imx8mn suspend question

1269813285 — Fri, 14 Aug 2020 03:56:25 GMT

1.question 1:

and when the cpu enter suspend mode ,it will waked up by RTC regularly.the log is attached.

I don't know why why the RTC wake up the cpu .is it normal or abnormal?

2.question2:

by click power key ,we can enter suspend mode,and I want to know how we can enter into idle mode.

could you please tell me how to enter idle mode?

Best regards

Wei

Re: imx8mn suspend question

igorpadykov — Fri, 14 Aug 2020 09:59:58 GMT

Hi Wei

one can look at RTC wake up in unit test and check if these codes are used in

custom software

rtcwakeup.c\mxc_rtc\test - imx-test - i.MX Driver Test Application Software

idle mode usage is described in sect.2.5 Power Management i.MX Linux Reference Manual

"IDLE Mode: This mode is defined as a mode which CPU can automatically enter
when there is no thread running and all high-speed devices are not active."

Best regards
igor
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