STRUCT NVMEM_LAYOUT(9)

💖 struct nvmem_layout(9) 💖

okay so real talk — welcome to the struct nvmem_layout(9) page from the Kernel API Manual, bestie. this is the whole entire vibe of NVMEM layout definitions, and honestly? it's giving "small struct, big responsibilities." let's get into it 🫶

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✨ NAME ✨

struct nvmem_layout — NVMEM layout definitions. that's it, that's the tweet 💅

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🌸 SYNOPSIS 🌸

struct nvmem_layout {
    struct device dev;
    struct nvmem_device *nvmem;
    int (*add_cells)(struct nvmem_layout *layout);
};

like… three members. minimal. iconic. main character energy 🔥

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🎀 Members 🎀

• dev — the device-model layout device. yes it's a whole struct device, it's living its best life in the device model ✨
• nvmem — the underlying NVMEM device. the actual memory situation underneath all the layout drama 💾
• add_cells — bestie this is the callback that gets called if a nvmem device is found which has this layout. when it fires, the function will add layout specific cells with nvmem_add_one_cell. no cap, that's the whole job 🧚

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🦋 Description 🦋

so here's the lore: a nvmem device can hold a well defined structure which can just be evaluated during runtime. for example a TLV list, or a list of "name=val" pairs. and a nvmem layout? it can parse the nvmem device and add appropriate cells. literally that's the plot 🌈

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👑 SEE ALSO 👑

• Kernel file ./include/linux/nvmem-provider.h
• struct nvmem_keepout(9)
• struct nvmem_cell_info(9)
• struct nvmem_config(9)
• of_nvmem_layout_get_container(9)

go read them, iykyk 📚✨

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k that's the page!! mwah 💋

and for the sign-off: this cutie lives in ./include/linux, dated October 2026, and it's filed under struct nvmem_layout(9). slay, go parse some cells 🍓💜