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drm/i915/dg2: Don't read DRAM info

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DG2 does not use system DRAM information for BW_BUDDY programming or
watermark workarounds, so there's no need to read this out at startup.

Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210721223043.834562-18-matthew.d.roper@intel.com
This commit is contained in:
Matt Roper 2021-07-21 15:30:42 -07:00
parent 47753748ad
commit 5eb6bf0b44
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/i915/intel_dram.c
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@ -494,15 +494,15 @@ void intel_dram_detect(struct drm_i915_private *i915)
struct dram_info *dram_info = &i915->dram_info;
int ret;
if (GRAPHICS_VER(i915) < 9 || IS_DG2(i915) || !HAS_DISPLAY(i915))
return;
/*
* Assume level 0 watermark latency adjustment is needed until proven
* otherwise, this w/a is not needed by bxt/glk.
*/
dram_info->wm_lv_0_adjust_needed = !IS_GEN9_LP(i915);
if (GRAPHICS_VER(i915) < 9 || !HAS_DISPLAY(i915))
return;
if (GRAPHICS_VER(i915) >= 12)
ret = gen12_get_dram_info(i915);
else if (GRAPHICS_VER(i915) >= 11)