AM335x CPSW switch function

Jaikey

Prodigy 230 points

Other Parts Discussed in Thread: TLK105, SYSBIOS, PROCESSOR-SDK-AM335X

At first what I use:

Communication to two different Phy devices (LAN8710 and TLK105).

LAN8710 is connected to RMII1 Pins

TLK105 is connected to RGMII2 Pins

For Communication we use the sdk drivers V 1.1.0.6

Actual state:

# Ethernet communication through the LAN8710 Phy is working

# Ethernet communication through the TLK105 will be configuered and tested but actual it will not work.

=>So I have looked in the code but it think I haven't get a good knowledge how it works and what i have to configure that it works.

Here some Questions:

+ Which functions of the driver I have to use to configure the switch function (overview what is to do)

+ How I have to give the MDIO interface the information of the Phy addresses?

+ How can I proof that the connection to thy phy which is aktual not working is ok (I can see the clk and signals on the MDIO)?

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

What SDK is this? Where did you take it from?

0 Jaikey over 9 years ago in reply to Biser Gatchev-XID

Prodigy 230 points

I think it is a download of the TI homepage or from a starterkit we had used before, but I can't say it exactly because my colleague used it in this project. The Version is V 1.1.0.6.

0 Biser Gatchev-XID over 9 years ago in reply to Jaikey

TI__Guru**** 393215 points

Is this Linux, SYS/BIOS, or Starterware?

0 Jaikey over 9 years ago in reply to Biser Gatchev-XID

Prodigy 230 points

We use SYS/BIOS
I do ot know how a can find out if it is "starterware" The structure look like this:
sdk_drivers
- V_1.1.0.6
-include
-CPSW
- ICSS
- starterware
- src
- CPSW
- ICSS

0 Biser Gatchev-XID over 9 years ago in reply to Jaikey

TI__Guru**** 393215 points

This seems to be the Industrial SDK, and v1.1.0.6 is obsolete and no longer supported. I suggest that you download either the latest ISDK: downloads.ti.com/.../index_FDS.html or the RTOS SDK: software-dl.ti.com/.../index_FDS.html

0 Jaikey over 9 years ago in reply to Biser Gatchev-XID

Prodigy 230 points

What is the difference between ISDK and RTOS SDK?
If we used like you mentioned the ISDK would the code for ISDK closer to our actual V 1.1.0.6 than to the RTOS SDK?

0 Biser Gatchev-XID over 9 years ago in reply to Jaikey

TI__Guru**** 393215 points

My guess is that the latest ISDK will be closer to the version you have. You can read more about the two SDKs here:
www.ti.com/.../sysbiossdk-ind-sitara
www.ti.com/.../PROCESSOR-SDK-AM335X

0 Jaikey over 9 years ago in reply to Biser Gatchev-XID

Prodigy 230 points

I had download the SYSBIOSSDK-IND-SITARA, but there is no extension. So it's a *.zip file or a *.exe or anything else?
And do you know which functions I have to use for configuration of the MDIO interface for access of the phy's?

0 Biser Gatchev-XID over 9 years ago in reply to Jaikey

TI__Guru**** 393215 points

I have notified the ISDK team. They will take this from here.

0 Biser Gatchev-XID over 9 years ago in reply to Biser Gatchev-XID

TI__Guru**** 393215 points

By the way, read the guides on the download page.

0 Jaikey over 9 years ago in reply to Biser Gatchev-XID

Prodigy 230 points

Do I have something to do, to get in contact with the ISDK team?

0 Biser Gatchev-XID over 9 years ago in reply to Jaikey

TI__Guru**** 393215 points

No, I have notified them and they will respond here.

0 Jaikey over 9 years ago in reply to Biser Gatchev-XID

Prodigy 230 points

unfortunately I takes much more time for a answer and I can't make good progress in this switch function :-(

0 David Zaucha over 9 years ago in reply to Jaikey

TI__Expert 7570 points

Hi,
It sounds like you would like to develop a CPSW based switch using the AM335x.

Unfortunately there is not a generic switch example in ether of the Industrial SDK or the Processor SDK.

SYSBIOSSDK-IND-AM335X: SYSBIOS Industrial SDK for AM335x Processors v1.1.0.6 is an older version of the SYSBIOSSDK-IND-AM335x v1.x.x.x which is a maintenance release that is being supported for existing legacy industrial ethernet customers.

New industrial ethernet designs on AM335x and AM437x should use SYSBIOSSDK-IND-SITARA v02.x at downloads.ti.com/.../index_FDS.html. This SDK has dropped CPSW support and has only PRU-ICCS Ethernet support to meet the real time performance requirements of the industrial Ethernet protocols.

The SYSBIOS-IND-SDK has a Ethernet/IP example which uses the PRU-ICSS. This protocols uses the Network Development Kit (NDK) and a (3rd party) Molex stack . The Ethernet/IP application can be modified to work as a Switch application by removing the Ethernet/IP dependencies. However this would require licensing of the stack from Molex or replacing it with your own stack.

New non-industrial communications designs should use the Processor SDK v03.x. at www.ti.com/.../PROCESSOR-SDK-AM335X .
In the Processor SDK, the NDK interfaces through a well-defined transport interface, Network Interface Management Unit(NIMU) to the PDK and platform software elements needed for operation. The NIMU provides an interface between the stack and the device drivers through which the stack can talk to multiple instances of a single or various device drivers concurrently. The Processor SDK contains both basic NIMU examples illustrating the PRU-ICSS and CPSW operation.
However as mentioned before, there is not a generic switch example.
David

0 Jaikey over 9 years ago in reply to David Zaucha

Prodigy 230 points

Are there any descritions für DSP/Bios like http://processors.wiki.ti.com/index.php/AM335x_CPSW_(Ethernet)_Driver%27s_Guide ?

0 David Zaucha over 9 years ago in reply to Jaikey

TI__Expert 7570 points

Hi,

There is similar documentation.
The NDK documentation is somewhat version specific and included in NDK version that is being used, in C:\ti\{NDK_ver_number}\docs.

The Processor SDK RTOS Software Developer Guide at processors.wiki.ti.com/.../Processor_SDK_RTOS_Software_Developer_Guide also several links for the NDK.
NDK Programmer's Reference Guide at www-s.ti.com/.../spru524.pdf
NDK User's Guide at www-s.ti.com/.../spru523.pdf
Network Developers Kit FAQ at processors.wiki.ti.com/.../Network_Developers_Kit_FAQ
NDK Support Package Ethernet Driver Design Guide at www-s.ti.com/.../sprufp2.pdf
Rebuilding_the_NDK_Core Rebuilding NDK Core at processors.wiki.ti.com/.../Rebuilding_the_NDK_Core

David

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AM335x CPSW switch function