2.6.34-rc3 kernel on devkit8000, DSS2 issue, omapfb probe failing

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1

Hi,

I recently cloned linus-omap kernel and compiled uImage for devkit8000.
During loading uImage into the board, it boots fine, except nand and display.
I am facing an OmapDSS issue, the error messages from
kernel is below:

kernel version is 2.6.34-rc3-07875-geba0147-dirty
…
NR_IRQS:402
Clocking rate (Crystal/Core/MPU): 26.0/266/500 MHz
Reprogramming SDRC clock to 266000000 Hz
dpll3_m2_clk rate change failed: -22
GPMC revision 5.0
…
io scheduler cfq registered (default)
OMAP DSS rev 2.0
omapdss DPI error: can’t get VDDS_DSI regulator
omapdss CORE error: Failed to initialize dpi
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
…
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev
1
omapfb omapfb: no displays
omapfb omapfb: failed to setup omapfb
omapfb: probe of omapfb failed with error -22
regulator_init_complete: incomplete constraints, leaving VDVI on
regulator_init_complete: incomplete constraints, leaving VDAC on
twl_rtc twl_rtc: setting system clock to 2000-01-01 00:00:00 UTC
(946684800)
eth0: link down

How to overcome this and get the display up and running.

2

Where were you downloaded the kernel source?

try http://gitorious.org/devkit8000
download source by:

git clone git://gitorious.org/devkit8000/devkit8000.git linux-dk

and update by:

cd linux-dk
git pull

I recommand use this uImage with U-Boot v2009.11.1
source from ftp://ftp.denx.de/pub/u-boot/
The latest version is 2010.03, but I didn’t tried whether it works or not.

p.s. the X-Loader (MLO) I used is 1.41 version one from DevKit8000 CD.

3

i downloaded the source from linux-omap-2.6 git tree

git clone git://[git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git](http://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git)
4

Hi,

try git clone git://gitorious.org/devkit8000/devkit8000.git

it follows the linux-omap with the patches that will go upstream.

Thomas

5

Hi,

I am now using git://gitorious/devkit8000/devkit8000.git

I am gettting these errors, when i provide omapdss_disp=tv omapfb.mode=tv:ntsc

my vram setting is 0.

omapfb omapfb: failed to allocate framebuffer
[ 670.690826] omapfb omapfb: failed to allocate fbmem
[ 670.695861] omapfb omapfb: failed to setup omapfb
[ 670.700622] omapfb: probe of omapfb failed with error -12

Also, strange things happen, when i provide vram=12M, it crashes…

6

Hello,

I don’t know if it is a typo but it should be

omapdss.def_disp=tv omapfb.mode=tv:ntsc

Thomas