linux-kernel - [PATCH v2 2/2] drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table

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Date:   Fri, 25 Feb 2022 21:27:50 +0530
From:   Vinod Polimera <quic_vpolimer@...cinc.com>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     Vinod Polimera <quic_vpolimer@...cinc.com>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        dianders@...omium.org, swboyd@...omium.org,
        quic_kalyant@...cinc.com
Subject: [PATCH v2 2/2] drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table

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

Fixes: 62fbdce91("arm64: dts: qcom: sc7280: add display dt nodes")

Signed-off-by: Vinod Polimera <quic_vpolimer@...cinc.com>
---
 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..3288f52 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1319,6 +1319,7 @@ static int __maybe_unused dpu_runtime_resume(struct device *dev)
 	struct drm_device *ddev;
 	struct dss_module_power *mp = &dpu_kms->mp;
 	int i;
+	unsigned long max_freq = ULONG_MAX;
 
 	ddev = dpu_kms->dev;
 
@@ -1333,6 +1334,8 @@ static int __maybe_unused dpu_runtime_resume(struct device *dev)
 		return rc;
 	}
 
+	dev_pm_opp_find_freq_floor(dev, &max_freq);
+	dev_pm_opp_set_rate(dev, max_freq);
 	dpu_vbif_init_memtypes(dpu_kms);
 
 	drm_for_each_encoder(encoder, ddev)
-- 
2.7.4