• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 98 subscribers
  • Views 642 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Linux/AM5726: Migration from AM5728

Shreek
Intellectual 990 points

Part Number: AM5726
Other Parts Discussed in Thread: AM5728,

Tool/software: Linux

Hello every experts

I have tested My Beagle Board X15 with pre-built Images in SD card. Is there any modification should be done if I replace AM5728BABCXEA with AM5726BABCXA on X15, by the way all the display peripherals (such as hdmi) is not required in my project.

I know the the main difference between AM5728 and AM5726 is that graphics, video acceleration, and DSS is not supported on AM5726, But these features is not needed in my project. So, my destation is to boot X15 (with am5728 is replaced by am5726) using pre-built-image of GPEVM AM572X.

So, here is the questions:

1.Should I do some modifications to boot X15 (with am5728 is replaced by am5726) using pre-built-image of GPEVM AM572X.

2.Should I remove dss in linux menuconfig?

  • 0
    TI__Guru 55345 points

    Hello Shreek,

    Shreek said:
    1.Should I do some modifications to boot X15 (with am5728 is replaced by am5726) using pre-built-image of GPEVM AM572X.

    If you run the prebuilt images on AM5726 device, first the booting will hang on "Starting kernel ..." message while trying to initialize the GPU and DSS. To fix this you will need to change the gpu and dss status to disabled in the kernel's device tree. Later while the kernel graphics modules are loading again some errors are expected to be seen. To fix this you will need to blacklist the pvrsrvkm and disable the matrix, weston, pvr services.

    root@am57xx-evm:~# echo blacklist pvrsrvkm > /etc/modprobe.d/blacklist.conf
    root@am57xx-evm:~# systemctl disable matrix-gui-2.0.service weston.service rc.pvr.service

    Shreek said:
    2.Should I remove dss in linux menuconfig?

    If you want to reduce kernel size and save some space in rootfs you can disable the DSS options and remove the pvrsrv kernel modules from the rootfs.

    Note: To build a complete rootfs for AM5726 with working non-SGX graphics you can refer to this page.

    Best regards,
    Kemal

  • 0 in reply to Kemal R. Shakir
    Intellectual 990 points

    Thank you so much. I'll check this when my new board comes. And I have another question about this thred:  Is the MLO in am57xx pre-built image also compatible to AM5726 in the case that graphics features are not used in my board?

  • 0 in reply to Shreek
    TI__Guru 55345 points

    Yes, the MLO should be fully compatible.

  • 0 in reply to Kemal R. Shakir
    Intellectual 990 points

    Testing succefully. Thank you.