winbond_nor_write_ear(9)

💅 winbond_nor_write_ear(9)

okay so bestie, welcome to the Kernel API Manual ✨ — this one lives in the Linux kernel's MTD SPI-NOR corner and it's literally the glow-up moment for your flash chip's address game. The function is winbond_nor_write_ear, and yes, "ear" is the Extended Address Register, not the thing on the side of your head 💀

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✨ NAME ✨

winbond_nor_write_ear — Write Extended Address Register. that's it. that's the whole vibe 🎀

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🌸 SYNOPSIS 🌸

int winbond_nor_write_ear (struct spi_nor *nor , u8 ear );

she takes two things and returns an int, no cap 🫶

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🦋 ARGUMENTS 🦋

• nor — pointer to struct spi_nor. yeah, the big one. the main character of the SPI-NOR universe 👑
• ear — value to write to the Extended Address Register. this is the u8 you're shoving into the EAR, so pick it wisely 💅

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⭐ RETURN ⭐

0 on success, -errno otherwise. so like, zero is the slay, and anything negative is the kernel telling you "not today bestie" 😭

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/mtd/spi-nor/winbond.c — the actual home of all this 💖
• winbond_nor_select_die(9)
• winbond_nor_set_4byte_addr_mode(9)

both of those are fr fr worth a read if you're deep in the Winbond lore, iykyk 🧚

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lowkey important: this page is part of the Kernel API Manual, so if something looks off, it's the kernel's vibe, not mine 🙈

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mwah 💋 that's the whole page, and it's giving documentation excellence. this gem comes from ./drivers/mtd/spi-nor and the version/date situation is October 2026 — so yeah, she's from the future and she's iconic for it ⭐🦋🌸