drm/i915/dp: Initialize the link parameters during HW readout

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Initialize the DP link parameters during HW readout. These need to be
up-to-date at least for the MST topology probing, which depends on the
link rate and lane count programmed in DPCD. A follow-up patch will
program the DPCD values to reflect the maximum link parameters before
the first MST topology probing, but should do so only if the link is
disabled (link_trained==false).

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240722165503.2084999-6-imre.deak@intel.com

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Imre Deak 2024-07-22 19:54:54 +03:00

parent a64d5fe490

commit a3f91f405a

1 changed files with 4 additions and 1 deletions

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drivers/gpu/drm/i915/display/intel_dp.c

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