How to disable SGX and HDMI clock when I load M3 to memory?

Chuan-Hsiu Lee

Intellectual 590 points

Hi,

As title, I want to disable SGX and HDMI clock when I load M3 to memory.

Our platform does not need any video output function, how can I disable these modules for reducing power consumption?

Thanks

over 12 years ago

0 Brijesh Jadav over 12 years ago

TI__Guru**** 476905 points

You will have to disable hdmi clock in video pll. Are you loading any firmware on VPSSM3? if you are loading, there is no way, other than directly modifying video pll register, to disable pll..

Regards,

Brijesh Jadav

0 Chuan-Hsiu Lee over 12 years ago in reply to Brijesh Jadav

Intellectual 590 points

Hi,

After loading firmware on VPSSM3, is there any way to disalbe HDMI pll?

On the other hand, If I want to use DVR RDK, I cannot disable HDMI pll? Is it right?

Thanks

0 Badri Narayanan over 12 years ago in reply to Chuan-Hsiu Lee

TI__Guru 59700 points

For disabling SGX there is a similar discussion on 816x forum in this thread:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/249049/874813.aspx#874813

Although the discussion is on 816x the pvr script should be applicable for 814x as well.

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How to disable SGX and HDMI clock when I load M3 to memory?