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drm/i915/ehl: Restrict w/a 1607087056 for EHL/JSL 

This w/a is fixed in B0 stepping and needs to be restricted for
A0 stepping only.
Bspec: 33451

Signed-off-by: Swathi Dhanavanthri <swathi.dhanavanthri@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200512180050.6785-1-swathi.dhanavanthri@intel.com
This commit is contained in:
Swathi Dhanavanthri 2020-05-12 11:00:50 -07:00 committed by José Roberto de Souza
parent 73e28cc40b
commit 61b088c537
2 changed files with 12 additions and 4 deletions
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5
drivers/gpu/drm/i915/gt/intel_workarounds.c
View File

@ -917,11 +917,14 @@ icl_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
GAMT_CHKN_BIT_REG,
GAMT_CHKN_DISABLE_L3_COH_PIPE);
/* Wa_1607087056:icl */
/* Wa_1607087056:icl,ehl,jsl */
if (IS_ICELAKE(i915) ||
IS_EHL_REVID(i915, EHL_REVID_A0, EHL_REVID_A0)) {
wa_write_or(wal,
SLICE_UNIT_LEVEL_CLKGATE,
L3_CLKGATE_DIS | L3_CR2X_CLKGATE_DIS);
}
}
static void
tgl_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)

5
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1514,6 +1514,11 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define IS_ICL_REVID(p, since, until) \
(IS_ICELAKE(p) && IS_REVID(p, since, until))
#define EHL_REVID_A0 0x0
#define IS_EHL_REVID(p, since, until) \
(IS_ELKHARTLAKE(p) && IS_REVID(p, since, until))
#define TGL_REVID_A0 0x0
#define TGL_REVID_B0 0x1
#define TGL_REVID_C0 0x2