TMS320DM8148: NV12 output to display /dev/video1 or /dev/video2?

HI,

In "DM814X AM387X VPSS Video Driver User Guide", there is a table "Video Deviceo Buffer Format", saying NV12 is not supported for /dev/video1 or /dev/video2.

We assume this just means that the current driver doesn't support it.

We have a product based on DM8148 which uses NV12.  Currently, we convert NV12 to YUYV for display, but we would like to speed it up by directly feeding NV12.

Can you please tell us which driver and where to look at?

We use EZSDK 5.5.2 + linux-04.04.00.02 PSP, and have TI Overlay code.  We have experiences in developing Linux drivers and patching M3 firmware.

Thanks,
tamo2

Hello,

tamo2 said:

In "DM814X AM387X VPSS Video Driver User Guide", there is a table "Video Deviceo Buffer Format", saying NV12 is not supported for /dev/video1 or /dev/video2.

This is correct. /dev/video3 support NV12.

tamo2 said:

Can you please tell us which driver and where to look at?

Let me check with someone more aware with this.

BR
Margarita

Hi, any update on this?
Thanks!

Hi Margarita,

Did you find anything out about how to add NV12 support to /dev/ideo1 and /dev/video2? Or where to at least which driver would need to change?

Thanks,
Kim