zynqmp_dp_mode_configure(9)

📦 version 7.3.1, in nixpkgs unstable

💅 zynqmp_dp_mode_configure(9) — the Kernel API Manual moment 🎀

okay bestie so this is a page from the Kernel API Manual about zynqmp_dp_mode_configure, and honestly? it's giving "small function, big responsibilities." let's get into it ✨

🦋 NAME 🦋

zynqmp_dp_mode_configure — configure the link values, periodt 💅

✨ SYNOPSIS ✨

int zynqmp_dp_mode_configure (struct zynqmp_dp *dp , int pclock , u8
current_bw );

like yes that's the whole signature, no notes 🫶

🌸 ARGUMENTS 🌸

  • dp — the DisplayPort IP core structure. this is the main character of the whole operation ngl 👑
  • pclock — the pixel clock for the display mode you're asking for. like, what refresh-and-resolution vibe are we going for ✨
  • current_bw — the current link rate. where we're at right now, before any downshifting happens 💀

💖 DESCRIPTION 💖

so what does it actually do? it finds the link configuration values — that's the rate and the lane count — for the requested pixel clock pclock. 🎀

the pclock gets stored in the mode so other functions can use it later. iykyk, it's a "leave a note for future you" situation 🫶

and the rate it returns is downshifted from the current rate current_bw. like, we're not out here upgrading, we're stepping it down, no cap 📉

🔥 RETURN 🔥

  • the current link rate code — slay, everything worked 💅
  • or -EINVAL — the vibe check failed, invalid argument energy 😭

⭐ SEE ALSO ⭐

the Kernel file ./drivers/gpu/drm/xlnx/zynqmp_dp.c, plus this whole friend group right here 💜:

and that's the page!! 🧚 from ./drivers/gpu/drm/xlnx, dated October 2026 — stay iconic, read your manpages, and remember: the link rate is downshifted, not deleted 💖✨🎀

📦 where this page comes from