| 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 | |
| Tom Rini | 6bb92fc | 2024-05-20 09:54:58 -0600 | [diff] [blame] | 13 | select: false |
| 14 | |
| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 15 | properties: |
| 16 | $nodename: |
| 17 | pattern: "^(flash|.*sram|nand)(@.*)?$" |
| 18 | |
| 19 | label: |
| 20 | description: |
| 21 | User-defined MTD device name. Can be used to assign user friendly |
| 22 | names to MTD devices (instead of the flash model or flash controller |
| 23 | based name) in order to ease flash device identification and/or |
| 24 | describe what they are used for. |
| 25 | |
| 26 | '#address-cells': |
| 27 | deprecated: true |
| 28 | |
| 29 | '#size-cells': |
| 30 | deprecated: true |
| 31 | |
| 32 | partitions: |
| 33 | $ref: /schemas/mtd/partitions/partitions.yaml |
| 34 | |
| 35 | required: |
| 36 | - compatible |
| 37 | |
| 38 | patternProperties: |
| 39 | "@[0-9a-f]+$": |
| 40 | $ref: partitions/partition.yaml |
| 41 | deprecated: true |
| 42 | |
| 43 | "^partition@[0-9a-f]+": |
| 44 | $ref: partitions/partition.yaml |
| 45 | deprecated: true |
| 46 | |
| 47 | "^otp(-[0-9]+)?$": |
| 48 | type: object |
| 49 | |
| 50 | allOf: |
| 51 | - $ref: ../nvmem/nvmem.yaml# |
| 52 | - $ref: ../nvmem/nvmem-deprecated-cells.yaml# |
| 53 | |
| 54 | unevaluatedProperties: false |
| 55 | |
| 56 | description: | |
| 57 | An OTP memory region. Some flashes provide a one-time-programmable |
| 58 | memory whose content can either be programmed by a user or is already |
| 59 | pre-programmed by the factory. Some flashes might provide both. |
| 60 | |
| 61 | properties: |
| 62 | compatible: |
| 63 | enum: |
| 64 | - user-otp |
| 65 | - factory-otp |
| 66 | |
| 67 | required: |
| 68 | - compatible |
| 69 | |
| 70 | # This is a generic file other binding inherit from |
| 71 | additionalProperties: true |
| 72 | |
| 73 | examples: |
| 74 | - | |
| 75 | spi { |
| 76 | #address-cells = <1>; |
| 77 | #size-cells = <0>; |
| 78 | |
| 79 | flash@0 { |
| 80 | reg = <0>; |
| 81 | compatible = "jedec,spi-nor"; |
| 82 | label = "System-firmware"; |
| 83 | }; |
| 84 | }; |
| 85 | |
| 86 | - | |
| 87 | spi { |
| 88 | #address-cells = <1>; |
| 89 | #size-cells = <0>; |
| 90 | |
| 91 | flash@0 { |
| 92 | reg = <0>; |
| 93 | compatible = "jedec,spi-nor"; |
| 94 | |
| 95 | otp-1 { |
| 96 | compatible = "factory-otp"; |
| 97 | #address-cells = <1>; |
| 98 | #size-cells = <1>; |
| 99 | |
| 100 | electronic-serial-number@0 { |
| 101 | reg = <0 8>; |
| 102 | }; |
| 103 | }; |
| 104 | |
| 105 | otp-2 { |
| 106 | compatible = "user-otp"; |
| 107 | #address-cells = <1>; |
| 108 | #size-cells = <1>; |
| 109 | |
| 110 | mac-address@0 { |
| 111 | reg = <0 6>; |
| 112 | }; |
| 113 | }; |
| 114 | }; |
| 115 | }; |
| 116 | |
| 117 | ... |