default or selected kernelversion does not have config value CONFIG_MTD_NAND_LOONGSON.
Result is shown for kernelversion 6.18-rc3
Loongson NAND controller
modulename: loongson-nand-controller.ko
configname: CONFIG_MTD_NAND_LOONGSON
Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>NAND
└─>Raw/Parallel NAND Device Support
└─>Loongson NAND controller
Enables support for NAND controller on Loongson family chips.
source code:
depends
CONFIG_MTDCONFIG_MTD_RAW_NAND
CONFIG_COMPILE_TEST or CONFIG_LOONGSON1_APB_DMA or CONFIG_LOONGSON2_APB_DMA