linux-kernel - Re: [PATCH 3/7] pinctrl: pinconf-generic: Allow driver to specify DT params

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Date:	Fri, 21 Nov 2014 09:35:31 +0200
From:	"Ivan T. Ivanov" <iivanov@...sol.com>
To:	Sören Brinkmann <soren.brinkmann@...inx.com>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Bjorn Andersson <Bjorn.Andersson@...ymobile.com>,
	Michal Simek <michal.simek@...inx.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Alessandro Rubini <rubini@...pv.it>,
	Heiko Stuebner <heiko@...ech.de>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	linux-rockchip@...ts.infradead.org,
	"linux-sh@...r.kernel.org" <linux-sh@...r.kernel.org>
Subject: Re: [PATCH 3/7] pinctrl: pinconf-generic: Allow driver to specify
 DT params


On Thu, 2014-11-20 at 08:22 -0800, Sören Brinkmann wrote:
> 
> 
> Also, I hope all my changes here don't break the current behavior. So,
> those 27 driver should still be able to do what they currently do. But I
> hope they could migrated over to use the generic bindings only in the
> longer term, so that these custom properties disappear.
> 
> > > The pinctrl driver just assembles
> > > some data structure that has the information regarding custom properties
> > > and the core handles the rest.
> > 
> > Yup, that is nice. What will be really nice if it also handle custom,
> > "function", "groups" and "pins" properties. Otherwise most of the drivers
> > will not be able to benefit from this.
> 
> Why would you still need those? 

I don't need them :-). The point was that still majority of the drivers
will have custom parsing functions. It would be nice if we could fix
that too. I do understand that using custom "pins", "functions"... is
something which is deprecated, but if core parsing functions allow
passing custom strings for above purposes, in a similar way as your
proposal, it will be easier for those drivers to migrate, I believe.

Regards,
Ivan
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