diff options
| author | José Roberto de Souza <jose.souza@intel.com> | 2021-04-08 13:49:16 -0700 |
|---|---|---|
| committer | José Roberto de Souza <jose.souza@intel.com> | 2021-04-12 09:45:35 -0700 |
| commit | 41c70d2b7170274b8aa93b7f1d33eabd55871a0e (patch) | |
| tree | caef39d309afea1e058118b43aeb9692d80a2f07 | |
| parent | c87eba80470e4103f4c2cbb915e297e5242f85fa (diff) | |
drm/i915/display: Implement Wa_14013723622
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>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Tested-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210408204917.254272-1-jose.souza@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 5 |
2 files changed, 8 insertions, 0 deletions
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 3ecbd62915cf..3f6d8b502a61 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) |