ENUM SPI_NOR_CMD_EXT(9)

🦋 NAME 🦋

enum spi_nor_cmd_ext(9) — describes the command opcode extension in DTR mode. 💅

This lil page is from the Kernel API Manual, and it's giving “small enum, big DTR energy.” No cap.

✨ SYNOPSIS ✨

enum spi_nor_cmd_ext {
    SPI_NOR_EXT_NONE ,
    SPI_NOR_EXT_REPEAT ,
    SPI_NOR_EXT_INVERT ,
    SPI_NOR_EXT_HEX

};

🎀 Constants 🎀

Okay so here's the vibe check on each constant, bestie:

• SPI_NOR_EXT_NONE — no extension. This is the default, and it's used in Legacy SPI mode. Periodt.
• SPI_NOR_EXT_REPEAT — the extension is same as the opcode. Literally matching energy.
• SPI_NOR_EXT_INVERT — the extension is the bitwise inverse of the opcode. Flip it and reverse it, iykyk.
• SPI_NOR_EXT_HEX — the extension is any hex value. The command and opcode combine to form a 16-bit opcode. Iconic.

🌈 SEE ALSO 🌈

Kernel file ./include/linux/mtd/spi-nor.h, plus these besties:

• struct spi_nor_hwcaps(9)
• struct spi_nor_controller_ops(9)
• struct spi_nor(9)
• spi_nor_scan(9)

That's the whole page, bestie 🫶 From ./include/linux/mtd, dated October 2026 — Kernel API Manual energy, mwah 💋✨