Well, f you have the hardware, then there's only one way to find out:
- Apply patchset
- Add following into boards defconfig:
CONFIG_AXP_ALDO3_INRUSH_QUIRK=y 3) If it still fails to reboot, add following CONFIG_AXP_ALDO3_VOLT_SLOPE_08=y
Hmm... I tried it and it worked: it now reboots flawlessly. I tried it first with both setting, then only with the first... ... then without any ... then back with my old U-Boot and now I can't reproduce the hang that normally happens at almost every reboot. Not sure if I should rejoice or what.
One thing I noticed along the way: on my Orange Pi mini, there's a regression in U-Boot that happened between 2015.07 and 2015.10. All version I tried starting with 2015.10 cause a constant "humming" on the audio output (the plain old TRRS plug audio output).
During a reboot, the humming briefly disappears after Linux causes the reboot and before U-Boot has fully started, but it quickly comes pretty loudly. As soon as U-Boot passes the control to the Linux kernel the humming gets a bit less loud, but remains there. Playing a song doesn't seem to affect the humming.
Interestingly, if I boot a Linux kernel with HDMI support, then at some point during the Linux boot, the humming disappears. But sadly, I need to use a DTB with the HDMI output disabled because of some unexplained interaction with the normal audio codec (see the «Odd "jump" when playing music on A20» thread in the linux-sunxi mainling list, spanning July to October).
Stefan "back at U-Boot 2015.07"