From: Rob Clark Date: Tue, 10 Jan 2023 23:14:44 +0000 (-0800) Subject: drm/msm/gpu: Add default devfreq thresholds X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=33f868db99f16af4ed3aa67f79cb8ede630b8574;p=linux.git drm/msm/gpu: Add default devfreq thresholds Setup more appropriate devfreq tuning thresholds. Signed-off-by: Rob Clark Patchwork: https://patchwork.freedesktop.org/patch/517788/ Link: https://lore.kernel.org/r/20230110231447.1939101-4-robdclark@gmail.com Reviewed-by: Chia-I Wu --- diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c index ae5380e2abf76..e27dbf12b5e8c 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,