dd7f48ef4a
Improve the binding descriptions for the atmel,at24 and atmel,at25 EEPROM compatibles. These compatibles work for a number of different EEPROM families manufactured by vendors other than Atmel. Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
37 lines
1.1 KiB
YAML
37 lines
1.1 KiB
YAML
# Copyright (c) 2019 Vestas Wind Systems A/S
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# SPDX-License-Identifier: Apache-2.0
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description: |
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SPI EEPROMs compatible with Atmel's AT25 family
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There are multiple vendors manufacturing SPI EEPROMs compatible with the programming model of the
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Atmel AT25.
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Examples of compatible EEPROM families:
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- Microchip AT25xxx
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- ST M95xxx
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Each of these can be represented by a set of common parameters (EEPROM size, page size, address
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width, and timeout) available from the datasheet of the specific EEPROM. The compatible string for
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these can list the specific EEPROM vendor and model along with the vendor EEPROM family as long as
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the least-specific compatible entry is "atmel,at25".
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Example devicetree node describing a ST M95256 EEPROM on the spi0 bus:
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&spi0 {
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status = "okay";
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eeprom@1 {
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compatible = "st,m95256", "st,m95xxx", "atmel,at25";
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reg = <0x1>;
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size = <DT_SIZE_K(32)>;
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pagesize = <64>;
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address-width = <16>;
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spi-max-frequency = <DT_FREQ_M(20)>;
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timeout = <5>;
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};
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};
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compatible: "atmel,at25"
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include: ["atmel,at2x-base.yaml", spi-device.yaml]
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