TDA4VM: TDA4 supports maximum DSI and CSI

Hi Zi Wang,

The output DPHY is shared between DSI and CSITX, so we can have either CSITX or DSI. 

On the input side, there are two CSIRX supports, both can be supported simultaneously.

Regards,

Brijesh 

Hello Brijesh,

If I want to output two different pictures on two screens through two DSIs, is it ok?
Can CSI_TX be configured as DSI?

I see CSI_TX and DSI output on one DPHY_TX0

Hi Zi Wang,

No, DPHY_TX can either be used for CSITX or for DSI.. Both simultaneously cannot be enabled. 

Instead of two DSI, can you consider using two channels in CSITX, differentiated with different virtual channel id? CSI protocol supports it..

Regards,

Brijesh 

Hello Brijesh,

My client has this requirement:
On R5, the two cameras are input through CSI_RX, and after the image is processed, they are output through two DSIs respectively (not DSI and SCI are directly connected)

Does the way you said above apply here?

This virtual channel id method uses one DSI hardware to virtualize two DSI channels?

Hello Zi Wang,

There is only one DPHY, so two different DSI outputs are not available on TDA4VM. 

Zi Wang said:

This virtual channel id method uses one DSI hardware to virtualize two DSI channels?

Yes, each channel is identified using an id, but still uses same CSITX port.. 

Regards,

Brijesh

Hello Brijesh,

Thank you very much for your reply, this solved most of my problems!

Another question to ask
Are the two CSI_RXs on the TDA4 EVM board not used for the serializer and deserializer? I didn't see it in the SDK. I may use this later.