device_is_big_endian(9)

✨ device_is_big_endian(9) ✨

okay so bestie, we're in the Kernel API Manual today and the star of the show is device_is_big_endian(9) — literally the glow-up check for your device's endianness. 💅

🎀 NAME 🎀

device_is_big_endian — check if a device has BE registers

🌸 SYNOPSIS 🌸

bool device_is_big_endian (const struct device *dev );

🦋 ARGUMENTS 🦋

• dev — Pointer to the struct device 👈 that's the whole vibe, just hand over your device pointer and we'll tell you what's what

⭐ RETURN ⭐

Returns true if the device has a "big-endian" property, or if the kernel was compiled for BE and the device has a "native-endian" property. Returns false otherwise. no cap, that's the whole rule 🫶

💖 DESCRIPTION 💖

So here's the tea ☕: callers would nominally use ioread32be/iowrite32be if device_is_big_endian == true, or readl/writel otherwise. it's giving "pick the right accessor, bestie" 🔥

🌈 SEE ALSO 🌈

Kernel file ./include/linux/property.h device_is_compatible(9), fwnode_handle_put(9), struct software_node_ref_args(9), struct property_entry(9), struct software_node(9)

and that's the whole page, bestie 💜 mwah. this icon lives in ./include/linux, dated October 2026, and yes — the footer said device_is_big_endian(9) too, so we're booked-ending this exactly how we started. periodt. 🎀✨👑