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* [PATCH v2 0/3] Fix value being written to DDI_CLK_VALFREQ
@ 2026-08-11 17:58 Suraj Kandpal
  2026-08-11 17:58 ` [PATCH v2 1/3] drm/i915/ddi: add helper to compute DDI clock frequency Suraj Kandpal
                   ` (5 more replies)
  0 siblings, 6 replies; 14+ messages in thread
From: Suraj Kandpal @ 2026-08-11 17:58 UTC (permalink / raw)
  To: intel-xe, intel-gfx; +Cc: ankit.k.nautiyal, Suraj Kandpal

Currently we write the portclock as is into DDI_CLK_VALFREQ register.
Which is fine for HDMI TMDS and DP 8b/10b encoding but for DP
128b/132b and HDMI FRL port clock needs to be modified to the
appropriate symbol clock and then be written into this register.
H/w has not thrown a bug yet because this is a validation register
and has no functional impact on H/w.

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>

Suraj Kandpal (3):
  drm/i915/ddi: add helper to compute DDI clock frequency
  drm/i915/cx0: program DDI_CLK_VALFREQ with DDI clock frequency
  drm/i915/lt_phy: program DDI_CLK_VALFREQ with DDI clock frequency

 drivers/gpu/drm/i915/display/intel_cx0_phy.c |  5 +++--
 drivers/gpu/drm/i915/display/intel_ddi.c     | 11 +++++++++++
 drivers/gpu/drm/i915/display/intel_ddi.h     |  1 +
 drivers/gpu/drm/i915/display/intel_lt_phy.c  |  6 ++++--
 4 files changed, 19 insertions(+), 4 deletions(-)

-- 
2.34.1


^ permalink raw reply	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2026-08-12 17:26 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-08-11 17:58 [PATCH v2 0/3] Fix value being written to DDI_CLK_VALFREQ Suraj Kandpal
2026-08-11 17:58 ` [PATCH v2 1/3] drm/i915/ddi: add helper to compute DDI clock frequency Suraj Kandpal
2026-08-12  3:43   ` Nautiyal, Ankit K
2026-08-11 17:58 ` [PATCH v2 2/3] drm/i915/cx0: program DDI_CLK_VALFREQ with " Suraj Kandpal
2026-08-12  3:49   ` Nautiyal, Ankit K
2026-08-12  4:24     ` Kandpal, Suraj
2026-08-12  9:03       ` Jani Nikula
2026-08-12  9:11         ` Kandpal, Suraj
2026-08-11 17:58 ` [PATCH v2 3/3] drm/i915/lt_phy: " Suraj Kandpal
2026-08-12  3:50   ` Nautiyal, Ankit K
2026-08-12 17:26     ` Rodrigo Vivi
2026-08-11 18:05 ` ✓ CI.KUnit: success for Fix value being written to DDI_CLK_VALFREQ (rev2) Patchwork
2026-08-11 19:39 ` ✓ i915.CI.BAT: " Patchwork
2026-08-12  0:12 ` ✓ i915.CI.Full: " Patchwork

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