From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Quadros Date: Wed, 07 Apr 2010 07:38:57 +0000 Subject: Re: [PATCH 0/5] OMAP: RX51: Add LCD Panel Support for N900 Message-Id: <4BBC3691.3030505@nokia.com> List-Id: References: <1269338191-10734-1-git-send-email-roger.quadros@nokia.com> <87pr2datft.fsf@small.ssi.corp> <4BBB03F2.5050706@nokia.com> <87iq84cnzg.fsf@small.ssi.corp> <1270618692.2447.39.camel@tubuntu.research.nokia.com> <87r5mrzpe4.fsf@small.ssi.corp> In-Reply-To: <87r5mrzpe4.fsf@small.ssi.corp> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ext Arnaud Ebalard Cc: "Valkeinen Tomi (Nokia-D/Helsinki)" , "tony@atomide.com" , "linux-omap@vger.kernel.org" , "linux-fbdev@vger.kernel.org" Hi, ext Arnaud Ebalard wrote: > Hi Tomi, > > Tomi Valkeinen 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