TDA4VM: How to realize restarting automatically on TDA4

SandalHao

Part Number: TDA4VM

Hi, sir!We have the following scenarios on our custom TDA4 board:

After starting the kernel, if the kernel fails to start for some reason, tda4 will restart automatically, and then uboot starts the backup kernel.

Therefore, we need a common interface strategy, such as watchdog, which is opened after the startup of uboot. If the kernel fails to start, resulting in the subsequent failure of normal dog feeding, tda4 will automatically restart.

Is there an interface or service for me to realize it?

Thanks!

over 4 years ago

0 Keerthy J over 4 years ago

TI__Guru**** 156600 points

Hi,

There is RTI watchdog driver support in u-boot: drivers/watchdog/rti_wdt.c

The device tree entries are also present. You will need to enable CONFIG_WDT_RTI in u-boot.

Let me know if you need more details.

- Keerthy

0 SandalHao over 4 years ago in reply to Keerthy J

Intellectual 665 points

Thanks!

I need more details about how to use it

0 Keerthy J over 4 years ago in reply to SandalHao

TI__Guru**** 156600 points

Hi,

I recommend going through u-boot documentation. There is no ready example that I can point you to.
I will need couple of days to figure this out.

Thanks,
Keerthy

0 Keerthy J over 4 years ago in reply to Keerthy J

TI__Guru**** 156600 points

Hi,

Can you enable CONFIG_CMD_WDT this will give you command line interface to check watchdog instances on u-boot.
I have not been able to check on the board. The above should be a simple way to check the watchdogs on u-boot.

Thanks,
Keerthy

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TDA4VM: How to realize restarting automatically on TDA4