linux-kernel - Re: 3.19 on Nokia n900: audio quality awful

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Message-ID: <20150106220805.GD13902@amd>
Date:	Tue, 6 Jan 2015 23:08:05 +0100
From:	Pavel Machek <pavel@....cz>
To:	Aaro Koskinen <aaro.koskinen@....fi>
Cc:	Felipe Balbi <balbi@...com>, pali.rohar@...il.com, sre@...ian.org,
	sre@...g0.de, kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-omap@...r.kernel.org, tony@...mide.com, khilman@...nel.org,
	ivo.g.dimitrov.75@...il.com
Subject: Re: 3.19 on Nokia n900: audio quality awful

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'm loading zImage using 0xffff directly from the PC.

For the audio: this should do the trick:


root@...0:~# uname -a
Linux n900 3.18.0-omap3-69644-g0ed746d #837 PREEMPT Sun Jan 4 22:30:24
CET 2015 armv7l GNU/Linux
root@...0:~# alsactl init
Found hardware: "RX-51" "" "" "" ""
Hardware is initialized using a generic method
root@...0:~# cat /etc/debian_version
7.7
root@...0:~# mplayer /my2/*

(audio actually works).

I do have Pali's n900 changes applied. I guess I should try without
them. Let me know if .config would help you.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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