nvmem_cell_read_u32(9)

📦 version 7.3.1, in nixpkgs unstable

💖 nvmem_cell_read_u32(9) 💖

okay so real talk, bestie — we're deep in the Kernel API Manual today, and this little function is one of those tiny icon moves that saves you from writing a whole song and dance. It's nvmem_cell_read_u32, and it does exactly one thing but it does it flawlessly. ✨

🎀 NAME 🎀

nvmem_cell_read_u32 — read a cell value as a u32. that's it. that's the whole vibe. 🫶

✨ SYNOPSIS ✨

int nvmem_cell_read_u32 (struct device *dev , const char *cell_id , u32
*val );

🌸 ARGUMENTS 🌸

  • dev — the device that's requesting the nvmem cell. like, whose kid is this, basically. 👑
  • cell_id — the name of the nvmem cell you wanna read. yes, you have to know its name. no cap. 🎀
  • val — pointer to the output value. it's where the answer lands, so make sure it's pointing somewhere real, bestie. 💅

🦋 RETURN 🦋

0 on success or a negative errno. that's the whole deal — zero means slay, negative means something went sideways. 😭

💜 SEE ALSO 💜

Kernel file ./drivers/nvmem/core.c — plus literally the entire nvmem extended universe, and I am obsessed that they're all here:

like, the whole friend group showed up. 🌈

ngl, if val isn't a valid pointer, that's on you — the page doesn't promise any extra safety net beyond what's written here. 🙈

mwah 💋 — this gem dropped from the source file ./drivers/nvmem in the October 2026 release, stamped with the nvmem_cell_read_u32(9) header, and honestly? iconic. periodt. 💅✨

📦 where this page comes from