AnsweredAssumed Answered

issue about i.MX6 Thermal

Question asked by Zongbiao Liao on May 11, 2016
Latest reply on May 12, 2016 by igorpadykov

Hello,Community

 

I did some tests as bellow.

 

1)TEST1:

I startup i.MX6DLSabreauto with BSP3.14.52 and  use HDMI as display.

Then I set the passive point of thermal to 65 degree(default is 85),and then I startup /opt/viv_samples/vdk/tutorial3 to make SoC in heavy loading.

When temperature of SoC reached 65 degree, kernel output logs as bellow:

 

System is too hot. GPU3D will work at 1/64 clock.

imx-ipuv3 2400000.ipu: IPU Warning - IPU_INT_STAT_10 = 0x00100000

imx-ipuv3 2400000.ipu: IPU Warning - IPU_INT_STAT_5 = 0x00800000

 

and the HDMI became to display nothing.

 

2)TEST2

Use LVDS as display,the other steps are the same as TEST1.

When temperature of SoC reached 65 degree, kernel output logs as bellow:

 

System is too hot. GPU3D will work at 1/64 clock.

 

and the LVDS still works normally.

 

3)TEST3

Use BSP3.0.35_4.1.0, the other steps are the same as TEST1.

 

When temperature of SoC reached 65 degree, GPU3D will work at 1/64 clock.

And HDMI still works normally.

 

So please tell me the reason of the abnormal result in TEST1.

Outcomes