From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: N900 device tree conversion: how to do first step Date: Thu, 13 Jun 2013 07:10:01 -0700 Message-ID: <20130613141001.GF8164@atomide.com> References: <20130609015944.GA23559@amd.pavel.ucw.cz> <20130609201119.GA3190@blackmetal.musicnaut.iki.fi> <20130613132624.GA3464@amd.pavel.ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20130613132624.GA3464@amd.pavel.ucw.cz> Sender: linux-kernel-owner@vger.kernel.org To: Pavel Machek Cc: Aaro Koskinen , pali.rohar@gmail.com, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org List-Id: linux-omap@vger.kernel.org * Pavel Machek [130613 06:32]: > Hi! > > > > I'd like to convert Nokia N900 to device tree. > > > > > > Unfortunately, serial port is not easily available (very special cable > > > would be needed, does someone know where to get one?) and I don't have > > > BDI (and very special cable would be needed, too). > > > > > > So I tried doing very small first step, hoping that I get booting > > > system... obviously I did not. > > > > The following works for me, it's enough to boot and get the USB networking > > working. After that I can connect to the device with ssh. I don't use > > serial either, I just have initramfs with busybox+dropbear with hardcoded > > interface setup. > > Nice.... thanks a lot. > > Did you get video to work with the device tree? That's what I'd like > to accomplish now. The DSS code is still using pdata, see mach-omap2/dss-common.[ch]. > If I init spi manually (and some more hacks), it works in the > qemu. But I have not tested on real hw for a while. You should be able to initialize spi by adding the .dts entry, or is there something missing in drivers/spi/spi-omap2-mcspi.c? Regards, Tony