215 lines
5.6 KiB
YAML
215 lines
5.6 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only
|
|
# Copyright 2019 BayLibre SAS
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/eeprom/at24.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: I2C EEPROMs compatible with Atmel's AT24
|
|
|
|
maintainers:
|
|
- Bartosz Golaszewski <bgolaszewski@baylibre.com>
|
|
|
|
allOf:
|
|
- $ref: /schemas/nvmem/nvmem.yaml
|
|
- $ref: /schemas/nvmem/nvmem-deprecated-cells.yaml
|
|
|
|
select:
|
|
properties:
|
|
compatible:
|
|
contains:
|
|
pattern: "^atmel,(24(c|cs|mac)[0-9]+|spd)$"
|
|
required:
|
|
- compatible
|
|
|
|
properties:
|
|
$nodename:
|
|
pattern: "^eeprom@[0-9a-f]{1,2}$"
|
|
|
|
# There are multiple known vendors who manufacture EEPROM chips compatible
|
|
# with Atmel's AT24. The compatible string requires either a single item
|
|
# if the memory comes from Atmel (in which case the vendor part must be
|
|
# 'atmel') or two items with the same 'model' part where the vendor part of
|
|
# the first one is the actual manufacturer and the second item is the
|
|
# corresponding 'atmel,<model>' from Atmel.
|
|
compatible:
|
|
oneOf:
|
|
- allOf:
|
|
- minItems: 1
|
|
items:
|
|
- pattern: "^(atmel|catalyst|microchip|nxp|ramtron|renesas|rohm|st),(24(c|cs|lc|mac)[0-9]+|spd)$"
|
|
- pattern: "^atmel,(24(c|cs|mac)[0-9]+|spd)$"
|
|
- oneOf:
|
|
- items:
|
|
pattern: c00$
|
|
- items:
|
|
pattern: c01$
|
|
- items:
|
|
pattern: cs01$
|
|
- items:
|
|
pattern: c02$
|
|
- items:
|
|
pattern: cs02$
|
|
- items:
|
|
pattern: mac402$
|
|
- items:
|
|
pattern: mac602$
|
|
- items:
|
|
pattern: c04$
|
|
- items:
|
|
pattern: cs04$
|
|
- items:
|
|
pattern: c08$
|
|
- items:
|
|
pattern: cs08$
|
|
- items:
|
|
pattern: c16$
|
|
- items:
|
|
pattern: cs16$
|
|
- items:
|
|
pattern: c32$
|
|
- items:
|
|
pattern: c32d-wl$
|
|
- items:
|
|
pattern: cs32$
|
|
- items:
|
|
pattern: c64$
|
|
- items:
|
|
pattern: c64d-wl$
|
|
- items:
|
|
pattern: cs64$
|
|
- items:
|
|
pattern: c128$
|
|
- items:
|
|
pattern: cs128$
|
|
- items:
|
|
pattern: c256$
|
|
- items:
|
|
pattern: cs256$
|
|
- items:
|
|
pattern: c512$
|
|
- items:
|
|
pattern: cs512$
|
|
- items:
|
|
pattern: c1024$
|
|
- items:
|
|
pattern: cs1024$
|
|
- items:
|
|
pattern: c1025$
|
|
- items:
|
|
pattern: cs1025$
|
|
- items:
|
|
pattern: c2048$
|
|
- items:
|
|
pattern: cs2048$
|
|
- items:
|
|
pattern: spd$
|
|
# These are special cases that don't conform to the above pattern.
|
|
# Each requires a standard at24 model as fallback.
|
|
- items:
|
|
- const: belling,bl24c16a
|
|
- const: atmel,24c16
|
|
- items:
|
|
- enum:
|
|
- rohm,br24g01
|
|
- rohm,br24t01
|
|
- const: atmel,24c01
|
|
- items:
|
|
- enum:
|
|
- nxp,se97b
|
|
- renesas,r1ex24002
|
|
- const: atmel,24c02
|
|
- items:
|
|
- enum:
|
|
- onnn,cat24c04
|
|
- onnn,cat24c05
|
|
- rohm,br24g04
|
|
- const: atmel,24c04
|
|
- items:
|
|
- const: renesas,r1ex24016
|
|
- const: atmel,24c16
|
|
- items:
|
|
- const: giantec,gt24c32a
|
|
- const: atmel,24c32
|
|
- items:
|
|
- enum:
|
|
- renesas,r1ex24128
|
|
- samsung,s524ad0xd1
|
|
- const: atmel,24c128
|
|
|
|
label:
|
|
description: Descriptive name of the EEPROM.
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
pagesize:
|
|
description:
|
|
The length of the pagesize for writing. Please consult the
|
|
manual of your device, that value varies a lot. A wrong value
|
|
may result in data loss! If not specified, a safety value of
|
|
'1' is used which will be very slow.
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
enum: [1, 8, 16, 32, 64, 128, 256]
|
|
default: 1
|
|
|
|
read-only:
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
|
description:
|
|
Disables writes to the eeprom.
|
|
|
|
size:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description:
|
|
Total eeprom size in bytes.
|
|
|
|
no-read-rollover:
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
|
description:
|
|
Indicates that the multi-address eeprom does not automatically roll
|
|
over reads to the next slave address. Please consult the manual of
|
|
your device.
|
|
|
|
wp-gpios: true
|
|
|
|
address-width:
|
|
description:
|
|
Number of address bits.
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
default: 8
|
|
enum: [ 8, 16 ]
|
|
|
|
num-addresses:
|
|
description:
|
|
Total number of i2c slave addresses this device takes.
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
default: 1
|
|
minimum: 1
|
|
maximum: 8
|
|
|
|
vcc-supply:
|
|
description:
|
|
phandle of the regulator that provides the supply voltage.
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
|
|
unevaluatedProperties: false
|
|
|
|
examples:
|
|
- |
|
|
i2c {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
eeprom@52 {
|
|
compatible = "microchip,24c32", "atmel,24c32";
|
|
reg = <0x52>;
|
|
pagesize = <32>;
|
|
wp-gpios = <&gpio1 3 0>;
|
|
num-addresses = <8>;
|
|
};
|
|
};
|
|
...
|