AM62L: High CPU Temperature

Hello Parv,

Parv Patel said:

Currently, under idle conditions, the CPU temperature reaches around 50°C. I would like to understand if this is expected behavior for AM62Lx under normal operating conditions, or if it indicates a potential issue.

Can you please explain how this is being measured?

Is this on a TI EVM or custom hardware?

Best Regards,

Anshu

Hi Anshu,

I read temperature on node of build Linux from release 11.00.15.05: 
$ cat /sys/class/hwmon/hwmon0/temp1_input

I have custom hardware. 

Regards, 
Parv

Hello Parv,

Whats the reading of 'cat /sys/class/thermal/thermal_zone*/temp '?

Best Regards,

Anshu

Hello Anshu, 

Value of given node varies between 48146 to 50145. 

Best, 
Parv

Hello Parv,

Can you explain what the SoC is doing at this state when you are measuring the temperature? Please mention any peripherals that might be in use.

From there, we can discuss possible optimizations around your usecase.

Parv Patel said:

2. Is there a way to monitor the CPU frequency dynamically while Linux is running on AM62Lx? If yes, could you please suggest commands or tools? 

You can use the K3Conf tool (https://software-dl.ti.com/processor-sdk-linux/esd/AM62LX/latest/exports/docs/linux/How_to_Guides/Target/How_to_Use_K3Conf_Tool.html) or check /sys/kernel/debug/clk for the clock speeds.

Best Regards,

Anshu

Hello Anshu, 

Custom board is configured with below peripherals:

1. UART Interfaces (3 total):
    - One UART is continuously used for interfacing, handling both data transfer and processing.
    - The remaining two UARTs are utilized intermittently based on application requirements.

2. I2C Interfaces (2 total):
    - Two sensors are used continuously for data acquisition and configuration.
    - Two additional sensors are accessed periodically as needed.

3. I2S Interface (1 total):
    - One I2S interface is dedicated to continuous communication with an audio device.

Best,
Parv 

Hello Parv,

Those perihperals are not usually high temperature producers. What else on the SoC is running?

Thanks,

Anshu