1# Copyright (c) 2020 Nordic Semiconductor ASA
2# SPDX-License-Identifier: Apache-2.0
3
4menuconfig SPI_FLASH_AT45
5	bool "AT45 family flash driver"
6	default y
7	depends on DT_HAS_ATMEL_AT45_ENABLED
8	select FLASH_HAS_DRIVER_ENABLED
9	select FLASH_HAS_PAGE_LAYOUT
10	select SPI
11	help
12	  This driver can handle several instances of AT45 family chips that
13	  are enabled by specifying devicetree nodes with the "compatible"
14	  property set to "atmel,at45" and other required properties like
15	  JEDEC ID, chip capacity, block and page size etc. configured
16	  accordingly.
17
18	  The driver is only capable of using "power of 2" binary page sizes
19	  in those chips and at initialization configures them to work in
20	  that mode (unless it is already done).
21
22if SPI_FLASH_AT45
23
24config SPI_FLASH_AT45_USE_READ_MODIFY_WRITE
25	bool "Use Read-Modify-Write command in flash_write()"
26	default y
27	help
28	  Use the Read-Modify-Write command (opcode 0x58) instead of the default
29	  Main Memory Program without Built-In Erase (opcode 0x02). This allows
30	  writing of data without prior erasing of corresponding pages.
31
32config SPI_FLASH_AT45_INIT_PRIORITY
33	int "Driver initialization priority"
34	default 80
35	help
36	  Device driver initialization priority.
37	  SPI driver needs to be initialized before this one.
38
39endif # SPI_FLASH_AT45
40