Re: [PATCH 0/5] OMAP: RX51: Add LCD Panel Support for N900

Roger Quadros
2010-04-07T07:39:36Z

Hi,

ext Arnaud Ebalard wrote:
> Hi Tomi,
>
> Tomi Valkeinen <tomi.valkeinen@nokia.com> writes:
>
>> On Tue, 2010-04-06 at 22:41 +0200, ext Arnaud Ebalard wrote:
>>
>>> For the records, just in case someone wants to do the same, I had to
>>> use:
>>>
>>> /sbin/getty 115200 tty0 -n -l /bin/sh
>>>
>>> I also had to set CONFIG_KEYBOARD_TWL4030 to get the keyboard
>>> working. Any reason for that option not be enabled by default in
>>> rx51_defconfig?
>>>
>>> Additionally, after something like 25 seconds, the screen goes black and
>>> the device stops. Any clue? Can be panel realted?
>> I'm guessing here, but it could be the HW watchdog kicking in if by
>> "device stops" you mean that serial etc also stops. Although it should
>> reboot, not stop...
>
> Well, it's a stock N900, not a development board so I don't have a
> serial; only the screen and the led in the left corner below the
> screen. By "device stops" I mean that the screen and the led (which was
> previously on) get dark and stay as is.
>
> I also suspected a HW watchdog but 25 seconds did not sound like it. I
> built a kernel without HW watchdog: same result.
>
> Any idea regarding how I could debug that?
>
You can try disabling the hw watchdogs via flasher.

sudo flasher --set-rd-flags=no-omap-wd,no-ext-wd,no-lifeguard-reset

This should prevent any watchdog resets.

To restore to factory settings do

sudo flasher --disable-rd-mode

cheers,
-roger