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* [Intel-gfx] [PATCH] drm/i915/display: Disable PSR2 if TGL Display stepping is B1 from A0
@ 2021-04-22  9:54 Gwan-gyeong Mun
  2021-04-22 10:55 ` [Intel-gfx] ✗ Fi.CI.DOCS: warning for " Patchwork
                   ` (3 more replies)
  0 siblings, 4 replies; 6+ messages in thread
From: Gwan-gyeong Mun @ 2021-04-22  9:54 UTC (permalink / raw)
  To: intel-gfx

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.souza@intel.com>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@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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^ permalink raw reply related	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2021-04-22 16:08 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-04-22  9:54 [Intel-gfx] [PATCH] drm/i915/display: Disable PSR2 if TGL Display stepping is B1 from A0 Gwan-gyeong Mun
2021-04-22 10:55 ` [Intel-gfx] ✗ Fi.CI.DOCS: warning for " Patchwork
2021-04-22 11:18 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-04-22 14:39 ` [Intel-gfx] [PATCH] " Souza, Jose
2021-04-22 16:07   ` Mun, Gwan-gyeong
2021-04-22 15:29 ` [Intel-gfx] ✓ Fi.CI.IGT: success for " Patchwork

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