mtd.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/mtd/mtd.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: MTD (Memory Technology Device) Device Tree Bindings
    8 
    9 maintainers:
   10   - Miquel Raynal <miquel.raynal@bootlin.com>
   11   - Richard Weinberger <richard@nod.at>
   12 
   13 properties:
   14   $nodename:
   15     pattern: "^flash(@.*)?$"
   16 
   17   label:
   18     description:
   19       User-defined MTD device name. Can be used to assign user friendly
   20       names to MTD devices (instead of the flash model or flash controller
   21       based name) in order to ease flash device identification and/or
   22       describe what they are used for.
   23 
   24 patternProperties:
   25   "^otp(-[0-9]+)?$":
   26     type: object
   27     $ref: ../nvmem/nvmem.yaml#
   28 
   29     description: |
   30       An OTP memory region. Some flashes provide a one-time-programmable
   31       memory whose content can either be programmed by a user or is already
   32       pre-programmed by the factory. Some flashes might provide both.
   33 
   34     properties:
   35       compatible:
   36         enum:
   37           - user-otp
   38           - factory-otp
   39 
   40     required:
   41       - compatible
   42 
   43 additionalProperties: true
   44 
   45 examples:
   46   - |
   47     spi {
   48         #address-cells = <1>;
   49         #size-cells = <0>;
   50 
   51         flash@0 {
   52             reg = <0>;
   53             compatible = "jedec,spi-nor";
   54             label = "System-firmware";
   55         };
   56     };
   57 
   58   - |
   59     spi {
   60         #address-cells = <1>;
   61         #size-cells = <0>;
   62 
   63         flash@0 {
   64             reg = <0>;
   65             compatible = "jedec,spi-nor";
   66 
   67             otp-1 {
   68                 compatible = "factory-otp";
   69                 #address-cells = <1>;
   70                 #size-cells = <1>;
   71 
   72                 electronic-serial-number@0 {
   73                     reg = <0 8>;
   74                 };
   75             };
   76 
   77             otp-2 {
   78                 compatible = "user-otp";
   79                 #address-cells = <1>;
   80                 #size-cells = <1>;
   81 
   82                 mac-address@0 {
   83                     reg = <0 6>;
   84                 };
   85             };
   86         };
   87     };
   88 
   89 ...

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sys/contrib/device-tree/Bindings/mtd/mtd.yaml