xref: /linux/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml (revision e1c4c5436b4ad579762fbe78bfabc8aef59bd5b1) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/iio/imu/adi,adis16480.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Analog Devices ADIS16480 and similar IMUs
8
9maintainers:
10  - Alexandru Tachici <alexandru.tachici@analog.com>
11
12properties:
13  compatible:
14    enum:
15      - adi,adis16375
16      - adi,adis16480
17      - adi,adis16485
18      - adi,adis16488
19      - adi,adis16490
20      - adi,adis16495-1
21      - adi,adis16495-2
22      - adi,adis16495-3
23      - adi,adis16497-1
24      - adi,adis16497-2
25      - adi,adis16497-3
26
27  reg:
28    maxItems: 1
29
30  interrupts:
31    minItems: 1
32    maxItems: 2
33    description: |
34      Accepted interrupt types are:
35      * IRQ_TYPE_EDGE_RISING
36      * IRQ_TYPE_EDGE_FALLING
37
38  interrupt-names:
39    minItems: 1
40    maxItems: 2
41    description:
42      Default if not supplied is DIO1.
43    items:
44      enum:
45        - DIO1
46        - DIO2
47        - DIO3
48        - DIO4
49
50  spi-cpha: true
51  spi-cpol: true
52
53  reset-gpios:
54    maxItems: 1
55    description: Connected to RESET pin which is active low.
56
57  clocks:
58    maxItems: 1
59    description: If not provided, then the internal clock is used.
60
61  clock-names:
62    description: |
63      sync: In sync mode, the internal clock is disabled and the frequency
64            of the external clock signal establishes therate of data
65            collection and processing. See Fig 14 and 15 in the datasheet.
66            The clock-frequency must be:
67            * 3000 to 4500 Hz for adis1649x devices.
68            * 700 to 2400 Hz for adis1648x devices.
69      pps:  In Pulse Per Second (PPS) Mode, the rate of data collection and
70            production is equal to the product of the external clock
71            frequency and the scale factor in the SYNC_SCALE register, see
72            Table 154 in the datasheet.
73            The clock-frequency must be:
74            * 1 to 128 Hz for adis1649x devices.
75            * This mode is not supported by adis1648x devices.
76    enum:
77      - sync
78      - pps
79
80  adi,ext-clk-pin:
81    $ref: /schemas/types.yaml#/definitions/string
82    description: |
83      The DIOx line to be used as an external clock input.
84      Each DIOx pin supports only one function at a time (data ready line
85      selection or external clock input). When a single pin has two
86      two assignments, the enable bit for the lower priority function
87      automatically resets to zero (disabling the lower priority function).
88      Data ready has highest priority.
89      If not provided then DIO2 is assigned as default external clock
90      input pin.
91    enum:
92      - DIO1
93      - DIO2
94      - DIO3
95      - DIO4
96
97required:
98  - compatible
99  - reg
100  - interrupts
101  - spi-cpha
102  - spi-cpol
103  - spi-max-frequency
104
105allOf:
106  - $ref: /schemas/spi/spi-peripheral-props.yaml#
107
108unevaluatedProperties: false
109
110examples:
111  - |
112    #include <dt-bindings/interrupt-controller/irq.h>
113    spi {
114        #address-cells = <1>;
115        #size-cells = <0>;
116
117        imu@0 {
118            compatible = "adi,adis16495-1";
119            reg = <0>;
120            spi-max-frequency = <3200000>;
121            spi-cpol;
122            spi-cpha;
123            interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
124            interrupt-parent = <&gpio>;
125            interrupt-names = "DIO2";
126            clocks = <&adis16495_sync>;
127            clock-names = "sync";
128            adi,ext-clk-pin = "DIO1";
129        };
130    };
131...
132