Allwinner A33(R16) based target doesn't shutdown completely

[Suniel Mahesh]

Hi all,

I am working on Allwinner A33(R16) based target board. I am testing the

dev board from bananapi M2 Magic.

I have the following problem:

1.

I have tested the BSP released from bananapi at this link:

https://github.com/BPI-SINOVOIP/BPI-M2M-bsp.

device runs on kernel 3.4 and ubuntu 16.04.

when I power down from linux command line the board turns off completely, no

voltages observed when tested with multimeter. Its a clean shutdown.

The PMIC AXP223 is off.

full log:

https://pastebin.com/KUa8ue46

2.

I have generated a BSP image from yocto using mainline u-boot, linux 5.14.

when I power down from linux command line the board doesn't turns off completely,

voltages observed when tested with multimeter. Its not a clean shutdown.

The PMIC AXP223 is still producing voltages. I am attaching a log after issuing

poweroff command:

https://pastebin.com/U5bYp6sJ

full log:

https://pastebin.com/iUnfD0gb

Please suggest.

Thanks and Regards

--

Suniel Mahesh

Embedded Linux and Kernel Engineer

Amarula Solutions India

[Christopher Vollo]

I also observed the issue with improper shutdown on the BPi M2M, and would like to know the answer to this question.

Thanks so much, 

Chris

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