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0a60797a0e
The workaround for this is described as: "if RenderSurfaceState.Num_Multisamples > 1, disable RCC clock gating if RenderSurfaceState.Num_Multisamples == 1, set 0x7010[14] = 1" Further documentation in the internal bug referenced by the bspec suggest that any of the above suggestions should suffice to fix the issue. We are going with disabling RCC clock gating. Unfortunately, what we are doing doesn't match the name of the workaround, but at least it matches its description. This change improves CNL stability by avoiding some of the hangs seen in the platform. v2: Only disable RCC clock gating. Signed-off-by: Rafael Antognolli <rafael.antognolli@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171103183027.5051-1-rafael.antognolli@intel.com |
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