Configuration for TI INA3221

Autonomous Vehicles DRIVE AGX Thor DRIVE AGX Thor General
1

DRIVE OS Version: Provide DRIVE OS version. Example: 7.0.3

Issue Description:

There is no HW configuration for Texas Instruments INA3221 measurement chip in the device tree source configuration.

As per documentation, we should have INA3221 measurement chip to monitor the power usage of the GPU+SOC, CPU+CV, 5V input, and DDR power rails. The INA3221 is a three-channel, high-side current and bus voltage monitor with an I2C and SMBUS compatible interface.

But, there is no entry in the dts like

compatible = “ti,ina3221”;

Queries:

  1. Is this configuration missing expected?

  2. Could you please provide the correct hardware-specific values for:

  • The exact I2C bus the INA3221 is connected to.

  • The correct I2C address.

Note:

I have checked this missing configuration on both Orin & Thor.

Please let us know if you need any further information.

Just for reference:

I am able to read the temperature and manufacturing & Device IDs from TPM451 which is configured in the dts from i2c address 0x4C.

5

Dear @dasari.sampath ,
FYI, The power measurement tool(tegra-power-sensing.linux) is missing in DOS 7.0.3

Could you point me to file?

6

Hi Siva,

Thank you for the FYI. Since the power measurement tool (tegra-power-sensing.linux) is missing in DOS 7.0.3, this confirms that INA3221 is not available in this release.

Do we expect the INA3221 power measurement tool to be included in version 7.2.4?

Please let me know.