SK-AM62: Boot mode switch not working

Hello Muthukumar MK

Thank you for the query.

Please refer to the below FAQ and verify the boot mode setting.

(15) [FAQ] SK-AM62: FAQ: How do I set the DIP switches to get a certain boot mode? - Processors forum - Processors - TI E2E support forums

Please note the switch number and the pin numbering.

If possible, please probe the boot mode configuration.

Regards,

Sreenivasa

OK Sreenivasa,

Will probe and confirm the configuration.

Please have a look at this post, in which doubted any hardware corrections to be done or not ?

"https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1222626/processor-sdk-am62x-booting-from-emmc/4619241#4619241"

Thanks,

Muthukumar

Hello Muthukumar

For the E1 please refer the below switch configuration.

Please note the orientation. 

Ex SW1, switch 8 is bit 0.

Pls trying to configure as below and let me know your observations.

E1 boot configuration

https://www.ti.com/lit/pdf/spruj40

Regards,

Sreenivasa

Hello Muthukumar

I looked at the other thread and the setting.

FYI, the below is the orientation for E2/E3. It is important to not the orientation representation in the diagram.

E2/E3 boot configuration

Since as per the thread above, you have the E1 board. You could use the configuration i showed in the previous message.

If the other board you have is a E2/E3 board, please follow the configuration shown in this message.

Regards,

Sreenivasa

Hi Sreenivasa,

uSD boot worked, will try other boot mode as well and update you.

Thanks,

Muthukumar

Hello Muthukumar

Thank you.

Please let me know how the testing of the other boot modes progresses.

Regards,

Sreenivasa

Hi Sreenivasa,

I am able to boot from uSD, UART and eMMC, but still USB(DFU) booting is not happening.

attached the boot switch image and #dfu-util -l output in host PC

Thanks,

Muthukumar

Hello Muthukumar

Thank you for the inputs and good to note that the bootmode configurations are working.

Can you please describe the USB(DFU) bootmode setup to check internally.

Regards,

Sreenivasa

Hello Muthukumar

Please refer below inputs i received:

E1 SK, which sysboot pin switches have opposite oringation from E2/E3. It seems the customer uses Linux host, they can check 'demsg' log on the host, the last few lines of the log should say "Texas Instruments DFU", something like this. If the host doesn't have this message, the sysboot switches are not in DFU mode

Regards,

Sreenivasa

Hi Muthukumar,

Muthukumar MK said:

attached the boot switch image and #dfu-util -l output in host PC

Does your PC dmesg log has the following lines towards the end? The last 3 lines show the PC detects the AM62x in DFU mode. If your PC dmesg log doesn't have these messages, it sounds your board sysboot switches are not set to DFU boot mode.

[2319792.766979] usb 1-1.3: new high-speed USB device number 16 using ehci-pci
[2319792.875822] usb 1-1.3: New USB device found, idVendor=0451, idProduct=6165
[2319792.875825] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[2319792.875827] usb 1-1.3: Product: AM62x DFU
[2319792.875829] usb 1-1.3: Manufacturer: Texas Instruments, Inc.
[2319792.875830] usb 1-1.3: SerialNumber: 01.00.00.00

Hi Sreenivasa,

Trying to boot the target in USB peripheral mode by referring "https://dev.ti.com/tirex/explore/node?node=A__AItqmr6vcSPNAPL5H6GNHA__linux_academy_am62x__XaWts8R__LATEST"

in dmesg log there is no such device enumerated.

attached my switch settings image in previous thread.

Note:

in AM62AX it was working fine "">e2e.ti.com/.../4605544

Thanks,

Muthukumar

Hi Liu,

In dmesg log there is no such logs !

Thanks,

Muthukumar

Hello Muthukumar

Please refer below in the EVM user guide:

The E1 board USB0 doesn't support USB device mode because of the on-board usb hub...

3.3 Issue 3 - USB Boot descoped on E1
Applicable EVM Revisions: E1
Issue Description: Due to the USB0 port being routed through a Hub IC to the Type-A connector, USB boot cannot be supported on E1 boards.
Fix: E2 boards and newer use USB1 to the type-A connector and have moved the USB0 controller used for boot to the second USB Type-C port so that both DFU and MSC boot can be supported. The USB hub IC has also been dropped to simplify board layout and BOM.

https://www.ti.com/lit/pdf/spruj40

Regards,

Sreenivasa

ok thanks Sreenivasa.

will try to get newer version EVM and try USB boot..

Thanks,

Muthukumar

Thank you Sreenivasa.