Re: [PATCH v6 1/5] drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table during probe

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