# 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)
maintainers:
- Miquel Raynal <miquel.raynal@bootlin.com>
- Richard Weinberger <richard@nod.at>
select: false
properties:
$nodename:
pattern: "^(flash|.*sram|nand)(@.*)?$"
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.
'#address-cells':
deprecated: true
'#size-cells':
deprecated: true
partitions:
$ref: /schemas/mtd/partitions/partitions.yaml
required:
- compatible
patternProperties:
"@[0-9a-f]+$":
$ref: partitions/partition.yaml
deprecated: true
"^partition@[0-9a-f]+":
$ref: partitions/partition.yaml
deprecated: true
"^otp(-[0-9]+)?$":
type: object
allOf:
- $ref: /schemas/nvmem/nvmem.yaml#
- $ref: /schemas/nvmem/nvmem-deprecated-cells.yaml#
unevaluatedProperties: false
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
# This is a generic file other binding inherit from
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>;
};
};
};
};
...
