| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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) |
| 8 | |
| 9 | maintainers: |
| 10 | - Miquel Raynal <miquel.raynal@bootlin.com> |
| 11 | - Richard Weinberger <richard@nod.at> |
| 12 | |
| 13 | properties: |
| 14 | $nodename: |
| 15 | pattern: "^(flash|.*sram|nand)(@.*)?$" |
| 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 | '#address-cells': |
| 25 | deprecated: true |
| 26 | |
| 27 | '#size-cells': |
| 28 | deprecated: true |
| 29 | |
| 30 | partitions: |
| 31 | $ref: /schemas/mtd/partitions/partitions.yaml |
| 32 | |
| 33 | required: |
| 34 | - compatible |
| 35 | |
| 36 | patternProperties: |
| 37 | "@[0-9a-f]+$": |
| 38 | $ref: partitions/partition.yaml |
| 39 | deprecated: true |
| 40 | |
| 41 | "^partition@[0-9a-f]+": |
| 42 | $ref: partitions/partition.yaml |
| 43 | deprecated: true |
| 44 | |
| 45 | "^otp(-[0-9]+)?$": |
| 46 | type: object |
| 47 | |
| 48 | allOf: |
| 49 | - $ref: ../nvmem/nvmem.yaml# |
| 50 | - $ref: ../nvmem/nvmem-deprecated-cells.yaml# |
| 51 | |
| 52 | unevaluatedProperties: false |
| 53 | |
| 54 | description: | |
| 55 | An OTP memory region. Some flashes provide a one-time-programmable |
| 56 | memory whose content can either be programmed by a user or is already |
| 57 | pre-programmed by the factory. Some flashes might provide both. |
| 58 | |
| 59 | properties: |
| 60 | compatible: |
| 61 | enum: |
| 62 | - user-otp |
| 63 | - factory-otp |
| 64 | |
| 65 | required: |
| 66 | - compatible |
| 67 | |
| 68 | # This is a generic file other binding inherit from |
| 69 | additionalProperties: true |
| 70 | |
| 71 | examples: |
| 72 | - | |
| 73 | spi { |
| 74 | #address-cells = <1>; |
| 75 | #size-cells = <0>; |
| 76 | |
| 77 | flash@0 { |
| 78 | reg = <0>; |
| 79 | compatible = "jedec,spi-nor"; |
| 80 | label = "System-firmware"; |
| 81 | }; |
| 82 | }; |
| 83 | |
| 84 | - | |
| 85 | spi { |
| 86 | #address-cells = <1>; |
| 87 | #size-cells = <0>; |
| 88 | |
| 89 | flash@0 { |
| 90 | reg = <0>; |
| 91 | compatible = "jedec,spi-nor"; |
| 92 | |
| 93 | otp-1 { |
| 94 | compatible = "factory-otp"; |
| 95 | #address-cells = <1>; |
| 96 | #size-cells = <1>; |
| 97 | |
| 98 | electronic-serial-number@0 { |
| 99 | reg = <0 8>; |
| 100 | }; |
| 101 | }; |
| 102 | |
| 103 | otp-2 { |
| 104 | compatible = "user-otp"; |
| 105 | #address-cells = <1>; |
| 106 | #size-cells = <1>; |
| 107 | |
| 108 | mac-address@0 { |
| 109 | reg = <0 6>; |
| 110 | }; |
| 111 | }; |
| 112 | }; |
| 113 | }; |
| 114 | |
| 115 | ... |