AM69: AM69 devkit general purpose fuse programming

Shabnam Ab

Part Number: AM69
Other Parts Discussed in Thread: TDA4VH, AM68A, AM68,

Hello TI Team,

I would like to test programming (burning) general-purpose fuses and validate the process. What is the recommended way to confirm that fuse programming has succeeded on AM69? Are there any TI-provided tools (e.g., in SPL/U-Boot/SDK) to read back or verify fuse values?

I do not see the GP fuses exposed or mapped in Linux. Please clarify whether fuse visibility or access from Linux is supported on AM69, and if not, which boot stage or tool should be used for verification.

Thanks

Shabnam

5 months ago

0 Suman Anna 5 months ago

TI__Guru** 123255 points

Hi Shabnam,

Shabnam Ab said:
I would like to test programming (burning) general-purpose fuses and validate the process.

What do you mean by general-purpose fuses?

regards

Suman

0 Shabnam Ab 5 months ago in reply to Suman Anna

Prodigy 60 points

Hey Suman,

I meant EXT fuses.

Thanks

Shabnam

0 Suman Anna 5 months ago in reply to Shabnam Ab

TI__Guru** 123255 points

Hi Shabnam,

Shabnam Ab said:
I meant EXT fuses.

Still not clear. If you are asking about whether a device has been converted properly from HS-FS to HS-SE, please refer to the following FAQ (applicable for AM69/TDA4VH as well):

[FAQ] TDA4VM: How to check device type (GP/HS-FS/HS-SE)?

If you are asking about whether KeyWriter programming itself is successful or not, you would need to rely on the MCU UART and Wkup UART logs from the KeyWriter run.

Please see the OTP KEYWRITER LOGS section of the PDK KeyWriter application documentation for an example log. The success of the KeyWriter run is indicated by the following trace on MCU UART.

Debug response: 0x0

Please also see the OTP KeyWriter Error Codes section of the TI-SCI documentation to decode various errors here.

regards

Suman

PS: Please note that AM68/AM68A and AM69/AM69A devices are no longer supported on public E2E forums as per the support notice posted here:

[FAQ] Important Notice for Support transition for AM68/AM68A and AM69/AM69A devices

Please reach out to TI support partners for new engagements on these devices. If you are an existing customer for the platform and need support please reach out to your local TI contact for further guidance.

Processors

Processors forum

AM69: AM69 devkit general purpose fuse programming