diff mbox series

[v4,1/4] drm/msm: suspend devfreq on init

Message ID 1538646103-27445-2-git-send-email-smasetty@codeaurora.org (mailing list archive)
State Not Applicable, archived
Delegated to: Andy Gross
Headers show
Series msm/drm: a6xx DCVS series | expand

Commit Message

Sharat Masetty Oct. 4, 2018, 9:41 a.m. UTC
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 mbox series

Patch

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)