Documentation/devicetree/bindings/eeprom/microchip,93lc46b.yaml

   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     };