[Letux-kernel] Strange problem with non-LPAE letux-4.20-rc kernels on 4GB Pyra only

[Andreas Kemnade]

On Tue, 4 Dec 2018 22:20:46 +0100
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:

> Hi,
> 
> > Am 04.12.2018 um 22:13 schrieb Andreas Kemnade <andreas at kemnade.info>:
> > 
> > On Tue, 4 Dec 2018 22:04:36 +0100
> > Andreas Kemnade <andreas at kemnade.info> wrote:
> >   
> >> On Tue, 4 Dec 2018 21:55:56 +0100
> >> "H. Nikolaus Schaller" <hns at goldelico.com> wrote:
> >>   
> >>> Hi,
> >>> for testing of some new patches I did compile some letux-4.20-rc5
> >>> in non-lpae mode and tried to boot on the 4GB Pyra.
> >>> 
> >>> Boot process ends with:
> >>> 
> >>> [    3.544616] input: user-button as /devices/platform/user-button/input/input0
> >>> [    3.555006] input: pyra-game-buttons as /devices/platform/pyra-game-buttons/input/input1
> >>> [    3.564689] input: pyra-lid-wakeup as /devices/platform/pyra-lid-wakeup/input/input2
> >>> [    3.575503] palmas-rtc 48070000.i2c:palmas at 48:rtc: setting system clock to 2000-01-02 10:57:35 UTC (946810655)
> >>> [    3.586006] sr_init: No PMIC hook to init smartreflex
> >>> [    3.592186] vmmcsdio_fixed: disabling
> >>> [    3.597267] ldo3: disabling
> >>> [    3.600850] ldo8: disabling
> >>> [    3.604153] modem_vbus_power: disabling
> >>> [    3.608201] otg_path: disabling
> >>> [    3.611513] ALSA device list:
> >>> [    3.614662]   No soundcards found.
> >>> [    3.618600] Waiting for root device PARTUUID=17b72d7a-02...
> >>>   
> >> AFAIK PARTUUID resolution is done by initrd normally?! So I am
> >> wondering why it ever has worked. Was there somehow a duplicate root=
> >> parameter, so 4.19 took the one it can process?
> >> 
> >>   
> > ok, did some RTFM... 
> > I was wrong.  
> 
> Ok.
> 
> Anyways it is becoming more strange now. I did boot the old Pyra
> from eMMC. With an 4.19.3 kernel. And it failed as well. But the
> 4.20-rc5 boots there.
> 
> Now I have different boot logs to compare:
> 4.19.3 on old Pyra fails
> 4.19.4 on new Pyra boots
> 4.20-rc5 on new Pyra fails
> 4.20-rc5 on old Pyra boots
> 
> What is the logic behind?
> 
> At least I can test the 4.20-rc5 on the old Pyra and try to search for panel enable calls.
> Well, it does not try to enable the panel.
> 
root at letux:~# cat /proc/cmdline 
root=PARTUUID=7d45bc20-02 rootwait console=ttyO2,115200n8 vram=12M omapfb.vram=0:8M,1:4M omapfb.rotate_type=0 omapdss.def_disp=lcd rootwait twl4030_charger.allow_usb=1 log_buf_len=8M ignore_loglevel earlyprintk
root at letux:~# uname -a
Linux letux 4.20.0-rc4-letux+ #3 SMP PREEMPT Fri Nov 30 20:38:05 CET 2018 armv7l GNU/Linux
root at letux:~# 

panel enable is called here (my tree).

Regards,
Andreas
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