Hi Priit, On Mon, 19 Nov 2018 at 19:08, Priit Laes <[email protected]> wrote: > > On Sun, Nov 18, 2018 at 06:12:34PM +0000, Priit Laes wrote: > > On Sat, Nov 17, 2018 at 05:19:38PM +0100, Paul Kocialkowski wrote: > > > Hi, > > > > > > On Fri, 2018-11-16 at 15:07 +0000, Priit Laes wrote: > > > > On Fri, Nov 16, 2018 at 03:46:14PM +0100, Jens Thiele wrote: > > > > > Priit Laes <[email protected]> writes: > > > > > > > > > > > Heya! > > > > > > > > > > > > I've been running into intermittent u-boot hangs > > > > > > (latest u-boot and kernel mainline versions) on various > > > > > > Olimex A20 Lime2 boards. These hangs seem to happen always > > > > > > in the same spot after rebooting mainline kernel: > > > > > > > > > > > > [snip] > > > > > > U-Boot SPL 2018.11-rc2-00064-gada6bb81d9-dirty (Nov 16 2018 - > > > > > > 15:48:29 +0200) > > > > > > DR > > > > > > [/snip] > > > > > > > > > > > > Any ideas what to test? > > > > > > > > > > is your power supply unit strong enough? (especially if you have LCD > > > > > displays attached) > > > > > > > > Should be, 2A 5V brick via barrel connector. > > > > > > > > Other things connected: > > > > - serial (uart) > > > > - ethernet cable > > > > - hdmi cable > > > > - otg cable > > > > > > I have been experiencing the same issue on an A20-OLinuXino-Lime2 (non- > > > eMMC). It seems to happen when rebooting from the kernel, but not with > > > the "reset" command in U-Boot. > > > > Yes, confirming that reset command from u-boot works.
> > OK, I managed to track it down to enabling ALDO3 regulator. > Unfortunately adding delays did not help, and only thing > that seems to be working is to disable regulator in the > configuration (CONFIG_AXP_ALDO3_VOLT ): > Probably related to this old thread - https://lists.denx.de/pipermail/u-boot/2017-March/282789.html > [snip] > diff --git a/board/sunxi/board.c b/board/sunxi/board.c > index d1d7f9f400..70d8e7a0f7 100644 > --- a/board/sunxi/board.c > +++ b/board/sunxi/board.c > @@ -552,14 +552,22 @@ void sunxi_board_init(void) > defined CONFIG_AXP818_POWER > power_failed |= axp_set_aldo1(CONFIG_AXP_ALDO1_VOLT); > #endif > + puts("aldo2\n"); > + udelay(100000); > power_failed |= axp_set_aldo2(CONFIG_AXP_ALDO2_VOLT); > #if !defined(CONFIG_AXP152_POWER) > + puts("aldo3\n"); > + udelay(100000); > power_failed |= axp_set_aldo3(CONFIG_AXP_ALDO3_VOLT); > #endif > #ifdef CONFIG_AXP209_POWER > + puts("aldo4\n"); > + udelay(100000); > power_failed |= axp_set_aldo4(CONFIG_AXP_ALDO4_VOLT); > #endif > > + puts("OK?\n"); > + > #if defined(CONFIG_AXP221_POWER) || defined(CONFIG_AXP809_POWER) || \ > defined(CONFIG_AXP818_POWER) > power_failed |= axp_set_dldo(1, CONFIG_AXP_DLDO1_VOLT); > [/snip] > > > > > > > Cheers, > > > > > > Paul > > > > > > -- > > > Developer of free digital technology and hardware support. > > > > > > Website: https://www.paulk.fr/ > > > Coding blog: https://code.paulk.fr/ > > > Git repositories: https://git.paulk.fr/ https://git.code.paulk.fr/ > > > > > > -- > > > You received this message because you are subscribed to the Google Groups > > > "linux-sunxi" group. > > > To unsubscribe from this group and stop receiving emails from it, send an > > > email to [email protected]. > > > For more options, visit https://groups.google.com/d/optout. > > > > > > -- > > You received this message because you are subscribed to the Google Groups > > "linux-sunxi" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [email protected]. > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "linux-sunxi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. Regards, Jonathan -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
