2020-03-11 00:57:01 +08:00
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# Copyright (c) 2020 Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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menuconfig SPI_FLASH_AT45
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bool "AT45 family flash driver"
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select FLASH_HAS_DRIVER_ENABLED
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2020-09-06 22:28:31 +08:00
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select FLASH_HAS_PAGE_LAYOUT
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2020-03-11 00:57:01 +08:00
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depends on SPI
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help
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This driver can handle several instances of AT45 family chips that
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are enabled by specifying devicetree nodes with the "compatible"
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property set to "atmel,at45" and other required properties like
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JEDEC ID, chip capacity, block and page size etc. configured
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accordingly.
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The driver is only capable of using "power of 2" binary page sizes
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in those chips and at initialization configures them to work in
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that mode (unless it is already done).
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if SPI_FLASH_AT45
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config SPI_FLASH_AT45_USE_READ_MODIFY_WRITE
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bool "Use Read-Modify-Write command in flash_write()"
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default y
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help
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Use the Read-Modify-Write command (opcode 0x58) instead of the default
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Main Memory Program without Built-In Erase (opcode 0x02). This allows
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writing of data without prior erasing of corresponding pages.
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config SPI_FLASH_AT45_INIT_PRIORITY
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int "Driver initialization priority"
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default 80
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help
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Device driver initialization priority.
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SPI driver needs to be initialized before this one.
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endif # SPI_FLASH_AT45
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