From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: 4.13 (and probably all recent) kernels refuse to boot on one Nokia N950, work or another Date: Thu, 26 Oct 2017 11:13:26 +0200 Message-ID: <20171026091325.GA26929@amd> References: <20171025203459.GA22035@amd> <20171025212806.GA21504@atomide.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="UlVJffcvxoiEqYs2" Return-path: Content-Disposition: inline In-Reply-To: <20171025212806.GA21504@atomide.com> Sender: linux-kernel-owner@vger.kernel.org To: Tony Lindgren Cc: pali.rohar@gmail.com, sre@kernel.org, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com, clayton@craftyguy.net, martijn@brixit.nl, sakari.ailus@linux.intel.com, filip.matijevic.pz@gmail.com List-Id: linux-omap@vger.kernel.org --UlVJffcvxoiEqYs2 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed 2017-10-25 14:28:07, Tony Lindgren wrote: > * Pavel Machek [171025 13:36]: > > Hi! > >=20 > > ...hardware should be identical. 3.5.3-nemo kernel seems to work on > > both. 4.13-rc2 with display and clock patches boots on phone "S", but > > does not on phone "P"; nothing nothing is received on serial port. > >=20 > > There is some difference in the bootloaders: S's bootloader provides > > lots of debug info, P's is silent. R&D settings do _not_ have > > influence on bootloader. We know P's serial works, as 3.5.3 kernel > > prints "Uncompressing linux...booting" there. > >=20 > > I'll need to return "S" phone and serial cable tommorow. If you have > > any ideas, let me know. >=20 > If you get nothing out of the uart, chances are the pins are > not muxed for the uart in nolo and maybe kernel dts is missing the > pinctrl entries for uart? >=20 > Also try booting with mem=3D512M@0x80000000 or 256M or 768M. Maybe the > memory is different size or partially broken? Uhuh. It looks like "P" nokia really wants initrd, otherwise it will not boot. I got "uncompressing Linux 4.13" on serial console now, debug LEDs blinking, and if I use a flashlight, I see output on the screen, too. (What do I need to do to get the backlight working?) Best regards, Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --UlVJffcvxoiEqYs2 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlnxpzUACgkQMOfwapXb+vJvrQCgpA4ygmFicsmOCS7qBbX14ds6 tX4AnR4viiX4J5b6fLnc3ExvTs6xgLD0 =r4ZR -----END PGP SIGNATURE----- --UlVJffcvxoiEqYs2--