winbond_nor...te_addr_mode(9)

💅 winbond_nor_set_4byte_addr_mode(9) 💅

okay so this is a page straight out of the Kernel API Manual — yes, the real one, the Kernel API Manual, bestie, we're in the big leagues now 🎀 — and it's all about flipping a Winbond flash chip into (or out of) 4-byte address mode. iconic behavior honestly.

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✨ NAME ✨

winbond_nor_set_4byte_addr_mode — Set 4-byte address mode for Winbond flashes.

like, that's the whole vibe. it sets the 4-byte address mode. for Winbond flashes specifically. no cap. 🦋

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🌸 SYNOPSIS 🌸

int winbond_nor_set_4byte_addr_mode (struct spi_nor *nor , bool enable );

she takes two things and returns an int. that's her whole personality 💅

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🫶 ARGUMENTS 🫶

• nor — pointer to struct spi_nor. literally just a pointer to your struct spi_nor, bestie, nothing spooky going on here ✨
• enable — true to enter the 4-byte address mode, false to exit the 4-byte address mode. so like... true = going in, false = getting out. it's giving ✨doors✨ 🔥

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🌈 RETURN 🌈

• 0 on success 🎉 slay!
• -errno otherwise 😭 i.e. you get a negative errno back and you should probably pay attention to it, fr fr

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👑 SEE ALSO 👑

• Kernel file ./drivers/mtd/spi-nor/winbond.c — the source of truth, the main character 💜
• winbond_nor_select_die(9)
• winbond_nor_write_ear(9)

like obviously go read those too, iykyk 🧚

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ngl if you're poking at Winbond flash address modes, read the actual source file before you go touching things — she's a kernel file, not a vibe, and the details live over there 🫶

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okay that's the whole page, mwah 💖 this gem is from ./drivers/mtd/spi-nor, dated October 2026, and honestly? she ate. periodt. 🍓🌸⭐