About the HDMI output between the reboot by the thermal driver for Android4.4.3

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About the HDMI output between the reboot by the thermal driver for Android4.4.3

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yuuki
Contributor V

Dear all,

We run Android4.4.3 BSP on SABRE-SDB.
And we run H.264 Video Playback, 1080p on HDMI

The thermal driver is set as follows.

==================================================
root@sabresd_6dq:/sys/class/thermal/thermal_zone0

temp   ===> 34918
trip_point_0_temp ===> 85000
trip_point_0_type ===> passive
trip_point_1_temp ===> 100000
trip_point_1_type ===> critical
==================================================

If temperature of i.MX6 exceeds 100 degrees Celsius, i.MX6 is rebooted.
The image which stopped continues being output by HDMI.

Is there the method avoiding this?
While i.MX6 reboots, would you tell me the method to turn off the HDMI output?

Best Regards,
Yuuki

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2 Replies

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SergioSolis
NXP Employee
NXP Employee

Hello Yuuki,

Does the image dissapear when the kernel is loading after reboot or when does it change?

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yuuki
Contributor V

Dear Sergio Solis-san,

Thank you for your reply.

It seems that an image continues being output by HDMI during from "system shut down(by thermal driver)" to a "kernel start".
When the kernel is loading after reboot, the image disappears.

Is there the method to turn off the HDMI output, when a system is shut down by thermal driver?

Best Regards,
Yuuki

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