Commit d3fa91c9 authored Oct 04, 2018 by Sharat Masetty Committed by Rob Clark Oct 04, 2018

drm/msm: suspend devfreq on init



Devfreq turns on and starts recommending power level as soon as it is
initialized. The GPU is still not powered on by the time the devfreq
init happens and this leads to problems on GPU's where register access
is needed to get/set power levels. So we start suspended and only restart
devfreq when GPU is powered on.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>

parent bdacdcf2

drivers/gpu/drm/msm/msm_gpu.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -105,6 +105,8 @@ static void msm_devfreq_init(struct msm_gpu *gpu)
		dev_err(&gpu->pdev->dev, "Couldn't initialize GPU devfreq\n");
		gpu->devfreq.devfreq = NULL;
		}

		devfreq_suspend_device(gpu->devfreq.devfreq);
		}

		static int enable_pwrrail(struct msm_gpu *gpu)