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RFC: remove w25qxxdv flash driver from Zephyr as of 2.4.0
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Peter A. Bigot
The spi_flash_w25qxxdv driver has been superseded by the generic
spi_nor driver for over a year. The only non-refactoring change to
the W25Q driver in the last 18 months was done to support a
backport to 1.14.
All devices supported by spi_flash_w25qxxdv driver are expected to be supported by the spi_nor driver, using the standard jedec,spi-nor devicetree compatible. No in-tree devicetree files make use of this driver. To reduce confusion about which driver is expected to be used for JEDEC-standard SPI NOR serial flash memories pull request 27802 proposes to remove the redundant driver from Zephyr 2.4. (It's not practical to deprecate a driver, and the existing one will work only for winbond,w25q16 if anything. Please raise any concerns you have with this proposal as comments/reviews on the pull request. Peter
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