STRUCT SPI_MEM(9)

💅 struct spi_mem(9)

okay so bestie, welcome to the Kernel API Manual — this one's a little struct called struct spi_mem, and it's literally just here to describe a SPI memory device ✨

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🌸 NAME

struct spi_mem — describes a SPI memory device 🫶

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✨ SYNOPSIS

struct spi_mem {
    struct spi_device *spi;
    void *drvpriv;
    const char *name;
    bool dqs;
 };

no cap, that's the whole thing. four fields. she's compact and she knows it 💅

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🎀 Members

• spi — the underlying SPI device. the main character of the operation, tbh 👑
• drvpriv — spi_mem_driver private data. it's giving "don't touch my stuff" energy, but like, respectfully 🧚
• name — name of the SPI memory device. so we know who we're dealing with 💖
• dqs — extra data trobe pin available for high frequency read operations. (yes, "trobe" — that's literally what the page says, don't come for me 💀) highkey useful when you're going fast 🔥

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🦋 Description

Extra information that describes the SPI memory device — the kind of stuff the controller might need to properly handle this device — goes right here. literally this struct is the vibe-check container for it 🌈

One example would be the device size, since some controllers expose their SPI mem devices through a io-mapped region. iykyk 😌

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💜 SEE ALSO

Kernel file ./include/linux/spi/spi-mem.h, enum spi_mem_data_dir(9), struct spi_mem_op(9), struct spi_mem_dirmap_info(9), struct spi_mem_dirmap_desc(9), spi_mem_set_drvdata(9), spi_mem_get_drvdata(9), struct spi_controller_mem_ops(9), struct spi_controller_mem_caps(9), struct spi_mem_driver(9)

go read all of them, i'll wait 🍓

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fr fr, this page comes straight out of ./include/linux/spi and it's dated October 2026, filed under struct spi_mem(9) — slay, go forth and probe your memory devices 💖✨🎀