xref: /freebsd/sys/contrib/device-tree/Bindings/eeprom/microchip,93lc46b.yaml (revision e32fecd0c2c3ee37c47ee100f169e7eb0282a873) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/eeprom/microchip,93lc46b.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Microchip 93xx46 SPI compatible EEPROM family dt bindings
8
9maintainers:
10  - Cory Tusar <cory.tusar@pid1solutions.com>
11
12properties:
13  compatible:
14    enum:
15      - atmel,at93c46
16      - atmel,at93c46d
17      - atmel,at93c56
18      - atmel,at93c66
19      - eeprom-93xx46
20      - microchip,93lc46b
21
22  data-size:
23    description: number of data bits per word
24    $ref: /schemas/types.yaml#/definitions/uint32
25    enum: [8, 16]
26
27  reg:
28    description: chip select of EEPROM
29    maxItems: 1
30
31  read-only:
32    description:
33      parameter-less property which disables writes to the EEPROM
34    type: boolean
35
36  select-gpios:
37    description:
38      specifies the GPIO that needs to be asserted prior to each access
39      of EEPROM (e.g. for SPI bus multiplexing)
40    maxItems: 1
41
42required:
43  - compatible
44  - reg
45  - data-size
46  - spi-max-frequency
47
48allOf:
49  - $ref: /schemas/spi/spi-peripheral-props.yaml#
50
51unevaluatedProperties: false
52
53examples:
54  - |
55    #include <dt-bindings/gpio/gpio.h>
56
57    spi {
58      #address-cells = <1>;
59      #size-cells = <0>;
60
61      eeprom@0 {
62        compatible = "eeprom-93xx46";
63        reg = <0>;
64        spi-max-frequency = <1000000>;
65        spi-cs-high;
66        data-size = <8>;
67        select-gpios = <&gpio4 4 GPIO_ACTIVE_HIGH>;
68      };
69    };
70