xref: /linux/Documentation/devicetree/bindings/eeprom/microchip,93lc46b.yaml (revision 7ae9fb1b7ecbb5d85d07857943f677fd1a559b18) 
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
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  - $ref: /schemas/nvmem/nvmem.yaml
51
52unevaluatedProperties: false
53
54examples:
55  - |
56    #include <dt-bindings/gpio/gpio.h>
57
58    spi {
59      #address-cells = <1>;
60      #size-cells = <0>;
61
62      eeprom@0 {
63        compatible = "eeprom-93xx46";
64        reg = <0>;
65        spi-max-frequency = <1000000>;
66        spi-cs-high;
67        data-size = <8>;
68        select-gpios = <&gpio4 4 GPIO_ACTIVE_HIGH>;
69      };
70    };
71