spi_nor_parse_sfdp(9)

💅 spi_nor_parse_sfdp(9) — Kernel API Manual 💅

💖 NAME 💖

spi_nor_parse_sfdp — parse the Serial Flash Discoverable Parameters ✨

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✨ SYNOPSIS ✨

okay so the signature is literally:

int spi_nor_parse_sfdp (struct spi_nor *nor );

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🎀 ARGUMENTS 🎀

• nor — pointer to a struct spi_nor 👀. That's the whole argument, bestie.

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🦋 DESCRIPTION 🦋

okay so the Serial Flash Discoverable Parameters are described by the JEDEC JESD216 specification 💅. This is a standard which tends to be supported by almost all (Q)SPI memory manufacturers 🫶. Those hard-coded tables let us learn at runtime the main parameters needed to perform basic SPI flash operations, such as Fast Read, Page Program, or Sector Erase commands 🌸.

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🔥 RETURN 🔥

0 on success, -errno otherwise 💖. That's the whole mood.

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🌈 SEE ALSO 🌈

• kernel file: ./drivers/mtd/spi-nor/sfdp.c 📁
• spi_nor_read_raw(9)
• spi_nor_read_sfdp(9)
• spi_nor_read_sfdp_dma_unsafe(9)
• spi_nor_set_erase_settings_from_bfpt(9)
• spi_nor_map_cmp_erase_type(9)
• spi_nor_sort_erase_mask(9)
• spi_nor_regions_sort_erase_types(9)
• spi_nor_parse_bfpt(9)
• spi_nor_smpt_addr_nbytes(9)
• spi_nor_smpt_read_dummy(9)
• spi_nor_get_map_in_use(9)
• spi_nor_region_check_overlay(9)
• spi_nor_init_non_uniform_erase_map(9)
• spi_nor_parse_smpt(9)
• spi_nor_parse_4bait(9)
• spi_nor_parse_profile1(9)
• spi_nor_parse_sccr(9)
• spi_nor_parse_sccr_mc(9)
• spi_nor_post_sfdp_fixups(9)
• spi_nor_check_sfdp_signature(9)

💖 xoxo, your kernel bestie — source: ./drivers/mtd/spi-nor, date: October 2026, page: spi_nor_parse_sfdp(9) ✨