IPIPE device node missing

Gennadiy Kiryukhin

Several example indicated that IPIPE driver can be accessed through /dev/dm350_ipipe.

For some reason the node does not get created on my board (based on DM355). However, I get the following messages during kernel boot:

...
DM355 IPIPE intialized in Single Shot mode
...
davinci_previewer initialized
davinci_resizer initialized
...

Based on my understanding, the only IPIPE-related devices under /proc/devices are:

253 DaVinciResizer
254 DaVinciPreviewer

What could be the problem?

over 14 years ago

0 Manjunath Hadli56783 over 14 years ago

TI__Prodigy 650 points

The example might be a little old. Now the ipipe is not accessible directly by the applications, but only through either the resizer or the previewer driver. Please use one of these to get to ipipe settings.

-Manju

0 Manjunath Hadli56783 over 14 years ago in reply to Manjunath Hadli56783

TI__Prodigy 650 points

The examples are MV kernel based, and a lot of dvelopments have taken place hence. Just FYI.

-Manju

0 Gennadiy Kiryukhin over 14 years ago in reply to Manjunath Hadli56783

Expert 2800 points

Is there documentation for that? All the documentation and examples I have seen referred to dm355_ipipe device.

0 Brijesh Singh over 14 years ago in reply to Gennadiy Kiryukhin

TI__Expert 5680 points

Hello,

Like Manju pointed, In latest kernel releases ( the one included in DVSDK 4.0) resize and previewer can be accessed via these device node.

"/dev/davinci_resizer"
"/dev/davinci_previewer"

In addition to this, you can find some sample examples here:

http://arago-project.org/git/projects/?p=examples-davinci.git;a=tree;f=imp-prev-rsz/dm365;h=1640353d52839453899488d647f06488598460dc;hb=ce0d60230430eb0caf278dafd5fb6db6bee72820

Thanks

Brijesh

0 Gennadiy Kiryukhin over 14 years ago in reply to Brijesh Singh

Expert 2800 points

DVSDK 4.0 does not have support for DM355 which is what I am using. At least DVSDK 4.0 it is not listed under DM355 processor, and the note in red said that DVSDK would be listed for supported platforms. Are those samples still relevant for DVSDK 3.01 on DM355?

Thank you

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IPIPE device node missing