usb4_port_a...t_link_width(9)

📦 version 7.3.1, in nixpkgs unstable

okay so this is a page from the Kernel API Manual bestie, and it's about one very specific little function in the Thunderbolt/USB4 driver. buckle up 🫶

🌸 NAME 🌸

usb4_port_asym_set_link_width — sets the link width to asymmetric or symmetric, no cap 💅

🎀 SYNOPSIS 🎀

int usb4_port_asym_set_link_width (struct tb_port *port , enum tb_link_width width );

like, that's the whole signature. short king 👑

🦋 ARGUMENTS 🦋

  • port — a USB4 port. the port in question. your main character port 🌟
  • width — the asymmetric width you wanna configure it to. literally the width. the asymmetric one 🫶

💖 DESCRIPTION 💖

so what it does: it sets the USB4 port link width to width. that's it, that's the vibe ✨

and here's the important part — you can call this for widths where usb4_port_asym_width_supported returned true. like, check first?? don't just vibe-check it and hope 😭 that's the rule, fr fr.

🌈 RETURN 🌈

  • 0 on success — slay, it worked 👑
  • negative errno otherwise — not slay, something went wrong 💀

🧚 SEE ALSO 🧚

these all live in the kernel file ./drivers/thunderbolt/usb4.c — go be nosy, iykyk 💜

that's the whole page bestie, go configure some asymmetric widths responsibly 💅✨

sign-off time 🎀: this one lives under ./drivers/thunderbolt and the page is dated October 2026 — mwah, hope that helps 🫶

📦 where this page comes from