linux-kernel - Re: [PATCH] Documentation: dt: bindings: TI WiLink modules

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Date:	Tue, 25 Jun 2013 16:07:49 +0300
From:	Felipe Balbi <balbi@...com>
To:	Luciano Coelho <coelho@...com>
CC:	<balbi@...com>, <grant.likely@...aro.org>,
	<rob.herring@...xeda.com>, <devicetree-discuss@...ts.ozlabs.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-wireless@...r.kernel.org>, <tony@...mide.com>,
	<linux-omap@...r.kernel.org>, <linux-arm@...r.kernel.org>
Subject: Re: [PATCH] Documentation: dt: bindings: TI WiLink modules

On Tue, Jun 25, 2013 at 02:56:10PM +0300, Luciano Coelho wrote:
> On Tue, 2013-06-25 at 14:12 +0300, Felipe Balbi wrote:
> > On Tue, Jun 25, 2013 at 11:35:30AM +0300, Luciano Coelho wrote:
> > > +- tcxoclock: the internal WLAN TCXO clock frequency (required for
> > > +  WiLink7 not used for WiLink6 and WiLink8).  Must be one of the
> > > +  following:
> > > +	0 = 19.200 MHz
> > > +	1 = 26.000 MHz
> > > +	2 = 38.400 MHz
> > > +	3 = 52.000 MHz
> > > +	4 = 16.368 MHz
> > > +	5 = 32.736 MHz
> > > +	6 = 16.800 MHz
> > > +	7 = 33.600 MHz
> > 
> > DTS files are pre-processed, so you could add defines in a header and
> > share the header between DTS and driver. Could help you having:
> > 
> > tcxoclock = WILINK_19_200MHz;
> > 
> > instead of
> > 
> > tcxoclock = 0;
> 
> I don't see any .dts file really doing this.  There are some imx*.dtsi
> files that include imx*.h files, but I don't see these headers being
> included in any source code file.
> 
> In fact, we already have all these values defined in
> include/linux/wl12xx.h, so it could be nice to reuse.  But the
> cross-directory includes would look "funny".  And I think it's a bit
> overkill.
> 
> These values are actually used by the firmware itself, not only the
> driver, so they are also platform independent and not related to the OS.

fair enough, then there's no chance they'll change all of a sudden.

-- 
balbi

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