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