linux-kernel - [PATCH 2/2] drm/msm/dpu: use max_freq replace max_core_clk

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Message-Id: <20260109083808.1047-3-yuanjie.yang@oss.qualcomm.com>
Date: Fri,  9 Jan 2026 16:38:08 +0800
From: yuanjie yang <yuanjie.yang@....qualcomm.com>
To: robin.clark@....qualcomm.com, lumag@...nel.org, abhinav.kumar@...ux.dev,
        jesszhan0024@...il.com, sean@...rly.run, marijn.suijten@...ainline.org,
        airlied@...il.com, simona@...ll.ch, krzysztof.kozlowski@...aro.org,
        konrad.dybcio@....qualcomm.com
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        tingwei.zhang@....qualcomm.com, aiqun.yu@....qualcomm.com,
        yongxing.mou@....qualcomm.com
Subject: [PATCH 2/2] drm/msm/dpu: use max_freq replace max_core_clk_rate

From: Yuanjie Yang <yuanjie.yang@....qualcomm.com>

Enable power will use max_freq to set opp, so remove redundant
opp setting, and use max_freq to replace max_core_clk_rate.

Signed-off-by: Yuanjie Yang <yuanjie.yang@....qualcomm.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index c31488335f2b..973fec1c328c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1233,9 +1233,9 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
 		dpu_kms->hw_vbif[vbif->id] = hw;
 	}
 
-	/* TODO: use the same max_freq as in dpu_kms_hw_init */
-	max_core_clk_rate = dpu_kms_get_clk_rate(dpu_kms, "core");
-	if (!max_core_clk_rate) {
+	if (dpu_kms->max_freq != ULONG_MAX) {
+		max_core_clk_rate = dpu_kms->max_freq;
+	} else {
 		DPU_DEBUG("max core clk rate not determined, using default\n");
 		max_core_clk_rate = DPU_PERF_DEFAULT_MAX_CORE_CLK_RATE;
 	}
@@ -1317,8 +1317,6 @@ static int dpu_kms_init(struct drm_device *ddev)
 	if (!IS_ERR(opp))
 		dev_pm_opp_put(opp);
 
-	dev_pm_opp_set_rate(dev, max_freq);
-
 	ret = msm_kms_init(&dpu_kms->base, &kms_funcs);
 	if (ret) {
 		DPU_ERROR("failed to init kms, ret=%d\n", ret);
-- 
2.34.1