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| author |   Oscar Mateo <oscar.mateo@intel.com> | 2017-11-08 15:59:44 -0800 |
|---|---|---|
| committer |   Chris Wilson <chris@chris-wilson.co.uk> | 2017-11-12 14:34:05 +0000 |
| commit | 1b790cd9bfa8dc897710b5cdc24895cfda3d5f09 (patch) | |
| tree | 44851022f35ad0f05d06f8686bc33647e65de128 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | drm/i915: Remove redundant intel_autoenable_gt_powersave() (diff) | |
| download | linux-dev-1b790cd9bfa8dc897710b5cdc24895cfda3d5f09.tar.xz linux-dev-1b790cd9bfa8dc897710b5cdc24895cfda3d5f09.zip | |
drm/i915: Remove Gen9 WAs with no effect
GEN8_CONFIG0 (0xD00) is a protected by a lock (bit 31) which is set by
the BIOS, so there is no way we can enable the three chicken bits
mandated by the WA (the BIOS should be doing it instead).
v2: Rebased
v3: Standalone patch
References: b033bb6d5d3a ("drm/i915/gen9: Enable must set chicken bits in config0 reg")
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1510185589-9100-2-git-send-email-oscar.mateo@intel.com
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index c1a56809f143..8e7f02e6008a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -75,9 +75,6 @@ static void gen9_init_clock_gating(struct drm_i915_private *dev_priv) I915_WRITE(CHICKEN_PAR1_1, I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP); - I915_WRITE(GEN8_CONFIG0, - I915_READ(GEN8_CONFIG0) | GEN9_DEFAULT_FIXES); - /* WaEnableChickenDCPR:skl,bxt,kbl,glk,cfl */ I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM); |