topic shutdown from u-boot in i.MX Processors

shutdown from u-boot

Ralf_Rademacher — Thu, 09 Jan 2025 13:55:27 GMT

Hi there,

is it possible to power off from u-boot via command?

best regards

Ralf

Re: shutdown from u-boot

JorgeCas — Thu, 09 Jan 2025 15:57:46 GMT

Hello,

Yes, it is possible using the next command:

poweroff

It should be supported your U-boot configuration and PMIC's driver.

Best regards.

Re: shutdown from u-boot

Ralf_Rademacher — Thu, 09 Jan 2025 18:04:58 GMT

does not work for me

u-boot=> poweroff
Unknown command 'poweroff' - try 'help'
u-boot=>

Re: shutdown from u-boot

JorgeCas — Thu, 09 Jan 2025 19:26:03 GMT

Hello,

This means that the command is not enabled and you need to configure it and build U-boot with the changes.

CONFIG_CMD_POWEROFF should be enabled in the board configuration. Also, make sure that the PMIC's driver supports this feature and the On/Off signal is correctly routed/configured.

Best regards.

Re: shutdown from u-boot

Ralf_Rademacher — Sat, 25 Jan 2025 20:07:46 GMT

Thank you JorgeCas,

for your answer.

Is somewhere a good tutorial, how to do this? I'm a novice with it. I know that pmic is pca9450. I don't know if driver supports it.

Best regards

Ralf