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DRA821U: A72 detail on DRA821

Junpei Kishi

Intellectual 865 points

Part Number: DRA821U
Other Parts Discussed in Thread: DRA821

Hi team,

I wonder whichever the A72 cores in DRA821U are original designed by ARM or customized design by TI.

If these were original, please let me ask some questions listed below.

Which revision is used? The latest one is r0p3, but does DRA821U use latest one?
The original ARM A72 core has generic timers. Are these available on DRA821U?
I understood some implementation options are available for Cortex-A72 cores. Could you show me the parameters for DRA821U?

Thank you and best regards,
Junpei Kishi

over 4 years ago

0 Junpei Kishi over 4 years ago

TI__Intellectual 865 points

Hi,

Do you have any update for this?

Thank you for all your working,
Junpei Kishi

0 Junpei Kishi over 4 years ago in reply to Junpei Kishi

TI__Intellectual 865 points

Hi,

Could you share any progress?

Thanks,
Junpei

0 Tsurumoto over 4 years ago in reply to Junpei Kishi

TI__Genius 15234 points

Hi

Do you have any update?

+1 kcastille over 4 years ago in reply to Tsurumoto

TI__Guru 54292 points

Hello,

The A72 is r1p0.

TI does set configuration options for the A72 such as the L2 cache size. These are described in the TRM.

Regards,

Kyle

0 Junpei Kishi over 4 years ago in reply to kcastille

TI__Intellectual 865 points

Hi Kyle,

I understood A72 is r1p0... ,but on developers.arm.com, no information are found about r1p0.
Could you share some documents such as TRM for r1p0?

Best Regards,
Junpei

+1 kcastille over 4 years ago in reply to Junpei Kishi

TI__Guru 54292 points

Junpei,

This document highlights the deltas between r0p3 and r1p0:

Cortex-A72 MPCore - Armhttps://documentation-service.arm.com › static

Regards,

Kyle

0 Junpei Kishi over 4 years ago in reply to kcastille

TI__Intellectual 865 points

Hi Kyle,

Don't you have any update note for r1p0?
I believe you have it to design DRA821U.

If it is under the NDA between TI and arm, please let me know.

Best Regards,
Junpei

0 kcastille over 4 years ago in reply to Junpei Kishi

TI__Guru 54292 points

Junpei,

The only documentation that is available is the DRA821 TRM and the ARM documents.

Regards,

Kyle