AM243x/CPSW/10Mbps packet transmission error

mshino

Hi,

UDP packets is not sent in SDK sample.

SDK : mcu_plus_sdk_am243x_08_06_00_45
Sampe : enet_cpsw_udpclient_am243x-evm_r5fss0-0_freertos_ti-arm-clang
PORT : CPSW PORT1
BOARD : am243x-evm (HS-FS)
PHY : DP83867

The only code modified is EnetApp_initLinkArgs() in app_cpswconfighandler.c

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linkCfg->speed     = ENET_SPEED_10MBIT;
linkCfg->duplexity = ENET_DUPLEX_FULL;
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

linkCfg->speed     = ENET_SPEED_10MBIT;
linkCfg->duplexity = ENET_DUPLEX_FULL;

The link partner is L2 Switch (CentreCOM GS908M).
There is no problem with the link, but the L2 Switch statistics show a receive error.
Reception is available.
100M/1Gb is not a problem (DHCP works well)

Can this problem be solved by DP83867 configuration?

over 1 year ago

0 Shaunak Deshpande over 1 year ago

TI__Genius 12571 points

Hi mshino,

Let me try and reproduce it locally and get back with an update as soon as possible.

Regards,
Shaunak

0 Shaunak Deshpande over 1 year ago

TI__Genius 12571 points

Hi mshino,

I was able to reproduce the same behavior locally, For the 10 Mbps to be enabled, seems like we need to make a change in the driver, the In-band mode needs to be enabled. By early next week I'll try to provide the what exactly needs to be done to enable 10 Mbps. Incase you want to try it yourself, I'll share some links

Regards,
Shaunak

0 mshino over 1 year ago in reply to Shaunak Deshpande

Prodigy 70 points

Hi, Shuaunak.

> Incase you want to try it yourself, I'll share some links

for now, I confirmed that EXT_EN bit CPSW_PN_MAC_CONTROL_REG(PORT1) solves this problem.

>By early next week I'll try to provide the what exactly needs to be done to enable 10 Mbps.

thanks a lot.

m,shino

0 PRADEEP HN over 1 year ago in reply to mshino

TI__Intellectual 1411 points

HI Shino,
Thanks for the confirming the fix. We will add this support officially in SDK in the future release. Would request to continue with your fix locally until then.

With regards,

Pradeep

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AM243x/CPSW/10Mbps packet transmission error