_LOW.
51
52required:
53 - compatible
54 - enable-gpios
55
56unevaluatedProperties: false
57
58examples:
59 - |
60 #include <dt-bindings/gpio/gpio.h>
61 serial {
62 gnss {
63 compatible = "brcm,bcm4751";
64 vdd-auxin-supply = <&vbat>;
65 reset-gpios = <&gpio0 15 GPIO_ACTIVE_LOW>;
66 enable-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
67 current-speed = <38400>;
68 };
69 };