menuconfig MTD_SPI_NOR tristate "SPI-NOR device support" depends on MTD help This is the framework for the SPI NOR which can be used by the SPI device drivers and the SPI-NOR device driver. if MTD_SPI_NOR config MTD_SPI_NOR_USE_4K_SECTORS bool "Use small 4096 B erase sectors" help Many flash memories support erasing small (4096 B) sectors. Depending on the usage this feature may provide performance gain in comparison to erasing whole blocks (32/64 KiB). Changing a small part of the flash's contents is usually faster with small sectors. On the other hand erasing should be faster when using 64 KiB block instead of 16 × 4 KiB sectors. Please note that some tools/drivers/filesystems may not work with 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum). config SPI_CADENCE_QUADSPI tristate "Cadence Quad SPI controller" help This enables support for the Cadence Quad SPI controller and NOR flash. endif