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

[Stephen Warren]

On 10/19/2014 09:14 PM, Simon Glass wrote:
> Hi Stephen,
> 
> On 17 October 2014 20:51, Stephen Warren <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>
>>
>> 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