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
7 title: Microchip 93xx46 SPI compatible EEPROM family
8
9 maintainers:
10 - Cory Tusar <cory.tusar@pid1solutions.com>
11
12 properties:
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
42 required:
43 - compatible
44 - reg
45 - data-size
46 - spi-max-frequency
47
48 allOf:
49 - $ref: /schemas/spi/spi-peripheral-props.yaml#
50 - $ref: /schemas/nvmem/nvmem.yaml
51
52 unevaluatedProperties: false
53
54 examples:
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 };
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