dm: rpi: Move Raspberry Pi to use driver model
Get series with b4
b4 am [email protected]Versions newest first
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Cover letter [U-Boot] [PATCH 0/4] dm: rpi: Move Raspberry Pi to use driver model
Quoted 60 lines · Simon Glass
Hi Stephen,
Quoted 57 lines · Stephen Warren
Quoted 46 lines · Simon Glass
Hi Stephen,
Quoted 31 lines · Stephen Warren
Quoted 4 lines · Stephen Warren
Quoted 3 lines · Simon Glass
This series adds driver model support to the GPIO and serial drivers used by Raspberry Pi, and moves Raspberry Pi over to driver model.
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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 <[email protected]>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: 0Using default environment
In: serial Out: lcd Err: lcdQuoted 11 lines
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)Quoted 3 lines
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
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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