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Linux/TPS65217: Not able to reboot the device (Custom AM335x based board)

Moses Christopher Bollavarapu
Intellectual 980 points
Part Number: TPS65217

Tool/software: Linux

Hi,

I was facing some issue related to the reboot of the device.

It was like, when I issue poweroff command from linux, the device gets powered off,

and when I issue reboot command then also the device gets powered off but doesn't reboot.

For your infomation,

  • I am using a custom AM335x based board, with TPS65217 as the secondary PMIC and there is a primary PMIC which mainly act as buck-boost converter.
  • The primary PMIC controls the TPS65217, by disabling or making ENABLE pin of Primary PMIC as low, the TPS65217 would be switched off.
  • The only way to turn on the device now is by making the ENABLE pin of Primary PMIC go HIGH.
  • 0
    TI__Genius 9380 points
    Moses,
    I have forwarded your question to our product specialist to see if he can help you with this. You should hear from him later today.
  • 0
    TI__Mastermind 30280 points
    Please attach a schematic of the TPS65217, showing how the "primary" Buck-Boost connects to the TPS65217 device.

    The "reboot" command does not mean anything to the TPS65217 PMIC itself. Do you know what pins are modified by the "reboot command". It should be the nRESET pin on the PMIC.

    If the nRESET pin goes low and returns high, the PMIC should restart in 1s after the nRESET pin returns high.