dc_update_m...with_padding(9)

💅 dc_update_m...with_padding(9) 💅

okay bestie, welcome to the Kernel API Manual — yes that's the manual name, and yes this page lives in it 🎀 no cap, we're abt to get into some display-clock math and honestly? it's giving main character energy ✨

---

🌸 NAME 🌸

dc_update_modified_pix_clock_for_dsc_with_padding — update pix_clk for dsc with padding 🦋

like... that's literally it. that's the whole vibe. she updates the pix_clk for dsc. with padding. periodt 💅

---

✨ SYNOPSIS ✨

void dc_update_modified_pix_clock_for_dsc_with_padding (const struct
dc_stream_state *stream , const struct dc_crtc_timing *timing , struct
dsc_padding_params *dsc_padding_params );

three pointers, one void, zero drama (well. some drama, it's clock math, keep reading) 💀

---

🫶 ARGUMENTS 🫶

• stream — Pointer to the stream structure. yes queen, the stream struct 💖
• timing — Pointer to the stream dc_crtc_timing structure. the timing info, iconic ✨
• dsc_padding_params — Pointer to the DSC padding parameters structure. the padding params, we stan 🌸

---

🔥 DESCRIPTION 🔥

okay so listen 👑 — this function updated the pix_clk for dsc with padding, and where does it keep it? it's stored in pipe_ctx, iykyk. the goal is literally:

make the OTG h_active time fit within the expected compressed active time, which gets calculated according to the HDMI spec 📺✨

and then?? H_total gets increased so it maintains the same OTG line time as before the increased pix_clk. like, we bumped the clock but not the line time, we're not messy 💅

no cap, it's just clockbookkeeping and honestly? she ate 🍓

---

🦋 SEE ALSO 🦋

• Kernel file ./drivers/gpu/drm/amd/display/dc/core/dc_resource.c 🎀
• resource_validate_probe_set(9)
• dc_validate_with_context(9)
• calculate_timing_params_for_dsc_with_padding(9)
• dc_validate_global_state(9)

go read those next, bestie, they're all in the group chat 😭🫶

---

mwah 💜 this page came to you from ./drivers/gpu/drm/amd/display/..., dated October 2026 — see you in the next manpage, slay! 💅✨🌈