The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/misc/eeprom-93xx46.yaml

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    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     };

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