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
v2: Add checking of PSR2 manual tracking (Jose)
Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_psr.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 4ad756e238c5..17cbdd7805a2 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -817,6 +817,13 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
}
}
+ /* Wa_2209313811 */
+ if (!crtc_state->enable_psr2_sel_fetch &&
+ IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B1)) {
+ drm_dbg_kms(&dev_priv->drm, "PSR2 HW tracking is not supported this Display stepping\n");
+ return false;
+ }
+
if (!crtc_state->enable_psr2_sel_fetch &&
(crtc_hdisplay > psr_max_h || crtc_vdisplay > psr_max_v)) {
drm_dbg_kms(&dev_priv->drm,
--
2.30.1
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