zynqmp_dp_update_vs_emph(9)

🎀 NAME 🎀

okay so this is zynqmp_dp_update_vs_emph(9) from the Kernel API Manual, and the name is literally doing the whole thing: zynqmp_dp_update_vs_emph — Update the training values. that's the assignment, bestie. 💅

✨ SYNOPSIS ✨

here's the signature, exact, no edits, no "I fixed the spacing" behavior:

int zynqmp_dp_update_vs_emph (struct zynqmp_dp *dp , u8 *train_set );

🌸 ARGUMENTS 🌸

• dp — the DisplayPort IP core structure. iconic struct behavior.
• train_set — a set of training values. yes, that is the description, and we are respecting it.

🦋 DESCRIPTION 🦋

This function updates the training values based on the request from the sink. The mapped values are predefined — they are not doing freeform jazz — and the values (vs, pe, pc) are from the device manual. 📖✨

💖 RETURN 💖

• 0 if vs and emph are updated successfully. slay. 🎉
• otherwise, it's the error code returned by drm_dp_dpcd_write. that's the whole return situation. 😭

👑 SEE ALSO 👑

Kernel file: ./drivers/gpu/drm/xlnx/zynqmp_dp.c

the whole crew:

• struct zynqmp_dp_link_config(9)
• struct zynqmp_dp_mode(9)
• struct zynqmp_dp_config(9)
• enum test_pattern(9)
• struct zynqmp_dp_test(9)
• struct zynqmp_dp_train_set_priv(9)
• struct zynqmp_dp(9)
• zynqmp_dp_phy_init(9)
• zynqmp_dp_phy_exit(9)
• zynqmp_dp_phy_probe(9)
• zynqmp_dp_phy_ready(9)
• zynqmp_dp_max_rate(9)
• zynqmp_dp_mode_configure(9)
• zynqmp_dp_adjust_train(9)
• zynqmp_dp_link_train_cr(9)
• zynqmp_dp_link_train_ce(9)
• zynqmp_dp_setup(9)
• zynqmp_dp_train(9)
• zynqmp_dp_train_loop(9)
• zynqmp_dp_aux_cmd_submit(9)
• zynqmp_dp_aux_init(9)
• zynqmp_dp_aux_cleanup(9)
• zynqmp_dp_update_misc(9)
• zynqmp_dp_set_format(9)
• zynqmp_dp_encoder_mode_set_transfer_unit(9)
• zynqmp_dp_encoder_mode_set_stream(9)
• zynqmp_dp_disp_connected_live_layer(9)
• zynqmp_dp_set_test_pattern(9)
• zynqmp_dp_enable_vblank(9)
• zynqmp_dp_disable_vblank(9)

source/version + date sign-off 🫶: ./drivers/gpu/drm/xlnx, October 2026, page tag zynqmp_dp_update_vs_emph(9). bye bestie, hydrate and dream in DisplayPort 💜