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| author | Mika Kuoppala | 2016-06-07 16:19:02 +0200 |
|---|---|---|
| committer | Mika Kuoppala | 2016-06-08 15:23:09 +0200 |
| commit | 17e0adf079a3bf2ba16880f6d5473b4ca7881545 (patch) | |
| tree | 9afa0952a1e4960fc11c95d8c9989583861e0bf4 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | drm/i915/kbl: Add WaDisableSDEUnitClockGating (diff) | |
| download | kernel-qcow2-linux-17e0adf079a3bf2ba16880f6d5473b4ca7881545.tar.gz kernel-qcow2-linux-17e0adf079a3bf2ba16880f6d5473b4ca7881545.tar.xz kernel-qcow2-linux-17e0adf079a3bf2ba16880f6d5473b4ca7881545.zip | |
drm/i915/edp: Add WaKVMNotificationOnConfigChange:bdw
According to bspec this workaround helps to reduce lag and improve
performance on edp.
Documentation suggests this for bdw and all gen9. However evidence
shows that this register is missing on gen9 and causing unclaimed mmio
access if we access it. So apply to bdw only where the reg
exists and can hold its value.
v2: drop skl
References: HSD#2134579
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-11-git-send-email-mika.kuoppala@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 4ea2253423dc..371b56cb7411 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6035,6 +6035,9 @@ enum skl_disp_power_wells { #define FORCE_ARB_IDLE_PLANES (1 << 14) #define SKL_EDP_PSR_FIX_RDWRAP (1 << 3) +#define CHICKEN_PAR2_1 _MMIO(0x42090) +#define KVM_CONFIG_CHANGE_NOTIFICATION_SELECT (1 << 14) + #define _CHICKEN_PIPESL_1_A 0x420b0 #define _CHICKEN_PIPESL_1_B 0x420b4 #define HSW_FBCQ_DIS (1 << 22) |