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MT9T001 on dm6446

Other Parts Discussed in Thread: TVP5146

Hello

we are developing an application for video sharing. We want to use the dm6446. We have the dm6446 eval board with the last psp 2.00 and the lsp 2.10. We build an adapter to use the sensor MT9T001 whit the board. The sensor have the same i2c address of the tvp5146 that is mounted on the board so that chip was set in reset whit a resistor. We linked the sensor in the video port and we verified that the sensor communicate with the arm using i2ctools. We also verified that the signals of the raw bayer of the images come out the sensor correctly. We use a level translate to set the max voltage level of the bits and the pixel clock to 1.8V. Now we can't use the sensor becouse there is not a driver that can use the sensor on linux. We want to know if there is anyone that have used sensor with the dm6446 board and if there is someone that have develop a driver that can use this sensor for acquire, interpole the bayer into ycbcr and use the image for the encode/decode demo. Thnks for the response

  • Hi,

    You can refer to below Arago branch. It has V4L2 capture driver which supports capture from sensor. Sadly, this supports only dm365/dm355. By referring to dm365/dm355 implementation, I believe you can extend support for dm6446 sensor capture. Even 'previewer' support is there for dm365 which does convert bayer frames to yuv frames.

    http://arago-project.org/git/projects/?p=linux-davinci.git;a=shortlog;h=refs/heads/r37

    Corresponding applications can be found at:

     http://arago-project.org/git/projects/?p=examples-davinci.git;a=shortlog;h=refs/heads/r38

  • Hi,

     

    If i remember correctly, earlier release based on Linux kernel 2.6.10 was supporting MT9T001 sensor driver on DM6446.

     

    Thanks,

    Brijesh Jadav

  • Hi,

                 I am using DM644x video processor with Omnivision's OV9712 CMOS capture sensor. The sensor captures image in raw bayer pattern. Then, I use the davinci previewer to convert raw data to YUV. But when I get image in YUV format, the colour information is lost. I only get the Y data. U and V data is nil. What could be the problem?

    Thanks,

    Krinali