From: José Roberto de Souza <jose.so...@intel.com>

According to BSpc if link standby is set on TGL+, PSR will not be
enabled. Vendors should not use panels that requires link standby and
even if they do, panel should assert a PSR error that will cause PSR to
be disabled.

BSpec: 50434
Signed-off-by: José Roberto de Souza <jose.so...@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demar...@intel.com>
Reviewed-by: Anshuman Gupta <anshuman.gu...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c 
b/drivers/gpu/drm/i915/display/intel_psr.c
index 4e6b3ae8a872..2429328f963e 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1243,8 +1243,8 @@ void intel_psr_init(struct drm_i915_private *dev_priv)
        if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
                /* HSW and BDW require workarounds that we don't implement. */
                dev_priv->psr.link_standby = false;
-       else
-               /* For new platforms let's respect VBT back again */
+       else if (INTEL_GEN(dev_priv) < 12)
+               /* For new platforms up to TGL let's respect VBT back again */
                dev_priv->psr.link_standby = dev_priv->vbt.psr.full_link;
 
        INIT_WORK(&dev_priv->psr.work, intel_psr_work);
-- 
2.23.0

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