topic Re: Why target fails to power off on IMX6 sabre auto in i.MX Processors

Why target fails to power off on IMX6 sabre auto

huyadi — Fri, 01 Jul 2016 10:16:02 GMT

1: Boot IMX6 board (only sabre auto)

2:Use "poweroff" or "shutdown -h 0" commands

3: target is still alive

I tested with freescale's sdk based 3.10 branch, the target fails to power off too.

git://git.freescale.com/imx/linux-2.6-imx.git

git branch * imx_3.10.17_1.0.0_ga "

pm_power_off function works well on sabreSD target via operate regiester on rtc-svns.c, it seems rtc-svns can not power off sabre auto, do you know why it is and how to power it off?

thanks a lot

Re: Why target fails to power off on IMX6 sabre auto

igorpadykov — Sat, 02 Jul 2016 01:52:05 GMT

Hi hu

sabre auto has different circuitry related to pmic_on_req,

like J5 (Automatic Power On) on SCH-27142.pdf, so one can check it.

Best regards

igor

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Re: Why target fails to power off on IMX6 sabre auto

huyadi — Mon, 04 Jul 2016 02:04:59 GMT

thanks your reply, but I attempted to lift J5 jumper according to Quick Start Guide.

J5:

1–2 CAN control of system power

2–3 Processor control of system power (default)

the target stiil fails to power off with both setting, do you know why?

thanks advance.

Re: Why target fails to power off on IMX6 sabre auto

huyadi — Fri, 15 Jul 2016 01:17:35 GMT

I can't figure out what your said, I mean kernel seems to be properly shut downed, but pm_power_off() doesn't cut off the electric power,

system remains in powered state

do you know which FSL's kernel version can resolve the issue?

Yadi