How to switch the mode of HDMI TX in i.MX8M

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How to switch the mode of HDMI TX in i.MX8M

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ko-hey
Senior Contributor II

Hi all

 

I have a question about HDMI TX in i.MX8M.

 

According to the chapter 13.4 of following document, the HD Display Transmitter Controller (HDMI TX) IP supports some protocols and it seems that it can switch by register or software configuration.

https://www.nxp.com/docs/en/reference-manual/IMX8MDQLQRM.pdf

 

How can use switch the protocols ?

 

If it can switch by a register, please specify it.

On the other hand, if it can switch the protocol by only software, please provide me a sample source.

 

 

Ko-hey

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1 Solution
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Yuri
NXP TechSupport
NXP TechSupport

Hello,

 

  For a HD Display TX controller supporting multi-protocols, switching

between the two modes (HDMI and DisplayPort) requires reloading the

appropriate FW.


Have a great day,
Yuri

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441 Views
Yuri
NXP TechSupport
NXP TechSupport

Hello,

 

  For a HD Display TX controller supporting multi-protocols, switching

between the two modes (HDMI and DisplayPort) requires reloading the

appropriate FW.


Have a great day,
Yuri

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

View solution in original post

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ko-hey
Senior Contributor II

Hi Yuri Muhin

Does it need reset after reloading the FW ?

Ko-hey

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Yuri
NXP TechSupport
NXP TechSupport

Hello,

  HDMI FW, required for HDMI controller should be loaded at i.MX8M boot

stage, without following system reset.

Regards,

Yuri.

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