diff mbox series

[3/3] drm/msm/gpu: Add default devfreq thresholds

Message ID 20230110182150.1911031-4-robdclark@gmail.com
State New
Headers show
Series drm/msm/gpu: Devfreq fixes+tuning | expand

Commit Message

Rob Clark Jan. 10, 2023, 6:21 p.m. UTC 
From: Rob Clark <robdclark@chromium.org>

Signed-off-by: Rob Clark <robdclark@chromium.org>
---
 drivers/gpu/drm/msm/msm_gpu_devfreq.c | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
index e578d74d402f..1f31e72ca0cf 100644
--- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c
+++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
@@ -145,6 +145,15 @@  void msm_devfreq_init(struct msm_gpu *gpu)
 	if (!gpu->funcs->gpu_busy)
 		return;
 
+	/*
+	 * Setup default values for simple_ondemand governor tuning.  We
+	 * want to throttle up at 50% load for the double-buffer case,
+	 * where due to stalling waiting for vblank we could get stuck
+	 * at (for ex) 30fps at 50% utilization.
+	 */
+	priv->gpu_devfreq_config.upthreshold = 50;
+	priv->gpu_devfreq_config.downdifferential = 10;
+
 	mutex_init(&df->lock);
 
 	dev_pm_qos_add_request(&gpu->pdev->dev, &df->boost_freq,