[U-Boot] [BUG] bootloop with 2019-07 on Bananapi-r2

[Frank Wunderlich]

2019-07 introduced a new function initr_watchdog include/wdt.h with commit 06985289d452ad2423145cfed8cece61a7f8cec6 which seems to be the problem here

the commit shows some boards where the reset is removed

board/mediatek/mt7623/mt7623_rfb.c does not contain such watchdog_reset function so it was not called before

in common/board_r.c this function gets called for all boards if CONFIG_WDT is defined

in my config WDT is set to y but watchdog is set to n

i found this fix:

https://patchwork.ozlabs.org/patch/1113120/

but this does not solve the probleme described here...only there is a delay between resets

regards Frank


> Gesendet: Sonntag, 23. Juni 2019 um 13:23 Uhr
> Von: "Frank Wunderlich" <frank-w at public-files.de>
> An: "Frank Wunderlich" <frank-w at public-files.de>
> Cc: u-boot at lists.denx.de
> Betreff: Aw: [U-Boot] [BUG] bootloop with 2019-07 on Bananapi-r2
>
> Hi again,
>
> whats the correct way to enable debug?
>
> i tried this (add #define DEBUG in common.h):
> https://stackoverflow.com/questions/31185603/enabling-debug-mode-for-denx-u-boot-2015-04-on-pandaboard-es
>
> => uboot does not load (version-line does get printed)
>
> then i've found this:
>
> https://lists.denx.de/pipermail/u-boot/2003-August/002196.html
>
> but DBGFLAGS does not exist in config.mk, i found also no dbg,debug or similar in Makefile and config.mk
>
> i found some debug-options in menuconfig, but don't know which is the right one for this...
>
> maybe DEBUG_LL [=n] ?
>
> regards Frank
>
>
> > Gesendet: Sonntag, 23. Juni 2019 um 12:46 Uhr
> > Von: "Frank Wunderlich" <frank-w at public-files.de>
> > An: u-boot at lists.denx.de
> > Betreff: [U-Boot] bootloop with 2019-07 on Bananapi-r2
> >
> > Hi,
> >
> > i have an issue with 2019-07 (rc1 and rc4) on Bananapi-R2 (mt7623).
> >
> > from the bootlog (seems like WDT triggers a reset):
> >
> > U-Boot 2019.07-rc1-bpi-r2-00002-gb692d6e6b4 (Jun 23 2019 - 11:39:57 +0200)
> >
> > CPU:   MediaTek MT7623 E3
> > DRAM:  2 GiB
> > WDT:   Started with servicing (60s timeout)
> >
> > [USBD] USB PRB0 LineState: 0
> >
> >
> > the last line "[USBD]" is first line after reset (= first line after power on).
> >
> > No issue on 2019-04 final, here i see no WDT-line:
> >
> > U-Boot 2019.04-bpi-r2-00003-g0870aec1fb (Jun 23 2019 - 12:36:20 +0200)
> >
> > CPU:   MediaTek MT7623 E3
> > DRAM:  2 GiB
> > MMC:   mmc at 11230000: 0, mmc at 11240000: 1
> > Loading Environment from MMC... Boot From SD(id:1)
> >
> > *** Warning - bad CRC, using default environment
> >
> > In:    serial
> > Out:   serial
> > Err:   serial
> > Net:
> >
> > any idea how to get the cause? it is between 2019-04 final and 2019-07-rc1
> >
> > https://github.com/frank-w/u-boot/tree/2019-04-bpi-r2 <<< affected
> > https://github.com/frank-w/u-boot/tree/2019-07-bpi-r2 <<< not affected (=rc1, but tested also rc4)
> >
> > regards Frank
> >
> > _______________________________________________
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> > U-Boot at lists.denx.de
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> >
>