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