Messages in this thread | | | From | Abhinav Kumar <> | Subject | Re: [PATCH] drm/msm/dpu: Add missing safe_lut_tbl in sc8280xp catalog | Date | Tue, 21 Nov 2023 10:40:23 -0800 |
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On Mon, 30 Oct 2023 16:23:20 -0700, Bjorn Andersson wrote: > During USB transfers on the SC8280XP __arm_smmu_tlb_sync() is seen to > typically take 1-2ms to complete. As expected this results in poor > performance, something that has been mitigated by proposing running the > iommu in non-strict mode (boot with iommu.strict=0). > > This turns out to be related to the SAFE logic, and programming the QOS > SAFE values in the DPU (per suggestion from Rob and Doug) reduces the > TLB sync time to below 10us, which means significant less time spent > with interrupts disabled and a significant boost in throughput. > > [...]
Applied, thanks!
[1/1] drm/msm/dpu: Add missing safe_lut_tbl in sc8280xp catalog https://gitlab.freedesktop.org/drm/msm/-/commit/a33b2431d11b
Best regards, -- Abhinav Kumar <quic_abhinavk@quicinc.com>
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