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Current situation with 4K sectors is quite messy. First of all, some MTD "users" don't work with such small size. An example may be UBIFS which requires 15 KiB erase blocks as a minimum. In theory spi-nor should provide multiple erase regions and MTD "users" should use the one they need. Unforunately that is not implemented. In the result our flashes database in spi-nor is hackish. For some flashes we pretend they don't support 4K sectors just because some distribution uses UBIFS on it. This ofc leads to conflicts, like Samsung using w25q128 with 4K sectors vs. OpenWrt requiring it to pretend it's 64 KiB blocks only. My idea (plan?) for fixing this situation: 1) Use real hw info (this requires a way for disabling 4K for now) 2) Provide detailed info about erase regions 3) Make UBIFS work with devices that support 4K sectors Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> |
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| fsl-quadspi.c | ||
| Kconfig | ||
| Makefile | ||
| spi-nor.c | ||