drm/i915/icl+: Always use TPS2 or TPS3 when exiting PSR1
authorJosé Roberto de Souza <jose.souza@intel.com>
Tue, 12 Mar 2019 19:57:43 +0000 (12:57 -0700)
committerJosé Roberto de Souza <jose.souza@intel.com>
Wed, 13 Mar 2019 21:20:21 +0000 (14:20 -0700)
commit8a9a5608a31b23a8da4be67285176dd4cacfa574
tree7a982780d00ae8759c2dfb9d594df5eee5e3d428
parent1e0c05c09037c593f0c06054a28c1021e13e8dfa
drm/i915/icl+: Always use TPS2 or TPS3 when exiting PSR1

When any other value than EDP_PSR_TP4_TIME_0US is set, TPS1 and TPS4
will be used to do the link training when exiting PSR1.
Happily the eDP panels tested so far was able to sync with source
even without HBR3/TPS4 support but let use the right training
pattern.

TPS4 support was added to PSR1 registers because HBR3/PSR
specification was not closed when ICL was freezed so if HBR3 was
supported by PSR, ICL would already be ready but it was not added to
specification so lets always disable TPS4.

v3: Missed ";" SPANK SPANK SPANK!!!

BSpec: 17524

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190312195743.8829-3-jose.souza@intel.com
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_psr.c