AM6412: Uboot Query

Hii Experts

I am using custom board with am6412 soc,now i am able to get uboot but 1G phy is not working,there is some issues,i am attaching the logs 

U-Boot SPL 2021.01-g2ee8efd654 (Aug 26 2023 - 11:43:34 +0000)
EEPROM not available at 80, trying to read at 81
Reading on-board EEPROM at 0x51 failed 1
Resetting on cold boot to workaround ErrataID:i2331
resetting ...

U-Boot SPL 2021.01-g2ee8efd654 (Aug 26 2023 - 11:43:34 +0000)
EEPROM not available at 80, trying to read at 81
Reading on-board EEPROM at 0x51 failed 1
SYSFW ABI: 3.1 (firmware rev 0x0008 '8.6.4--v08.06.04 (Chill Capybar')
SPL initial stack usage: 13424 bytes
Trying to boot from DFU
#############################################DOWNLOAD ... OK
Ctrl+C to exit ...
Authentication passed
Authentication passed
Authentication passed
Authentication passed
init_env from device 10 not supported!
Starting ATF on ARM64 core...

NOTICE: BL31: v2.8(release):v2.8-226-g2fcd408bb3-dirty
NOTICE: BL31: Built : 07:31:04, Aug 22 2023
I/TC:
I/TC: OP-TEE version: 3.20.0 (gcc version 9.2.1 20191025 (GNU Toolchain for the A-profile Architecture 9.2-20194
I/TC: WARNING: This OP-TEE configuration might be insecure!
I/TC: WARNING: Please check optee.readthedocs.io/.../porting_guidelines.html
I/TC: Primary CPU initializing
I/TC: SYSFW ABI: 3.1 (firmware rev 0x0008 '8.6.4--v08.06.04 (Chill Capybar')
I/TC: HUK Initialized
I/TC: Activated SA2UL device
I/TC: Enabled firewalls for SA2UL TRNG device
I/TC: SA2UL TRNG initialized
I/TC: SA2UL Drivers initialized
I/TC: Primary CPU switching to normal world boot

U-Boot SPL 2021.01-g2ee8efd654 (Aug 26 2023 - 11:43:28 +0000)
EEPROM not available at 80, trying to read at 81
Reading on-board EEPROM at 0x51 failed 1
SYSFW ABI: 3.1 (firmware rev 0x0008 '8.6.4--v08.06.04 (Chill Capybar')
Trying to boot from DFU
#####DOWNLOAD ... OK
Ctrl+C to exit ...
Authentication passed
Authentication passed

U-Boot 2021.01-g2ee8efd654 (Aug 26 2023 - 11:43:28 +0000)

SoC: AM64X SR2.0 HS-FS
Model: Texas Instruments AM642 EVM
EEPROM not available at 80, trying to read at 81
Reading on-board EEPROM at 0x51 failed 1
DRAM: 2 GiB
NAND: 0 MiB
MMC: mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from FAT... MMC: no card present
In: serial@2800000
Out: serial@2800000
Err: serial@2800000
EEPROM not available at 80, trying to read at 81
Reading on-board EEPROM at 0x51 failed 1
Net: Could not get PHY for ethernet@8000000port@1: addr 0
am65_cpsw_nuss_port ethernet@8000000port@1: phy_connect() failed
No ethernet found.

Hit any key to stop autoboot: 0

According to our design,i have configured all the gpio pins,but i am facing the phy issues,can anyone help to solve this issue?

Hi Experts,

Please find the attached schematic section for your referance.

ETH_PHY_AM64.pdf

Hi,

Could you please describe the boot flow? It looks like you are starting with USB and then transitioning to Ethernet. What does the u-boot DTS have for the CPSW node?

Best Regards,

Schuyler

Hi Schuyler

Thanks for the response

yes correct we are booting with usb upto u-boot,then we try to do tftp ,at that time ethernet is not working fine,device detected but data transfer is not happening,while trying mdio list command ,device is showing with part number.

Hi,

If I understand correctly what you are showing me are you trying to use one of the PRU-ICSSG ethernet ports to do the TFTP boot?

If that is the case this will not work since the ICSSG ports need a driver loaded. Is one of the CPSW ports available?

Best Regards,

Schuyler

Hi Schuyler

If I understand correctly what you are showing me are you trying to use one of the PRU-ICSSG ethernet ports to do the TFTP boot? -----> yes

If that is the case this will not work since the ICSSG ports need a driver loaded. Is one of the CPSW ports available?----> there is no cpsw port,only icssg port available,Is there any method available to use icsssg driver and make this 1G works ?

Hi,

This could possibly explain why the ethernet is not functioning. There are drivers required for the icssg to function. Usually these are loaded as the kernel boots. To my knowledge not available in u-boot. I will ask a team member to assist with this question.

Best Regards,

Schuyler