linux-kernel - Re: [RFC 4/8] usb: phy: move TCSR driver into new file

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Date:	Fri, 20 May 2016 16:15:27 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Mark Brown <broonie@...nel.org>
Cc:	Andy Gross <andy.gross@...aro.org>,
	Felipe Balbi <balbi@...nel.org>,
	David Brown <david.brown@...aro.org>,
	Peter Chen <Peter.Chen@....com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Bjorn Andersson <bjorn.andersson@...aro.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	linux-soc@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [RFC 4/8] usb: phy: move TCSR driver into new file

On Friday 20 May 2016 13:44:14 Mark Brown wrote:
> On Fri, May 20, 2016 at 02:24:14PM +0200, Arnd Bergmann wrote:
> > On Thursday 19 May 2016 14:08:43 Andy Gross wrote:
> 
> > > I'd rather do something like what we did for the GSBI.  It needed to
> > > change some phy related bits in the TCSR as well.  We defined the TCSR
> > > as a syscon, with binding documentation under mfd.  If we add a syscon
> > > entry and use it if it is present, we can deal with that pretty
> > > easily.  The offsets change for each soc, and this would also fix that
> > > issue because we can change offset based on tcsr compat.
> 
> > Works for me, but be aware that this will break the server chips,
> > as ACPI has no support for regmap devices.
> 
> Just to be clear there's nothing precluding the use of regmap on ACPI
> devices, it's syscon it doesn't have anything for.
> 

Yes, that's what I meant.

	Arnd