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DS90UB954-Q1EVM: CSI-2 compatibility with Raspberry PI CSI input?

Emilio Cuesta
Prodigy 220 points
Part Number: DS90UB954-Q1EVM
Other Parts Discussed in Thread: DS90UB953-Q1EVM, , ALP

Hello TI,

I am working on a demonstration using your DS90UB954-Q1EVM and DS90UB953-Q1EVM kits. The 953 also comes with a CSI-2 imaging sensor which uses 4 CSI-2 data channels. Both kits use all 4 data channels (D0, D1, D2, and D3) per the schematics. Is it possible to display an image through a basic Raspberry PI. A Raspberry PI has a CSI-2 input connector, but only uses 2 data channels rather than 4. I want to use a Raspberry PI since I have a Raspberry PI DSI display setup already. Would this work? If not, how can I easily access and use the CSI-2 data from J24 connector on the 954 demo board to display the image from the 953 eval kit? Thank you!

Emilio    

  • 0
    TI__Mastermind 21685 points
    >>>If not, how can I easily access and use the CSI-2 data from J24 connector on the 954 demo board to display the image from the 953 eval kit?

    UB954EVM to Raspberry PI CSI is something that has to be explored. As you point out the number of channels supported is different. Also,
    a) you may need an adapter to match the signals on UB954 J24 connector to RPI CSI connector.
    b) you also would need i2c connection to initialize 954. With 954 i2c connection, you can then initialize 953, and imager over the back channel of fpd link.
    c) It is possible to program UB954 to use only 2 channels
    d) UB954/UB953 have built in pattern generator module. Initially that can be used to send out test patterns and check if you are able to receive

    Another option to explore :
    Cypress CX3 is an example that provides CSI to USB3 bridging capability (using PC to display)

    www.cypress.com/.../ez-usb-cx3-programmable-mipi-csi-2-usb-30-camera-controller

    Thanks,
    Vishy
  • 0 in reply to Vishy Viswanathan
    Prodigy 220 points

    Hello Vishay,

    Thank you for comments.... What is the standard method (TI's recommended method) to display the image from the image sensor using the 953 and 954 eval kits? Thank you!

    Emilio

  • 0 in reply to Vishy Viswanathan
    Prodigy 220 points
    Thank you for comments.... What is the standard method (TI's recommended method) to display the image from the image sensor using the 953 and 954 eval kits? Thank you!
  • 0 in reply to Emilio Cuesta
    TI__Mastermind 21685 points
    Hello,

    a) We don't recommend a method. It depends on customer's system to decide which SOC to use.
    b) We provide a basic script for the OVT10640 sample sensor enclosed with UB 953EVM that can be run from ALP's scripting window. Then you see in the ALP info tab correct horizontal and vertical information of the sensor.
    FYI, You can install ALP from the following link
    http://www.ti.com/tool/ALP

    Please install the framework and also the latest ALP-PROFILE-UPDATE as explained in ALP page.
    You can find the UB954 predefined scripts in the following folder
    C:\Program Files (x86)\Texas Instruments\Analog LaunchPAD v1.57.0010\PreDefScripts\DS90UB954

    Please run ovt_1280_1080_30fps_REMOTE_RevE2_ID7a.py and you should see in info tab horizontal/vertical info updated
    You can refer the following post also for more info on this

    e2e.ti.com/.../2596379

    Thanks,
    Vishy