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# SPDX-License-Identifier: GPL-2.0-only
%YAML 1.2
---
$id: http://devicetree.org/schemas/mtd/jedec,spi-nor.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: SPI NOR flash ST M25Pxx (and similar) serial flash chips
maintainers:
- Rob Herring <robh@kernel.org>
allOf:
- $ref: "mtd.yaml#"
- $ref: /schemas/spi/spi-peripheral-props.yaml#
properties:
compatible:
oneOf:
- items:
- pattern: "^((((micron|spansion|st),)?\
(m25p(40|80|16|32|64|128)|\
n25q(32b|064|128a11|128a13|256a|512a|164k)))|\
atmel,at25df(321a|641|081a)|\
everspin,mr25h(10|40|128|256)|\
(mxicy|macronix),mx25l(4005a|1606e|6405d|8005|12805d|25635e)|\
(mxicy|macronix),mx25u(4033|4035)|\
(spansion,)?s25fl(128s|256s1|512s|008k|064k|164k)|\
(sst|microchip),sst25vf(016b|032b|040b)|\
(sst,)?sst26wf016b|\
(sst,)?sst25wf(040b|080)|\
winbond,w25x(80|32)|\
(winbond,)?w25q(16|32(w|dw)?|64(dw)?|80bl|128(fw)?|256))$"
- const: jedec,spi-nor
- items:
- enum:
- issi,is25lp016d
- micron,mt25qu02g
- mxicy,mx25r1635f
- mxicy,mx25u6435f
- mxicy,mx25v8035f
- spansion,s25sl12801
- spansion,s25fs512s
- const: jedec,spi-nor
- const: jedec,spi-nor
description:
Must also include "jedec,spi-nor" for any SPI NOR flash that can be
identified by the JEDEC READ ID opcode (0x9F).
reg:
minItems: 1
maxItems: 2
m25p,fast-read:
type: boolean
description:
Use the "fast read" opcode to read data from the chip instead of the usual
"read" opcode. This opcode is not supported by all chips and support for
it can not be detected at runtime. Refer to your chips' datasheet to check
if this is supported by your chip.
broken-flash-reset:
type: boolean
description:
Some flash devices utilize stateful addressing modes (e.g., for 32-bit
addressing) which need to be managed carefully by a system. Because these
sorts of flash don't have a standardized software reset command, and
because some systems don't toggle the flash RESET# pin upon system reset
(if the pin even exists at all), there are systems which cannot reboot
properly if the flash is left in the "wrong" state. This boolean flag can
be used on such systems, to denote the absence of a reliable reset
mechanism.
partitions:
type: object
'#address-cells': true
'#size-cells': true
patternProperties:
# Note: use 'partitions' node for new users
'^partition@':
type: object
"^otp(-[0-9]+)?$":
type: object
spi-cpol: true
spi-cpha: true
dependencies:
spi-cpol: [ spi-cpha ]
spi-cpha: [ spi-cpol ]
unevaluatedProperties: false
examples:
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
flash@0 {
compatible = "spansion,m25p80", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <40000000>;
m25p,fast-read;
};
};
...
|
