Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-26 14:12:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915/kbl: Add WaDisableGamClockGating

Browse Source 
According to bspec we need to disable gam unit clock gating on
on kbl revids A0 and B0.

References: HSD#2226858, HSD#1944358
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-14-git-send-email-mika.kuoppala@intel.com
This commit is contained in:
Mika Kuoppala 2016-06-07 17:19:05 +03:00 committed by Mika Kuoppala
parent b033bb6d5d
commit 8aeb7f624f
2 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -6938,6 +6938,7 @@ enum skl_disp_power_wells {
#define EDRAM_SETS_IDX(cap) (((cap) >> 8) & 0x3)
#define GEN6_UCGCTL1 _MMIO(0x9400)
# define GEN6_GAMUNIT_CLOCK_GATE_DISABLE (1 << 22)
# define GEN6_EU_TCUNIT_CLOCK_GATE_DISABLE (1 << 16)
# define GEN6_BLBUNIT_CLOCK_GATE_DISABLE (1 << 5)
# define GEN6_CSUNIT_CLOCK_GATE_DISABLE (1 << 7)

5
drivers/gpu/drm/i915/intel_pm.c
View File

@ -6983,6 +6983,11 @@ static void kabylake_init_clock_gating(struct drm_device *dev)
if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
/* WaDisableGamClockGating:kbl */
if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) |
GEN6_GAMUNIT_CLOCK_GATE_DISABLE);
}
static void skylake_init_clock_gating(struct drm_device *dev)