linux-kernel - Re: wl1251 & mac address & calibration data

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Message-ID: <20170112085033.GA27429@amd>
Date:   Thu, 12 Jan 2017 09:50:33 +0100
From:   Pavel Machek <pavel@....cz>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     Arend Van Spriel <arend.vanspriel@...adcom.com>,
        Pali Rohár <pali.rohar@...il.com>,
        Daniel Wagner <wagi@...om.org>,
        "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Tom Gundersen <teg@...m.no>,
        Johannes Berg <johannes@...solutions.net>,
        Ming Lei <ming.lei@...onical.com>,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rafał Miłecki <zajec5@...il.com>,
        Sebastian Reichel <sre@...nel.org>,
        Michal Kazior <michal.kazior@...to.com>,
        Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        Tony Lindgren <tony@...mide.com>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Takashi Iwai <tiwai@...e.de>,
        Josh Boyer <jwboyer@...oraproject.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: Re: wl1251 & mac address & calibration data

Hi!

> >> But overwriting that one file is not possible as it next update of 
> >> linux-firmware package will overwrite it back. It break any normal usage 
> >> of package management.
> >> 
> >> Also it is ridiculously broken by design if some "boot" files needs to 
> >> be overwritten to initialize hardware properly. To not break booting you 
> >> need to overwrite that file before first boot. But without booting 
> >> device you cannot read calibration data. So some hack with autoreboot 
> >> after boot is needed.
> 
> Providing the calibration data via Device Tree is the proper way to
> solve this. Yes yes, I know N900 doesn't support it but that's a
> deficiency in N900, not Linux.

Linux has to work with whatever hardware provides. You may not like
N900 design, but we have to support it, anyway.

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

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