spi_nor_otp_erase_secr(9)

📦 version 7.3.1, in nixpkgs unstable

✨ spi_nor_otp_erase_secr ✨

Okay bestie, so this one's a Kernel API Manual situation, and it's literally about wiping a security register clean — like hitting factory reset on one specific little ✨special✨ region of your flash. No cap, it's giving "small function, big responsibility" energy. 💅

🌸 SYNOPSIS 🌸

int spi_nor_otp_erase_secr (struct spi_nor *nor , loff_t addr );

Yep, that's the whole thing. Three arguments worth of vibe, one int coming back at you. 🎀

🦋 ARGUMENTS 🦋

  • nor — a pointer to struct spi_nor. That's your flash chip's whole identity, bestie — hand it over so the function knows who it's working with. 🫶
  • addr — the offset of the security register that's getting erased. Like, which one. Be specific. 👑

💖 DESCRIPTION 💖

So what it actually does: it erases a security register by firing off the SPINOR_OP_ESECR command. That's the whole move. Clean, simple, iconic. ⭐

Now — if you're sitting there like "okay but what even is a security register?", totally fair, not me judging. The original docs say to go read the documentation of spi_nor_otp_read_secr for more info on the term "security register". That's your lore drop, iykyk. 📖

Also! Little detail that matters: this method is used on GigaDevice and Winbond flashes. So if you're on different hardware, vibe check your chip first. 🔥

🌈 RETURN 🌈

  • 0 on success — slay, we ate 💅
  • -errno otherwise — so, a negative error code, meaning something did not go according to plan 😭

🎀 SEE ALSO 🎀

Kernel file ./drivers/mtd/spi-nor/otp.c, plus the whole friend group:

Go read them, they're all part of the same little OTP squad. 🧚

Bestie reminder from your girl: this page is a Kernel API Manual entry living under ./drivers/mtd/spi-nor, and it's dated October 2026. That's the source, the path, and the date — all present and accounted for, periodt. 💜🌸

Later babe, go erase responsibly 🦋✨

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