TPS65987D: Samsung S10e does not go into DP Alt Mode

One more thing that I want to mention; that our TPS65987D based device in Discover Identity message says that it is a Product type "Periferal".

But the cable is responding as Alternate Mode Adapter.

My question is, is this a source of the problem, and if it is, how we can change the Prodct Type.

Thanks

Aleksey

Hey Aleksey,

It would help more if I could see your GUI configurations for TPS65987D, could you please attach a project file so I can take a look at that as well as the PD analyzer files so I can get a more in depth look at the communications?

Thank you,

Hari 

Thanks Hari, for the answer.

Here is the project file;

4643.EvmBased_06_17_19_BaseForPS171IO4ctr.pjt

Thanks 

Aleksey

For some reason I have not able insert analyzer files here.
So here is the link to my Google drive with files;

Thanks

Aleksey

Hi Aleksey,

I am looking at your GUI configurations and see that you didn't check the "Supports DP v1.3 signalling" box, I would recommend checking that as the Samsung S10e might require it for proper DP functionality and testing it again.

As for the logs, what's your process for collecting them, do you first collect the log by connecting the cable to the monitor and then collect a separate log after you connect the S10e? You should be able to record and collect one full log together instead of two.

Thank you,

Hari

Hi Hari,

I did test that, if "Supports DP v1.3 signalling"  box was would it work; and it is behave exactly same. However, if you recommend, we will have it checked.
About logs; there is a log called "SamsungS10eLog", it is log when I did connect the phone to our TPS65987D based device.
Another log, which called SamsungDexCable" is the log from same phone connected to TV via off the shelf USB-C to HDMI cable.
I am bringing this as an example of how we need the phone to behave with our device.

Thank you.

Aleksey

Hi Aleksey,

What is the TPS65987D based device that you are using? Does the TV that you are connecting to via off the shelf USB-C to HDMI cable also use a TI PD controller?

Thank you,

Hari

Hello Hari.

TPS65987D based device is our own design device that we have issue with. 
Off the shelf USB-C to HDMI cable have some PD controller, but we have never investigate what brand is it.
Our main question is how to modify Product Type in Discover Identity message.

Thanks

Aleksey

Hi Aleksey,

To eliminate the cause being your device itself, could you please reproduce this issue using a TPS65987D EVM and collect the logs? The PD controller should determine the Product Type based on the PD communication and contract that happens.

Thank you,

Hari

Hi Hari,

Unfortunately, we have no TPS65987D EVM available in house.
As I remember, when advanced mode is used in TPS6598x configuration tool, there are one of the option box for Product Type.
However, as I see advanced mode is made for TPS65988 device, or may be I am not right, but I was not successful in implementing it for our design.

Thanks,

Aleksey

Hi Aleksey,

The advanced mode is also available for TPS65987 device. I was able to select that device and configure it as a DFP. Once that's loaded in the GUI, you can configure the "Product Tpe" in the "Transmit Identity Data Object register (0x47). Here is a screenshot of the option in the GUI where you can select it as a peripheral. 

Thank you,

Hari

Hi Hari.

That is great info that you have advanced mode for TPS65987D.
However, for some reason in the version that I have on my computer, like I said advanced mode is available only for TPS65988.
Thus, may I ask you a favor to provide us a copy of the project file for TPS65987D advanced mode.

Thank you.

Aleksey

Hi Hari,

Thanks for the link. I was able to load advanced mode project file for TPS65987D and made it work for CromeBook.
Now it responds as Alternate Mode Adapter in Discover Identity message to CromeBook.
However, with Samsung S10e nothing have change. In same massage it responds as Peripheral, also I have unchecked to boxed for USB Device and Host in GUI, but in the message it stays present.
Another interesting behavior that I have noised; with CromeBook it is doing DR_Swap before correct Discover Identity message.
But, with Samsung phone its doing Discover Identity immediately after getting a power.
Any idea how we can correct that?

I am adding CromeBook connection log to the GoogleDrive.

Thanks 

One more thing Hari,

A I see from the picture you provided, GUI version is 5.21, from the link that you gave I was able ti download GUI Version 5.13.
Your GUI have two select box for UFP and DFP. The one that I have access to has only one select box.

How can we get Ver 5.21?

Thanks

Aleksey

Hi Hari,

"Initiate Swap To UFP" check box made it to work.

Thanks

Aleksey