AM2634: sysconfig don't initialize AM2634 TX_EN pin when used CPSW RMII mode

ych_chn

Part Number: AM2634
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

I want to use the PHY of AM2634's CPSW driver DP83822, the mcu+sdk examples are all based on sysconfig, but I want to switch from RGMII mode to RMII to drive DP83822 (since DP83822's TI driver only supports RMII, DP83822 itself supports MII/RMII/RGMIII), but obviously the pin initialization is missing the TX_EN pin, is this a sysconfig bug? At present, I have not passed the debugging of AM2634+RMII+dp83822, and I am still looking for the problem. Could you please provide the demo of RMIII, or can TI continue to improve the DP83822 driver to support RGMII? My reference is as follows：[FAQ] AM2634: Integration of PHY driver on custom board - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

over 1 year ago

0 ych_chn over 1 year ago

Intellectual 345 points

By the way, whether sysconfig can support MII

+1 Shaunak Deshpande over 1 year ago in reply to ych_chn

TI__Genius 16402 points

Hi,

This is a known bug in syscfg which is in process of being fixed and tested.

If you are on MCU_PLUS_SDK v09.02 (latest public SDK), you can apply the following patch to get RMII working in syscfg with the initialization of the pin done. This will officially be fixed in MCU_PLUS_SDK 10.00 releasing towards the end of this month.

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/908/rmii_5F00_patch.patch

MII configuration support will also be added. If you do not wish to wait for the end of month release, you can also get the SDK from our GitHub (github.com/.../mcupsdk-core), which will be updated by Wednesday next week.

Regards,
Shaunak

0 ych_chn over 1 year ago in reply to Shaunak Deshpande

Intellectual 345 points

Thank you very much for your reply, which solved my problem. Now the TX_EN pin initialization of RMII is normal, but I still want to know, 1. Can I use RGMII1 and RMII2 at the same time? It seems that syscfg does not support this configuration. 2. Is there any plan to add support for RGMII and MII for DP83822 driver?