STRUCT AMDGPU_HDMI_VSDB_INFO(9)

🎀 struct amdgpu_hdmi_vsdb_info — Kernel API Manual 💅

okay so bestie, welcome to the struct amdgpu_hdmi_vsdb_info(9) page ✨ this is the Kernel API Manual, and it's literally just one little struct living its best life in the AMDGPU HDMI-verse. it's giving "small but mighty" and we're obsessed 🫶

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✨ NAME ✨

struct amdgpu_hdmi_vsdb_info — the little guy whose entire job is to keep track of the VSDB info 👑 no cap, that's it, that's the gig.

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🌸 SYNOPSIS 🌸

here's the whole struct, copied exactly so you don't have to squint at anything 🔍

struct amdgpu_hdmi_vsdb_info {
    unsigned int amd_vsdb_version;
    bool freesync_supported;
    unsigned int min_refresh_rate_hz;
    unsigned int max_refresh_rate_hz;
    unsigned int freesync_mccs_vcp_code;
    bool replay_mode;
 };

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💖 Members 💖

okay let's meet the cast, one field at a time 🧚

• amd_vsdb_version — the Vendor Specific Data Block Version. use this to figure out which Vendor Specific InfoFrame (VSIF) you should be sending out. iykyk 💅
• freesync_supported — FreeSync Supported. yes/no, is the tea hot or not 🍓
• min_refresh_rate_hz — the FreeSync Minimum Refresh Rate, in Hz. the floor, the budget, the "at least this much" 😌
• max_refresh_rate_hz — the FreeSync Maximum Refresh Rate. the ceiling, the main character energy, no cap 🔥
• freesync_mccs_vcp_code — the MCCS VCP code for freesync state. the little code that tells you what's up with freesync 🎀
• replay_mode — Replay supported. periodt ✨

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🦋 Description 🦋

so here's the lore: AMDGPU supports FreeSync over HDMI by using the VSDB section, and this struct is the one keeping track of all the display-specific info about FreeSync 💜

literally its whole purpose. display-specific FreeSync deets, tracked, kept, archived, slay 🌈

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🌟 SEE ALSO 🌟

besties, go touch these too — same kernel file, same energy:

• Kernel file ./drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
• struct dm_compressor_info(9)
• struct dm_boot_time_crc_info(9)
• struct dmub_hpd_work(9)
• struct vblank_control_work(9)
• struct idle_workqueue(9)
• struct vupdate_offload_work(9)
• struct amdgpu_dm_luminance_data(9)
• struct amdgpu_dm_backlight_caps(9)
• struct dal_allocation(9)
• struct hpd_rx_irq_offload_work_queue(9)
• struct hpd_rx_irq_offload_work(9)
• struct amdgpu_display_manager(9)

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lowkey a whole friend group of structs, and our girl amdgpu_hdmi_vsdb_info is right there in the mix 💀💖

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and that's the page!! 🌸 source/version vibes come from ./drivers/gpu/drm/amd/display/..., dated October 2026, and the footer goes out to struct amdgp...mi_vsdb_info(9) — okay bye bestie, mwah 💋✨