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drm/i915/gen9: Add WaEnableChickenDCPR

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Workaround for display underrun issues with Y & Yf Tiling.
Set this on all gen9 as stated by bspec.

v2: proper workaround name

References: HSD#2136383, BSID#857
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-22-git-send-email-mika.kuoppala@intel.com
This commit is contained in:
Mika Kuoppala
2016-06-07 17:19:13 +03:00
committed by Mika Kuoppala
parent 954337aa96
commit 590e8ff04b
2 changed files with 7 additions and 0 deletions
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drivers/gpu/drm/i915/i915_reg.h
+3
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@@ -6067,6 +6067,9 @@ enum skl_disp_power_wells {
#define HSW_NDE_RSTWRN_OPT _MMIO(0x46408)
#define RESET_PCH_HANDSHAKE_ENABLE (1<<4)
#define GEN8_CHICKEN_DCPR_1 _MMIO(0x46430)
#define MASK_WAKEMEM (1<<13)
#define SKL_DFSM _MMIO(0x51000)
#define SKL_DFSM_CDCLK_LIMIT_MASK (3 << 23)
#define SKL_DFSM_CDCLK_LIMIT_675 (0 << 23)