TDA4AL-Q1: Ethernet control

Makoto Oka

Part Number: TDA4AL-Q1
Other Parts Discussed in Thread: DRA821, TDA4VL

Let me know about the specific use of Ethernet. In the datasheet, it looks like a block of real-time core-side regions.

From the application core (Cortex-A72) side, is it possible to directly recognize all Ethernet ports as physical network devices and use standard drivers for direct control communication (as a network interface in Linux, etc.)?

Or will the control of the Ethernet port on the real-time core itself be carried out on the real-time core side, and the application core side will communicate via the real-time core after linking data using "inter-core communication (IPC)" etc.?

I want to operate in the former (a form that recognizes and uses directly from the application core side).

3 months ago

0 Tanmay Patil 3 months ago

TI__Mastermind 43700 points

Hi,

With TDA4AL, we support native ethernet support from both A72 and R5 cores. So you can have ethernet controller on A72 core. We call this native linux drivers and this is a part of our SDKs.

Please see the following documentation for more details : https://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-j721s2/11_02_00_04/exports//docs/linux/Foundational_Components/Kernel/Kernel_Drivers/Network/CPSW-Ethernet.html

Regards,
Tanmay

0 Makoto Oka 3 months ago in reply to Tanmay Patil

TI__Intellectual 790 points

Thank you.

In the datasheet Functional Block Diagram, there is note about 'SGMII, USB3.0, and PCIE share total of four SerDes lanes. A maximum of two of the three IP (for example, SGMII and USB) can be used concurrently'.

How can I use 2 of Ethernet and USB3.0 and PCIe? May I know for TDA4AL and DRA821?

0 Makoto Oka 3 months ago in reply to Makoto Oka

TI__Intellectual 790 points

Hi,

Could you please answer to this sooner?

0 Tanmay Patil 3 months ago in reply to Makoto Oka

TI__Mastermind 43700 points

Hi,

Apologies for the delay.

Can you confirm if you are using TDA4VL or DRA821. Bot are different devices. TDA4VL does not have SGMII.

Makoto Oka said:
'SGMII, USB3.0, and PCIE share total of four SerDes lanes. A maximum of two of the three IP (for example, SGMII and USB) can be used concurrently'.

This is true for DAR821

For TDA4VL, you get only PCIe and USB 3.0 capabilities on serdes.

Makoto Oka said:
How can I use 2 of Ethernet and USB3.0 and PCIe? May I know for TDA4AL and DRA821?

You will have to use RGMII in that case for ethernet. On DRA821, any serial interface would not be possible with PCIe and USB 3.0. Or use USB 2.0 and use serial interfaces.

Regards,
Tanmay

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TDA4AL-Q1: Ethernet control