cypress_nor_..._mode_nbytes(9)

✨ NAME ✨

okay so bestie, this is the cypress_nor_..._mode_nbytes(9) page from the Kernel API Manual, and the function it's hyping up is cypress_nor_set_addr_mode_nbytes — it sets the number of address bytes mode of current address mode. yes, that is the whole assignment. 💅

🌸 SYNOPSIS 🌸

int cypress_nor_set_addr_mode_nbytes (struct spi_nor *nor );

💅 ARGUMENTS 💅

• nor — pointer to a 'struct spi_nor'. that's the one and only argument, bestie 🫶

🎀 DESCRIPTION 🎀

so here's the vibe: it determines the current address mode by reading SR1 with different methods, then it queries CFR2V[7] to confirm. detective work, but make it SPI NOR ✨

and if that determination is failed, it doesn't just shrug — it force enters 4-byte address mode. no cap, that's the fallback. 😭

🔥 RETURN 🔥

• 0 — success, slay 👑
• -errno — otherwise, i.e. the error vibe 💀

🦋 SEE ALSO 🦋

Kernel file reference: ./drivers/mtd/spi-nor/spansion.c — plus struct spansion_nor_params(9) and these iconic little friends:

• spansion_nor_clear_sr(9)
• cypress_nor_sr_ready_and_clear(9)
• cypress_nor_quad_enable_volatile(9)
• cypress_nor_determine_addr_mode_by_sr1(9)
• cypress_nor_get_page_size(9)
• cypress_nor_set_octal_dtr(9)
• spansion_nor_sr_ready_and_clear(9)

cute sign-off bestie: source/version is ./drivers/mtd/spi-nor, the date on this page is October 2026, and the whole page is cypress_nor_..._mode_nbytes(9). bye and stay address-moded 💖🎀