From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752068AbbAFW7A (ORCPT ); Tue, 6 Jan 2015 17:59:00 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:52697 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751803AbbAFW67 (ORCPT ); Tue, 6 Jan 2015 17:58:59 -0500 Date: Tue, 6 Jan 2015 23:58:56 +0100 From: Pavel Machek To: Aaro Koskinen Cc: Felipe Balbi , pali.rohar@gmail.com, sre@debian.org, sre@ring0.de, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org, ivo.g.dimitrov.75@gmail.com Subject: Re: 3.19 on Nokia n900: audio quality awful Message-ID: <20150106225856.GB31990@amd> References: <20150106170433.GA5408@amd> <20150106172545.GK6502@saruman> <20150106175115.GA19487@amd> <20150106202857.GB32308@saruman> <20150106205000.GB13902@amd> <20150106205730.GA6071@fuloong-minipc.musicnaut.iki.fi> <20150106220805.GD13902@amd> <20150106222717.GC6071@fuloong-minipc.musicnaut.iki.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150106222717.GC6071@fuloong-minipc.musicnaut.iki.fi> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 2015-01-07 00:27:17, Aaro Koskinen wrote: > On Tue, Jan 06, 2015 at 11:08:05PM +0100, Pavel Machek wrote: > > On Tue 2015-01-06 22:57:30, Aaro Koskinen wrote: > > > Hi, > > > > > > On Tue, Jan 06, 2015 at 09:50:00PM +0100, Pavel Machek wrote: > > > > PS: Unfortunately, N900 will not boot using nfsroot in 3.16+ at least, > > > > and boot from MMC card is broken and has been for quite some time. > > > > > > USB networking works fine with 3.19-rc3 and also MMC card rootfs. > > > > Does nfsroot work for you? USB networking works as a module but not > > build-in. [Patch is available for this one.] > > > > u-SD card seems to have similar problem. If I try it after boot, I can > > access it ok, but using u-SD card for rootfs fails. If it works for > > you, it would be interesting to know. > > I haven't tried nfsroot, but I've been using USB networking for ssh > for a couple of years without issues. I have g_ether as module. > > Also I recently switched rootfs to u-SD card, and it (MMC) works fine > as builtin. > > But I'm mounting it from userspace (using builtin initramfs inside > zImage), with a poll loop that waits for a device to appear. Maybe if you > do it from kernel you need to use root wait/delay etc. options? Yes, it works if I mount it later. It fails when done directly using root=, even with rootwait etc. Hard to believe, yes, but try it. You can watch the results on console. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html