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