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* [i-g-t 1/2] tests/kms_vrr: Tweak flipline subtest
@ 2023-12-13  8:16 Bhanuprakash Modem
  2023-12-13  8:16 ` [i-g-t 2/2] HAX: DO_NOT_MERGE: Add vrr flipline test to BAT Bhanuprakash Modem
                   ` (4 more replies)
  0 siblings, 5 replies; 9+ messages in thread
From: Bhanuprakash Modem @ 2023-12-13  8:16 UTC (permalink / raw)
  To: igt-dev

As per the spec: If there is no flip request with in Vmax,
Hardware will terminate the Vblank at Vmax.

If we flip with the interval > Vmax, the expected refresh rate
could be: (Vmax + time left for the next flip + Vmin), and it
is very difficult to generalize. For low refresh rate panels
(like 40 - 60 Hz), result is not falling into the threshold.

Hence, tweak the test to increase the flip request interval.

Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
---
 tests/kms_vrr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/kms_vrr.c b/tests/kms_vrr.c
index 5c190cd8c..7cb7c3ef5 100644
--- a/tests/kms_vrr.c
+++ b/tests/kms_vrr.c
@@ -456,7 +456,7 @@ test_basic(data_t *data, enum pipe pipe, igt_output_t *output, uint32_t flags)
 	}
 
 	if (flags & TEST_FLIPLINE) {
-		rate = rate_from_refresh(range.min - 5);
+		rate = rate_from_refresh(range.min - 10);
 		result = flip_and_measure(data, output, pipe, rate, TEST_DURATION_NS);
 		igt_assert_f(result < 50,
 			     "Refresh rate (%u Hz) %"PRIu64"ns: Target VRR on threshold exceeded, result was %u%%\n",
-- 
2.40.0

^ permalink raw reply related	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2024-01-09 11:51 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-12-13  8:16 [i-g-t 1/2] tests/kms_vrr: Tweak flipline subtest Bhanuprakash Modem
2023-12-13  8:16 ` [i-g-t 2/2] HAX: DO_NOT_MERGE: Add vrr flipline test to BAT Bhanuprakash Modem
2023-12-13  9:53 ` [i-g-t 1/2] tests/kms_vrr: Tweak flipline subtest Bhanuprakash Modem
2024-01-09  5:54   ` Srinivas, Vidya
2024-01-09 10:17   ` Modem, Bhanuprakash
2024-01-09 11:51     ` Golani, Mitulkumar Ajitkumar
2023-12-13 12:53 ` ✓ CI.xeBAT: success for series starting with [i-g-t,1/2] tests/kms_vrr: Tweak flipline subtest (rev2) Patchwork
2023-12-13 13:06 ` ✓ Fi.CI.BAT: " Patchwork
2023-12-13 14:02 ` ✗ Fi.CI.IGT: failure " Patchwork

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