STRUCT FLASH_PLATFORM_DATA(9)

🎀 struct_flash_platform_data(9) 🎀

okay so welcome to the Kernel API Manual, bestie — today’s main character is struct flash_platform_data, and it is literally the board-specific flash data struct. 💅✨

✨ NAME ✨

struct flash_platform_data — board-specific flash data 🦋

🎀 SYNOPSIS 🎀

struct flash_platform_data {
    char *name;
    struct mtd_partition *parts;
    unsigned int    nr_parts;
    char *type;
 };

🧩 Members 🧩

• name — optional flash device name (eg, as used with mtdparts=) 👀
• parts — optional array of mtd_partitions for static partitioning 🧩
• nr_parts — number of mtd_partitions for static partitioning 🔢
• type — optional flash device type (e.g. m25p80 vs m25p64), for use with chips that can't be queried for JEDEC or other IDs 🫶

🌸 Description 🌸

Board init code (in arch/.../mach-xxx/board-yyy.c files) can provide information about SPI flash parts (such as DataFlash) to help set up the device and its appropriate default partitioning. 🎀

🚨 Note that for DataFlash, sizes for pages, blocks, and sectors are rarely powers of two; and partitions should be sector-aligned. 😭

🔗 SEE ALSO 🔗

• Kernel file ./include/linux/spi/flash.h 📁

mwah 💋 — source/version: ./include/linux/spi; date: October 2026. periodt. 👑