of_iomap(9)

🦋 of_iomap(9) 🦋

okay so welcome to the Kernel API Manual, bestie — we're talking about of_iomap(9) today and it's lowkey iconic. 💅

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✨ NAME ✨

of_iomap — maps the memory mapped IO for a given device_node. That's the whole vibe. 💖

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🌸 SYNOPSIS 🌸

void __iomem * of_iomap (struct device_node *np , int index );

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🎀 ARGUMENTS 🎀

• np — the device whose io range will be mapped. Like, the device in question, bestie. 🫶
• index — index of the io range. Which range we're talking about, iykyk. ✨

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💜 DESCRIPTION 💜

Returns a pointer to the mapped memory. That's it, that's the description — slay. 💅

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🌈 SEE ALSO 🌈

Kernel file ./drivers/of/address.c — the source file, periodt. Then these besties right here:

• of_translate_dma_region(9)
• of_property_read_reg(9)
• of_dma_get_range(9)
• of_dma_get_max_cpu_address(9)
• of_dma_is_coherent(9)
• of_mmio_is_nonposted(9)
• of_address_to_resource(9)

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xoxo, your local kernel bestie 💜 — source/version: ./drivers/of, date: October 2026, page: of_iomap(9). 🫶✨