Xavier AGX I2C2 already has a device INA3221 whose address is 0x80

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
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Jetson AGX Xavier module’s I2C2 already has a device INA3221 whose address is 0x80, unfortunately I set a same I2C address device on I2C2 that I can’t access this device.
Can Xavier shutdown the INA3221? and how.
And can I know all the i2c devices in the module, especially the i2c addresses that is already used? So that I can avoid them in the future development.

Thanks a lot.

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hello csuexibq,

there’re two three-channel INA3221 power monitor for AGX Xavier, their I2C addresses are 0x40 and 0x41.
please refer to Software-Based Power Consumption Modeling for details.

please update kernel configuration, config INA3221, if you want to disable it.
btw, you should examine /sys/bus/i2c/devices/ for all the register devices.
thanks

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