STRUCT SPEAR_SNOR_FLASH(9)

💖 struct spear_snor_flash(9) 💖

okay bestie, so we're deep in the Kernel API Manual for the struct spear_snor_flash — and honestly? this lil struct is giving serial NOR flash main character energy ✨ let me walk you through it, no cap.

✨ SYNOPSIS ✨

here's the whole vibe, fr fr:

struct spear_snor_flash {
    u32 bank;
    u32 dev_id;
    struct mutex lock;
    struct mtd_info mtd;
    u32 num_parts;
    struct mtd_partition *parts;
    u32 page_size;
    void __iomem *base_addr;
    u8 erase_cmd;
    u8 fast_mode;
 };

🎀 Members 🎀

• bank — the bank number, and it's one of 0, 1, 2, 3 for each NOR-flash 🦋 lowkey vital.
• dev_id — the device ID of the NOR-flash. its whole identity 💅
• lock — a lock that manages flash read, write and erase operations. she's the bouncer at the club, keeping everything orderly 😭 no chaos allowed.
• mtd — the MTD info for each NOR-flash. important metadata vibes 🎀
• num_parts — total number of partitions in each bank of the NOR-flash. count 'em up ✨
• parts — partition info for each bank of the NOR-flash. the layout map, basically 🗺️
• page_size — page size of the NOR-flash. size matters, iykyk 🌸
• base_addr — base address of the NOR-flash. where it all starts 🏠
• erase_cmd — the erase command, and just so u know: it may vary on different flash types ⚠️ don't assume bestie, check ur flash type.
• fast_mode — indicates the flash supports read in fast mode 🔥 speed demon energy.

👑 SEE ALSO 👑

and now for the structured connections, iykyk ✨

kernel file ./drivers/mtd/devices/spear_smi.c plus these icons:

• struct spear_smi(9)
• spear_smi_read_sr(9)
• spear_smi_wait_till_ready(9)
• spear_smi_int_handler(9)
• spear_smi_hw_init(9)
• get_flash_index(9)
• spear_smi_write_enable(9)
• spear_smi_erase_sector(9)
• spear_mtd_erase(9)
• spear_mtd_read(9)
• spear_mtd_write(9)
• spear_smi_probe_flash(9)
• spear_smi_probe(9)
• spear_smi_remove(9)

and that's the whole struct bestie, periodt 💅✨

catch you in ./drivers/mtd/devices, October 2026 🎀💖🫶