dm_test_link...y_coordinate(9)

💅 dm_test_link_supports_psrsu_missing_y_coordinate(9) — from the Kernel API Manual, bestie

okay so picture this: you're deep in the kernel, you're vibe-checking PSRSU link support, and the one thing that can ruin the whole party is a missing Y coordinate. this page is literally about that test. it's giving "one job, and it's checking you did it" energy. ✨

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🌸 NAME 🌸

dm_test_link_supports_psrsu_missing_y_coordinate — Y coordinate support is required, no cap. that's the whole plot. 🎀

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✨ SYNOPSIS ✨

void dm_test_link_supports_psrsu_missing_y_coordinate(struct kunit *test);

return type void, so like… don't @ her expecting a value back, she's not giving you one. 💅

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🦋 ARGUMENTS 🦋

• test — the KUnit test context. that's it. that's the whole argument list. she travels light. 🫶

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🌈 SEE ALSO 🌈

💜 Kernel file

./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_psr_test.c

that's where the whole squad lives, bestie. go say hi. 👑

🔥 The rest of the PSR test crew, fr fr

• dm_test_link_supports_psrsu_no_dmcub(9)
• dm_test_link_supports_psrsu_old_dcn(9)
• dm_test_link_supports_psrsu_panel_unsupported(9)
• dm_test_link_supports_psrsu_missing_alpm(9)
• dm_test_link_supports_psrsu_missing_granularity(9)
• dm_test_link_supports_psrsu_debug_mask_disabled(9)
• dm_test_link_supports_psrsu_temporarily_disabled(9)
• dm_test_set_psr_caps_null_link(9)
• dm_test_set_psr_caps_null_connector(9)
• dm_test_set_psr_caps_no_dmub_psr(9)
• dm_test_set_psr_caps_non_edp(9)
• dm_test_set_psr_caps_disconnected(9)
• dm_test_set_psr_caps_no_dpcd_psr(9)
• dm_test_set_psr_caps_edp1_disabled(9)
• dm_test_set_psr_caps_success_psr1(9)
• dm_test_psr_set_event_get_event_fails(9)
• dm_test_psr_set_event_already_set(9)
• dm_test_psr_set_event_updates_event(9)
• dm_test_psr_is_active_allowed_no_streams(9)
• dm_test_psr_is_active_allowed_null_link(9)
• dm_test_psr_is_active_allowed_requires_enabled_and_allowed(9)
• dm_test_psr_is_active_allowed_any_stream(9)

like, that's a full group chat right there. every single one of them got an invite. 💌

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ngl, the moral of this page is dead simple: if you're claiming PSRSU link support, the Y coordinate better be there. the test name says it, the manpage says it, I'm saying it. 😭

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and that's the whole read, bestie! sourced from ./drivers/gpu/drm/amd/display/... — dated October 2026 — and yeah, the title bar keeps going back to dm_test_link...y_coordinate(9) because it's iconic and refuses to be abbreviated differently. mwah, ily, go check those Y coordinates 💖🦋🍓