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 --- drivers/gpu/drm/msm/msm_gpu.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 46e6b82..3378a9d 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -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)