drm_of_get_d...count_remote(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_of_get_d...count_remote(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ we're looking at drm_of_get_d...count_remote today and honestly? she's a little niche but she serves 🎀

🌸 NAME 🌸

drm_of_get_data_lanes_count_remote — get that DSI/(e)DP data lane count by endpoint, no cap 💅

✨ SYNOPSIS ✨

int drm_of_get_data_lanes_count_remote (const struct device_node *port ,
   int port_reg , int reg , const unsigned int min , const unsigned int max );

like, that's the whole signature, literally copy it exactly, don't @ me 🫶

🦋 ARGUMENTS 🦋

  • port — the DT port node of the DSI/(e)DP source or sink. either one bestie, she's flexible 💖
  • port_reg — identifier (the value of the reg property) of the parent port node. yes, the parent one, keep up 🌸
  • reg — identifier (the value of the reg property) of the endpoint node. that's the child one, we love a family dynamic 🎀
  • min — minimum supported number of data lanes. the floor, the bare minimum, respect it ✨
  • max — maximum supported number of data lanes. the ceiling, the limit, the "know your worth" 💅

🔥 DESCRIPTION 🔥

so what she does is: count the DT "data-lanes" property elements in the remote endpoint and then check for validity 👑

the way that this variant specifically uses the endpoint specifier — that's her whole thing, that's her main character energy 🦋

⭐ RETURN ⭐

  • min..max — positive integer count of "data-lanes" elements. slay, we got numbers 🌈
  • -EINVAL — the "data-lanes" property is unsupported. it's giving invalid, bestie 😭
  • -ENODEV — the "data-lanes" property is missing. literally nowhere to be found, ghosted 💀

🧚 SEE ALSO 🧚

like, read them all, they're the friend group and they all ate 💅✨

ok that's the page!! go count some lanes, bestie 🫶

mwah 💜 this little love letter lives in ./drivers/gpu/drm, dated October 2026 — that's the source, the version and the date all in one cute sign-off, periodt 🎀💖

📦 where this page comes from