ENUM DRM_DP_MST_MODE(9)

💖 NAME 💖

okay bestie, welcome to enum drm_dp_mst_mode(9) — this one is literally all about the sink’s MST mode capability. like, what can this display situation actually do? that’s the vibe check. 🫶

✨ SYNOPSIS ✨

enum drm_dp_mst_mode {
    DRM_DP_SST ,
    DRM_DP_MST ,
    DRM_DP_SST_SIDEBAND_MSG

};

🎀 Constants 🎀

• DRM_DP_SST — nope energy fr fr: the sink does not support MST, and it also does not support single stream sideband messaging. not the one. 💀
• DRM_DP_MST — okay main character!! this sink supports MST, more than one stream, and single stream sideband messaging. ate. 👑
• DRM_DP_SST_SIDEBAND_MSG — cute but limited: the sink supports only one stream and single stream sideband messaging. one stream only, bestie. 🎀

🌈 SEE ALSO 🌈

so if you wanna keep scrolling through the lore, check out the kernel file ./include/drm/display/drm_dp_mst_helper.h and these iconic little guys:

• struct drm_dp_mst_port(9)
• struct drm_dp_mst_branch(9)
• struct drm_dp_mst_atomic_payload(9)
• struct drm_dp_mst_topology_state(9)
• struct drm_dp_mst_topology_mgr(9)
• __drm_dp_mst_state_iter_get(9)
• for_each_oldnew_mst_mgr_in_state(9)
• for_each_old_mst_mgr_in_state(9)
• for_each_new_mst_mgr_in_state(9)

lowkey a whole little enum family reunion in here. read the docs, hydrate, and stan safe traversal. 💅✨

shoutout to the source ./include/drm/display and the date October 2026 — mwah, that’s the whole page, bestie 💋🦋