i.MX6DQ function using temp monitor other than thermal driver.

[satoshishimoda]

Hi community,

Our partner have a question about i.MX6DQ.

We understand thermal driver in Linux BSP (L3.10.17_1.0.0-ga) uses i.MX6DQ temperature monitor.

Then, are there any other function that use i.MX6DQ temperature monitor?

Actually, we knew the accuracy of the temperature monitor is not high in To disable i.MX6DQ thermal control with L3.10.17_1.0.0-ga.

So we want to stop using the temperature monitor for all functions.

Best Regards,

Satoshi Shimoda

[igorpadykov · Accepted solution]

Hi Satoshi

temperature is used by CPUFREQ Driver, please check Chapter 24

attached Linux Manual. Also one can look at

AN4579  i.MX 6 Series Thermal Management Guidelines p.71,

it describes software thermal power management.

Best regards

igor

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[satoshishimoda]

Hi Igor,

I understood CPUFreq driver does not use temperature monitor (TEMPMON) directory, but it uses TEMPMON via thermal driver in Linux BSP.

Was this wrong? CPUFreq driver and thermal driver use TEMPMON individually?

Best Regards,

Satoshi Shimoda

[igorpadykov]

Hi Satoshi

CPUFreq driver uses data from thermal driver.

It does not use TEMPMON directly.

~igor