No subject
Robert Schwebel
r.schwebel at pengutronix.de
Fri Oct 5 00:15:59 PDT 2012
<tomi.valkeinen at ti.com>, pza
Bcc:
Subject: Re: [PATCH 1/2 v6] of: add helper to parse display timings
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In-Reply-To: <Pine.LNX.4.64.1210042307300.3744 at axis700.grange>
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On Thu, Oct 04, 2012 at 11:35:35PM +0200, Guennadi Liakhovetski wrote:
> > +optional properties:
> > + - hsync-active-high (bool): Hsync pulse is active high
> > + - vsync-active-high (bool): Vsync pulse is active high
>
> For the above two we also considered using bool properties but eventually
> settled down with integer ones:
>
> - hsync-active = <1>
>
> for active-high and 0 for active low. This has the added advantage of
> being able to omit this property in the .dts, which then doesn't mean,
> that the polarity is active low, but rather, that the hsync line is not
> used on this hardware. So, maybe it would be good to use the same binding
> here too?
Philipp, this is the same argumentation as we discussed yesterday for
the dual-link LVDS option, so that one could be modelled in a similar
way.
rsc
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