TDA4VM: UDMA

fir shaw

Prodigy 10 points

Part Number: TDA4VM

hi, these udma apis could be used in the linux sdk (A72) ?

over 2 years ago

0 Suman Anna over 2 years ago

TI__Guru** 111215 points

Hi Fir Shaw,

No, these are RTOS-only related API. The Linux support for UDMA is provided through the Linux specific DMA Engine framework.

regards

Suman

0 fir shaw over 2 years ago in reply to Suman Anna

Prodigy 10 points

thanks suman，and how can I get this framework or implement UDMA on the A72?

0 Suman Anna over 2 years ago in reply to fir shaw

TI__Guru** 111215 points

Hi Fir Shaw,

What Linux drivers are you interested in? Most of the drivers should already be supporting this, if using DMA.

regards

Suman

0 fir shaw over 2 years ago in reply to Suman Anna

Prodigy 10 points

Hi Suman,

something like this

, eg. udma.aa72fg

0 Suman Anna over 2 years ago in reply to fir shaw

TI__Guru** 111215 points

Hi Fir Shaw,

The usage between Linux and RTOS are not equivalent. Linux has a userspace and kernel separation with the drivers residing in the kernel. There is no such separation on RTOS-side, and the UDMA and related utility libraries provide the API directly.

regards

Suman

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TDA4VM: UDMA