leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drm/i915: Disable tesselation clock gating on tgl A0

Browse Source 
Disable TEDOP clock gating flow by programming 0x20A0[19] = 1

References: HSDES#1407928979
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200207155138.30978-1-mika.kuoppala@linux.intel.com
This commit is contained in:
Mika Kuoppala 2020-02-07 17:51:37 +02:00 committed by Chris Wilson
parent fb5970da1b
commit 561db8296d
2 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/i915/gt/intel_workarounds.c
View File

@ -1352,6 +1352,11 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
wa_write_or(wal,
GEN7_SARCHKMD,
GEN7_DISABLE_SAMPLER_PREFETCH);
/* Wa_1407928979:tgl */
wa_write_or(wal,
GEN7_FF_THREAD_MODE,
GEN12_FF_TESSELATION_DOP_GATE_DISABLE);
}
if (IS_GEN(i915, 11)) {

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

@ -3165,6 +3165,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define GEN7_FF_THREAD_MODE _MMIO(0x20a0)
#define GEN7_FF_SCHED_MASK 0x0077070
#define GEN8_FF_DS_REF_CNT_FFME (1 << 19)
#define GEN12_FF_TESSELATION_DOP_GATE_DISABLE BIT(19)
#define GEN7_FF_TS_SCHED_HS1 (0x5 << 16)
#define GEN7_FF_TS_SCHED_HS0 (0x3 << 16)
#define GEN7_FF_TS_SCHED_LOAD_BALANCE (0x1 << 16)