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Message-ID: <20231201004527.GA1766637@hu-bjorande-lv.qualcomm.com> Date: Thu, 30 Nov 2023 16:45:27 -0800 From: Bjorn Andersson <quic_bjorande@...cinc.com> To: Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>, Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>, David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, "Bjorn Andersson" <andersson@...nel.org>, Anton Bambura <jenneron@...tmarketos.org> CC: <linux-arm-msm@...r.kernel.org>, Rob Clark <robdclark@...omium.org>, <dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] drm/msm/dpu: Add missing safe_lut_tbl in sc8180x catalog On Thu, Nov 30, 2023 at 04:35:01PM -0800, Bjorn Andersson wrote: > Similar to SC8280XP, the misconfigured SAFE logic causes rather > significant delays in __arm_smmu_tlb_sync(), resulting in poor > performance for things such as USB. > > Introduce appropriate SAFE values for SC8180X to correct this. > > Fixes: f3af2d6ee9ab ("drm/msm/dpu: Add SC8180x to hw catalog") Reported-by: Anton Bambura <jenneron@...tmarketos.org> > Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com> > --- > drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h > index e07f4c8c25b9..9ffc8804a6fc 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h > +++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_5_1_sc8180x.h > @@ -367,6 +367,7 @@ static const struct dpu_perf_cfg sc8180x_perf_data = { > .min_llcc_ib = 800000, > .min_dram_ib = 800000, > .danger_lut_tbl = {0xf, 0xffff, 0x0}, > + .safe_lut_tbl = {0xfff0, 0xf000, 0xffff}, > .qos_lut_tbl = { > {.nentry = ARRAY_SIZE(sc7180_qos_linear), > .entries = sc7180_qos_linear > > --- > base-commit: 3cd3fe06ff81cfb3a969acb12a56796cff5af23d > change-id: 20231130-sc8180x-dpu-safe-lut-ffd0df221d67 > > Best regards, > -- > Bjorn Andersson <quic_bjorande@...cinc.com> >
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