[PATCH v5 5/5] drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table during probe

From: Vinod Polimera
Date: Tue Mar 08 2022 - 11:55:33 EST


use max clock during probe/bind sequence from the opp table.
The clock will be scaled down when framework sends an update.

Signed-off-by: Vinod Polimera <quic_vpolimer@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index d550f90..d9922b9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1221,6 +1221,7 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
struct dpu_kms *dpu_kms;
struct dss_module_power *mp;
int ret = 0;
+ unsigned long max_freq = ULONG_MAX;

dpu_kms = devm_kzalloc(&pdev->dev, sizeof(*dpu_kms), GFP_KERNEL);
if (!dpu_kms)
@@ -1243,6 +1244,8 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
return ret;
}

+ dev_pm_opp_find_freq_floor(dev, &max_freq);
+ 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