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* [PATCH v1 0/2] tests/kms_hdmi_inject: Add low refresh rate subtests
@ 2026-04-01  7:26 Mohammed Bilal
  2026-04-01  7:26 ` [PATCH v1 1/2] tests/kms_hdmi_inject: Add inject-low-refresh-fixed-clock subtest Mohammed Bilal
                   ` (5 more replies)
  0 siblings, 6 replies; 7+ messages in thread
From: Mohammed Bilal @ 2026-04-01  7:26 UTC (permalink / raw)
  To: igt-dev; +Cc: kunal1.joshi, Mohammed Bilal

This series adds two subtests to validate low refresh rate (11Hz, 10Hz,
5Hz, 4Hz) mode handling on HDMI connectors. The tests verify driver
behavior around the hardware minimum pixel clock threshold (34.38 MHz).

Patch 1 adds a positive test that validates low refresh rates are
achievable when pixel clock is maintained at the hardware minimum by
adjusting vtotal.

Patch 2 adds a negative test that validates the driver correctly rejects
modes when the standard pixel clock calculation drops below the hardware
minimum.

Together these tests ensure the driver properly enforces hardware
constraints while still supporting valid low refresh rate configurations.

Mohammed Bilal (2):
  tests/kms_hdmi_inject: Add inject-low-refresh-fixed-clock subtest
  tests/kms_hdmi_inject: Add inject-low-refresh-default-clock subtest

 tests/kms_hdmi_inject.c | 295 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 295 insertions(+)

-- 
2.48.1


^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2026-04-01 23:54 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-04-01  7:26 [PATCH v1 0/2] tests/kms_hdmi_inject: Add low refresh rate subtests Mohammed Bilal
2026-04-01  7:26 ` [PATCH v1 1/2] tests/kms_hdmi_inject: Add inject-low-refresh-fixed-clock subtest Mohammed Bilal
2026-04-01  7:26 ` [PATCH v1 2/2] tests/kms_hdmi_inject: Add inject-low-refresh-default-clock subtest Mohammed Bilal
2026-04-01  8:48 ` ✓ Xe.CI.BAT: success for tests/kms_hdmi_inject: Add low refresh rate subtests Patchwork
2026-04-01  9:01 ` ✓ i915.CI.BAT: " Patchwork
2026-04-01 13:54 ` ✗ Xe.CI.FULL: failure " Patchwork
2026-04-01 23:53 ` ✗ i915.CI.Full: " Patchwork

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