0001 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/mtd/mtd.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: MTD (Memory Technology Device) Device Tree Bindings
0008
0009 maintainers:
0010 - Miquel Raynal <miquel.raynal@bootlin.com>
0011 - Richard Weinberger <richard@nod.at>
0012
0013 properties:
0014 $nodename:
0015 pattern: "^flash(@.*)?$"
0016
0017 label:
0018 description:
0019 User-defined MTD device name. Can be used to assign user friendly
0020 names to MTD devices (instead of the flash model or flash controller
0021 based name) in order to ease flash device identification and/or
0022 describe what they are used for.
0023
0024 patternProperties:
0025 "^otp(-[0-9]+)?$":
0026 type: object
0027 $ref: ../nvmem/nvmem.yaml#
0028
0029 description: |
0030 An OTP memory region. Some flashes provide a one-time-programmable
0031 memory whose content can either be programmed by a user or is already
0032 pre-programmed by the factory. Some flashes might provide both.
0033
0034 properties:
0035 compatible:
0036 enum:
0037 - user-otp
0038 - factory-otp
0039
0040 required:
0041 - compatible
0042
0043 additionalProperties: true
0044
0045 examples:
0046 - |
0047 spi {
0048 #address-cells = <1>;
0049 #size-cells = <0>;
0050
0051 flash@0 {
0052 reg = <0>;
0053 compatible = "jedec,spi-nor";
0054 label = "System-firmware";
0055 };
0056 };
0057
0058 - |
0059 spi {
0060 #address-cells = <1>;
0061 #size-cells = <0>;
0062
0063 flash@0 {
0064 reg = <0>;
0065 compatible = "jedec,spi-nor";
0066
0067 otp-1 {
0068 compatible = "factory-otp";
0069 #address-cells = <1>;
0070 #size-cells = <1>;
0071
0072 electronic-serial-number@0 {
0073 reg = <0 8>;
0074 };
0075 };
0076
0077 otp-2 {
0078 compatible = "user-otp";
0079 #address-cells = <1>;
0080 #size-cells = <1>;
0081
0082 mac-address@0 {
0083 reg = <0 6>;
0084 };
0085 };
0086 };
0087 };
0088
0089 ...
