STRUCT SPINAND_DEVID(9)

✨ struct spinand_devid(9) ✨

okay so bestie, welcome to the struct spinand_devid(9) page 💅 this is the Kernel API Manual moment where we learn how an SPI NAND chip says "hi, it's me" — like a little name tag but for silicon 🎀

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🌸 NAME 🌸

struct spinand_devid — the SPI NAND device id structure. literally the vibe check of "which chip am I even talking to" 🦋

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⭐ SYNOPSIS ⭐

struct spinand_devid {
    const u8 *id;
    const u8 len;
    const enum spinand_readid_method method;
 };

no cap, that's the whole thing. three members, zero drama ✨

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🧚 Members 🧚

• id — the device id of the current chip 👑 this is the actual fingerprint, bestie.
• len — how many bytes live in the device id. it's a const u8, so like, it's not changing its mind 🙈
• method — the method used to read the chip id. there are 3 possible variants, and yes we're listing all of them because i would never do you like that:
  • SPINAND_READID_METHOD_OPCODE: the chip id is returned immediately after the read_id opcode 🔥
  • SPINAND_READID_METHOD_OPCODE_ADDR: the chip id is returned after the read_id opcode + a 1-byte address 📍
  • SPINAND_READID_METHOD_OPCODE_DUMMY: the chip id is returned after the read_id opcode + 1 dummy byte 💀 (yes, a whole byte of nothing. it's giving filler episode but it's load-bearing.)

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🦋 SEE ALSO 🦋

the whole friend group, fr fr — kernel file ./include/linux/mtd/spinand.h plus:

struct spinand_id(9), struct spinand_manufacturer(9), struct spinand_op_variants(9), struct spinand_ondie_ecc_conf(9), struct spinand_otp_layout(9), struct spinand_fact_otp_ops(9), struct spinand_user_otp_ops(9), struct spinand_fact_otp(9), struct spinand_user_otp(9), enum spinand_bus_interface(9), struct spinand_info(9), struct spinand_mem_ops(9), struct spinand_device(9), mtd_to_spinand(9), spinand_to_mtd(9), nand_to_spinand(9), spinand_to_nand(9), spinand_set_of_node(9)

go read them too, i'm not gatekeeping anything 💖

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and that's the page!! mwah 🫶 source is ./include/linux/mtd, dated October 2026 — catch you in the next struct spinand_devid(9), slay 🌈👑