Documentation/devicetree/bindings/misc/eeprom-93xx46.yaml

   1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/misc/eeprom-93xx46.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Microchip 93xx46 SPI compatible EEPROM family dt bindings
   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   spi-max-frequency: true
  32   spi-cs-high: true
  33
  34   read-only:
  35     description:
  36       parameter-less property which disables writes to the EEPROM
  37     type: boolean
  38
  39   select-gpios:
  40     description:
  41       specifies the GPIO that needs to be asserted prior to each access
  42       of EEPROM (e.g. for SPI bus multiplexing)
  43     maxItems: 1
  44
  45
  46 required:
  47   - compatible
  48   - reg
  49   - data-size
  50   - spi-max-frequency
  51
  52 additionalProperties: 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     };