STRUCT DMUB_RB_CMD_PLAT_54186_WA(9)

🌸 struct dmub_...LAT_54186_wa(9) — Kernel API Manual 🌸

okay bestie, we're diving into the Kernel API Manual today and the star of the show is literally right there in the header: struct dmub_...LAT_54186_wa(9). yes it has an ellipsis in the middle, no that's not a typo on my part, that's just how the header is formatted 💅

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✨ NAME ✨

struct dmub_rb_cmd_PLAT_54186_wa — the Underflow workaround command. that's it, that's the whole vibe. it's giving "we had a problem and this struct is the fix" 🫶

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🎀 SYNOPSIS 🎀

here's the whole shape of her, no cap, copied exactly:

struct dmub_rb_cmd_PLAT_54186_wa {
    struct dmub_cmd_header header;
    struct dmub_cmd_PLAT_54186_wa flip;
};

two members, that's the whole thing. header is a struct dmub_cmd_header and flip is a struct dmub_cmd_PLAT_54186_wa. she's compact, she's iconic, she's got main character energy ✨

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🦋 Members 🦋

so like… the Members section is here, but it's lowkey empty 💀 nothing listed under it in this page. the two members you do know about are right up there in the SYNOPSIS (header and flip), so go look at those if that's what you came for. i don't make the rules, i just report them 🙈

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💜 SEE ALSO 💜

these are the related pages, and yes there are a lot of them. i'm listing every single one because you deserve the full set, bestie:

• Kernel file ./drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
• union dmub_addr(9)
• struct dmub_cursor_offload_pipe_data_dcn30_v1(9)
• struct dmub_cursor_offload_pipe_data_dcn401_v1(9)
• struct dmub_cursor_offload_pipe_data_dcn60_v1(9)
• struct dmub_cursor_offload_pipe_data_v1(9)
• struct dmub_cursor_offload_payload_data_v1(9)
• struct dmub_cursor_offload_stream_v1(9)
• struct dmub_cursor_offload_v1(9)
• union dmub_fw_meta_feature_bits(9)
• struct dmub_fw_meta_info(9)
• union dmub_fw_meta(9)
• struct dmcub_trace_buf_entry(9)
• union dmub_fw_boot_status(9)
• enum dmub_fw_boot_status_bit(9)
• enum dmub_cursor_offload_comand_type(9)
• union dmub_fw_boot_options(9)
• enum dmub_shared_state_feature_id(9)
• struct dmub_shared_state_ips_fw(9)
• struct dmub_shared_state_ips_driver(9)
• struct dmub_shared_state_cursor_offload_v1(9)
• struct dmub_shared_state_feature_block(9)
• union dmub_gpint_data_register(9)
• enum dmub_out_cmd_type(9)
• struct dmub_cmd_header(9)
• struct dmub_rb_cmd_common(9)
• struct dmub_cmd_PLAT_54186_wa(9)
• enum dmub_cmd_mall_type(9)
• struct dmub_rb_cmd_mall(9)
• enum dmub_cmd_cab_type(9)
• struct dmub_rb_cmd_cab_for_ss(9)
• enum dmub_fams2_allow_delay_check_mode(9)
• enum dmub_cmd_idle_opt_type(9)
• struct dmub_rb_cmd_idle_opt_dcn_restore(9)
• struct dmub_dcn_notify_idle_cntl_data(9)
• struct dmub_rb_cmd_idle_opt_dcn_notify_idle(9)
• enum dmub_idle_opt_dc_power_state(9)
• struct dmub_idle_opt_set_dc_power_state_data(9)
• struct dmub_rb_cmd_idle_opt_set_dc_power_state(9)
• struct dmub_clocks(9)
• enum dmub_cmd_clk_mgr_type(9)
• struct dmub_rb_cmd_clk_mgr_notify_clocks(9)
• struct dmub_cmd_digx_encoder_control_data(9)
• struct dmub_rb_cmd_digx_encoder_control(9)
• struct dmub_cmd_set_pixel_clock_data(9)
• struct dmub_cmd_enable_disp_power_gating_data(9)
• struct dmub_rb_cmd_enable_disp_power_gating(9)
• struct dmub_dig_transmitter_control_data_v1_7(9)
• union dmub_cmd_dig1_transmitter_control_data(9)
• struct dmub_rb_cmd_dig1_transmitter_control(9)
• struct dmub_rb_cmd_domain_control_data(9)
• struct dmub_rb_cmd_domain_control(9)
• struct dmub_rb_cmd_dpphy_init(9)
• enum dp_aux_request_action(9)
• enum aux_return_code_type(9)
• enum aux_channel_type(9)
• struct aux_transaction_parameters(9)
• struct dmub_rb_cmd_hpd_sense_notify(9)
• enum dmub_phy_fsm_state(9)
• enum dmub_abm_ace_curve_type(9)
• enum dmub_abm_histogram_type(9)
• enum dmub_cmd_panel_cntl_type(9)
• struct dmub_cmd_panel_cntl_data(9)
• struct dmub_rb_cmd_panel_cntl(9)
• struct dmub_cmd_cable_id_input(9)
• struct dmub_cmd_cursor_offload_init_data(9)
• struct dmub_rb_cmd_cursor_offload_init(9)
• struct dmub_cmd_cursor_offload_stream_data(9)
• struct dmub_rb_cmd_cursor_offload_stream_cntl(9)
• union dmub_rb_cmd(9)
• union dmub_rb_out_cmd(9)
• struct dmub_rb_init_params(9)
• struct dmub_rb(9)

ngl that list ate. seventy-something pages of pure DMUB lore. iykyk 🧚

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and that's the whole page, bestie!! 💖 the source path is ./drivers/gpu/drm/amd/display/... and the date on this one is October 2026, so like… future-coded of her honestly. signed off the way the footer always does, with struct dmub_...LAT_54186_wa(9) giving us one last little ellipsis moment ⭐ slay, go read the kernel source, periodt 🎀