drm/i915/ddi: Don't frob the DP link scramble disabling flag

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According to BSpec this flag should not be changed while the DDI
function is enabled. On BDW+ the DP_TP_CTL register spec also states it
explicitly that the HW takes care of enabling/disabling the scrambling
for training patterns (and it must stay enabled for normal pixel
output). Assume that this HW automatic handling of scrambling is also
true for HSW.

BSpec: 8013, 7557, 50484

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200714153141.10280-1-imre.deak@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Imre Deak 2020-07-14 18:31:40 +03:00 • committed by Rodrigo Vivi

parent 366ec167ea

commit 963501bdd0

1 changed files with 1 additions and 7 deletions

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

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