| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/mtd/mtd.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: MTD (Memory Technology Device) Device Tree Bindings |
| |
| maintainers: |
| - Miquel Raynal <miquel.raynal@bootlin.com> |
| - Richard Weinberger <richard@nod.at> |
| |
| properties: |
| $nodename: |
| pattern: "^flash(@.*)?$" |
| |
| label: |
| description: |
| User-defined MTD device name. Can be used to assign user friendly |
| names to MTD devices (instead of the flash model or flash controller |
| based name) in order to ease flash device identification and/or |
| describe what they are used for. |
| |
| patternProperties: |
| "^otp(-[0-9]+)?$": |
| type: object |
| $ref: ../nvmem/nvmem.yaml# |
| |
| description: | |
| An OTP memory region. Some flashes provide a one-time-programmable |
| memory whose content can either be programmed by a user or is already |
| pre-programmed by the factory. Some flashes might provide both. |
| |
| properties: |
| compatible: |
| enum: |
| - user-otp |
| - factory-otp |
| |
| required: |
| - compatible |
| |
| additionalProperties: true |
| |
| examples: |
| - | |
| spi { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| flash@0 { |
| reg = <0>; |
| compatible = "jedec,spi-nor"; |
| label = "System-firmware"; |
| }; |
| }; |
| |
| - | |
| spi { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| flash@0 { |
| reg = <0>; |
| compatible = "jedec,spi-nor"; |
| |
| otp-1 { |
| compatible = "factory-otp"; |
| #address-cells = <1>; |
| #size-cells = <1>; |
| |
| electronic-serial-number@0 { |
| reg = <0 8>; |
| }; |
| }; |
| |
| otp-2 { |
| compatible = "user-otp"; |
| #address-cells = <1>; |
| #size-cells = <1>; |
| |
| mac-address@0 { |
| reg = <0 6>; |
| }; |
| }; |
| }; |
| }; |
| |
| ... |
