linux-kernel - Re: [RFC V1] mfd: da9063: Add support for production silicon variant code

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Message-ID: <20140217233911.GB2669@sirena.org.uk>
Date:	Tue, 18 Feb 2014 08:39:11 +0900
From:	Mark Brown <broonie@...nel.org>
To:	"Opensource [Steve Twiss]" <stwiss.opensource@...semi.com>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	David Dajun Chen <david.chen@...semi.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>
Subject: Re: [RFC V1] mfd: da9063: Add support for production silicon variant
 code

On Sun, Feb 16, 2014 at 12:18:43PM +0000, Opensource [Steve Twiss] wrote:

> Some registers in the new variant make backwards compatibility easy,
> however attempting to combine the two register maps in other components
> makes the driver a mess. 

OK, that makes sense - if the changes really are substantial then
dropping the old revisions can be reasonable.

> I realise that the Linux community will have different aims however and 
> I would like to support those as much as I can.

It's not just the community here - it's just a general thing with users,
the same issues face people using out of tree drivers (though
communication with the developers is often weaker there).

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