TGL PSR2 hardware tracking shows momentary flicker and screen shift if
TGL Display stepping is B1 from A0.
It has been fixed from TGL Display stepping C0.
HSDES: 18015970021
HSDES: 2209313811
BSpec: 55378
Cc: José Roberto de Souza <jose.so...@intel.com>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong....@intel.com>
---
drivers/gpu/drm/i915/display/intel_psr.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
b/drivers/gpu/drm/i915/display/intel_psr.c
index 4ad756e238c5..2cc9eeab4baf 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -739,6 +739,12 @@ static bool intel_psr2_config_valid(struct intel_dp
*intel_dp,
return false;
}
+ /* Wa_2209313811 */
+ if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B1)) {
+ drm_dbg_kms(&dev_priv->drm, "PSR2 is not supported this Display
stepping\n");
+ return false;
+ }
+
/* Wa_16011181250 */
if (IS_ROCKETLAKE(dev_priv) || IS_ALDERLAKE_S(dev_priv)) {
drm_dbg_kms(&dev_priv->drm, "PSR2 is defeatured for this
platform\n");
--
2.30.1
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