[U-Boot] [PATCH 0/4] dm: rpi: Move Raspberry Pi to use driver model

[Simon Glass]

Hi,

On 25 October 2014 at 23:10, Simon Glass <sjg at chromium.org> wrote:
> Hi Stephen,
>
> On 25 Oct 2014 23:08, "Stephen Warren" <swarren at wwwdotorg.org> wrote:
>>
>> On 10/25/2014 09:47 PM, Simon Glass wrote:
>> > Hi Stephen,
>> >
>> > On Oct 25, 2014 9:43 PM, "Stephen Warren" <swarren at wwwdotorg.org
>> > <mailto:swarren at wwwdotorg.org>> wrote:
>> >>
>> >> On 10/21/2014 08:04 PM, Simon Glass wrote:
>> >> > Hi Stephen,
>> >> >
>> >> > On 20 October 2014 20:23, Stephen Warren <swarren at wwwdotorg.org
>> > <mailto:swarren at wwwdotorg.org>> wrote:
>> >> >> On 10/19/2014 09:14 PM, Simon Glass wrote:
>> >> >>> Hi Stephen,
>> >> >>>
>> >> >>> On 17 October 2014 20:51, Stephen Warren <swarren at wwwdotorg.org
>> > <mailto:swarren at wwwdotorg.org>> wrote:
>> >> >>>> On 09/30/2014 07:41 PM, Stephen Warren wrote:
>> >> >>>>> On 09/22/2014 05:30 PM, Simon Glass wrote:
>> >> >>>>>> This series adds driver model support to the GPIO and serial
>> > drivers used
>> >> >>>>>> by Raspberry Pi, and moves Raspberry Pi over to driver model.
>> >> >>>>>>
>> >> >>>>>> This requires adding driver model support to the pl01x serial
>> > driver, and
>> >> >>>>>> replacing the bcm2835 GPIO driver with a driver model version
>> > (since there
>> >> >>>>>> are no longer clients that don't use driver model).
>> >> >>>>>>
>> >> >>>>>> See u-boot-dm.git branch rpi-working for the tree this is based
>> >> >>>>>> on.
>> >> >>>>>
>> >> >>>>> The series,
>> >> >>>>> Tested-by: Stephen Warren <swarren at wwwdotorg.org
>> > <mailto:swarren at wwwdotorg.org>>
>> >> >>>>
>> >> >>>> Hmm. I take that back. Patch 4 causes a problem, at least when
>> > applied
>> >> >>>> on top of u-boot/master from today.
>> >> >>>>
>> >> >>>> Basic serial output works just fine, and I can interact with
>> >> >>>> U-Boot
>> >> >>>> without issue. However, when the boot scripts execute and load an
>> >> >>>> extlinux.conf, U-Boot hangs. Up to patch 3, everything is fine.
>> >> >>>>
>> >> >>>> U-Boot 2014.10-00004-g7830ed7 (Oct 17 2014 - 20:47:19)
>> >> >>>>
>> >> >>>> DRAM:  480 MiB
>> >> >>>> WARNING: Caches not enabled
>> >> >>>> MMC:   bcm2835_sdhci: 0
>> >> >>>> Using default environment
>> >> >>>>
>> >> >>>> In:    serial
>> >> >>>> Out:   lcd
>> >> >>>> Err:   lcd
>> >> >>>> reading /uEnv.txt
>> >> >>>> 24 bytes read in 14 ms (1000 Bytes/s)
>> >> >>>> Hit any key to stop autoboot:  0
>> >> >>>> switch to partitions #0, OK
>> >> >>>> mmc0 is current device
>> >> >>>> Scanning mmc 0...
>> >> >>>> Found /extlinux/extlinux.conf
>> >> >>>> Retrieving file: /extlinux/extlinux.conf
>> >> >>>> reading /extlinux/extlinux.conf
>> >> >>>> (U-Boot hangs here)
>> >> >>>>
>> >> >>>
>> >> >>> Can you please point me to where I can get an image to try this
>> >> >>> with?
>> >> >>> Also did you check with dm/next? There may be dependent patches,
>> >> >>> although the nature of the problem suggests not.
>> >> >>
>> >> >> I use (a pretty old version of, but I doubt that matters) RPi
>> >> >> Foundation's Raspbian image, and compiled the kernel and U-Boot
>> >> >> according to:
>> >> >>
>> >> >>
>> >
>> > http://elinux.org/index.php?title=RPi_Upstream_Kernel_Compilation&oldid=351104
>> >> >>
>> >> >> http://elinux.org/RPi_U-Boot
>> >> >>
>> >> >
>> >> > I installed the Raspbian image but I don't get uImg.txt nor the same
>> >> > boot sequence. I am able to boot a kernel though.
>> >> >
>> >> > Do you have your settings or images uploaded somewhere? Also please
>> >> > confirm you used dm/next.
>> >>
>> >> FWIW, the content in the following branches does seem to work:
>> >>
>> >> u-boot/master
>> >> 5b3ee38 kbuild: clear VENDOR variable to fix build error on tcsh
>> >>
>> >> u-boot-dm/master
>> >> c2ded96 serial: remove uniphier_serial_initialize() call
>> >>
>> >
>> > In what way?
>>
>> I ran U-Boot, and let it boot a kernel via extlinux.conf.
>
> Ok that is probably just because I didn't pull in the patch you said was a
> problem.
>
>>
>> Note that I said it worked, not that it failed.
>
> I did misread this...
>
> Regards,
> Simon

I started a new thread here:

http://u-boot.10912.n7.nabble.com/Raspberry-Pi-with-driver-model-td197255.html

Regards,
Simon