This WA fix some display glitches when the system is under high memory pressure.
BSpec: 52890 Cc: Gwan-gyeong Mun <[email protected]> Signed-off-by: José Roberto de Souza <[email protected]> --- 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 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
