Messages in this thread | | | From | Dmitry Baryshkov <> | Date | Mon, 14 Mar 2022 22:25:44 +0300 | Subject | Re: [PATCH v6 1/5] drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table during probe |
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On Mon, 14 Mar 2022 at 17:47, Vinod Polimera <quic_vpolimer@quicinc.com> wrote: > > use max clock during probe/bind sequence from the opp table. > The clock will be scaled down when framework sends an update. > > Fixes: 25fdd5933("drm/msm: Add SDM845 DPU support") > Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> --- > drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > index e29796c..9c346ce 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c > @@ -1202,7 +1202,9 @@ static int dpu_bind(struct device *dev, struct device *master, void *data) > struct platform_device *pdev = to_platform_device(dev); > struct drm_device *ddev = priv->dev; > struct dpu_kms *dpu_kms; > + struct dev_pm_opp *opp; > int ret = 0; > + unsigned long max_freq = ULONG_MAX; > > dpu_kms = devm_kzalloc(&pdev->dev, sizeof(*dpu_kms), GFP_KERNEL); > if (!dpu_kms) > @@ -1225,6 +1227,12 @@ static int dpu_bind(struct device *dev, struct device *master, void *data) > } > dpu_kms->num_clocks = ret; > > + opp = dev_pm_opp_find_freq_floor(dev, &max_freq); > + if (!IS_ERR(opp)) > + dev_pm_opp_put(opp); > + > + dev_pm_opp_set_rate(dev, max_freq); > + > platform_set_drvdata(pdev, dpu_kms); > > ret = msm_kms_init(&dpu_kms->base, &kms_funcs); > -- > 2.7.4 >
-- With best wishes Dmitry
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