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From: "José Roberto de Souza" <jose.souza@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH 1/2] drm/i915/display: Implement Wa_14013723622
Date: Thu,  8 Apr 2021 13:49:16 -0700	[thread overview]
Message-ID: <20210408204917.254272-1-jose.souza@intel.com> (raw)

This WA fix some display glitches when the system is under high
memory pressure.

BSpec: 52890
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h | 3 +++
 drivers/gpu/drm/i915/intel_pm.c | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index cbf7a60afe54..f4a779643f4d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -12549,4 +12549,7 @@ enum skl_power_gate {
 #define TGL_ROOT_DEVICE_SKU_ULX		0x2
 #define TGL_ROOT_DEVICE_SKU_ULT		0x4
 
+#define CLKREQ_POLICY			_MMIO(0x101038)
+#define  CLKREQ_POLICY_MEM_UP_OVRD	REG_BIT(1)
+
 #endif /* _I915_REG_H_ */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 32f301ca3ab0..8e39e30036b2 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -7141,6 +7141,11 @@ static void gen12lp_init_clock_gating(struct drm_i915_private *dev_priv)
 	/* Wa_14011059788:tgl,rkl,adl_s,dg1 */
 	intel_uncore_rmw(&dev_priv->uncore, GEN10_DFR_RATIO_EN_AND_CHICKEN,
 			 0, DFR_DISABLE);
+
+	/* Wa_14013723622:tgl,rkl,dg1,adl-s */
+	if (DISPLAY_VER(dev_priv) == 12)
+		intel_uncore_rmw(&dev_priv->uncore, CLKREQ_POLICY,
+				 CLKREQ_POLICY_MEM_UP_OVRD, 0);
 }
 
 static void dg1_init_clock_gating(struct drm_i915_private *dev_priv)
-- 
2.31.1

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             reply	other threads:[~2021-04-08 20:46 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-08 20:49 José Roberto de Souza [this message]
2021-04-08 20:49 ` [Intel-gfx] [PATCH 2/2] Revert "drm/i915/tgl/psr: Fix glitches when doing frontbuffer modifications" José Roberto de Souza
2021-04-10 13:27   ` Mun, Gwan-gyeong
2021-04-08 23:44 ` [Intel-gfx] ✗ Fi.CI.SPARSE: warning for series starting with [1/2] drm/i915/display: Implement Wa_14013723622 Patchwork
2021-04-08 23:48 ` [Intel-gfx] ✗ Fi.CI.DOCS: " Patchwork
2021-04-09  0:11 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-04-09  3:06 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2021-04-12 16:44   ` Souza, Jose
2021-04-10 13:26 ` [Intel-gfx] [PATCH 1/2] " Mun, Gwan-gyeong

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