linux-kernel - Re: [PATCH 2/2] arm: mvebu: adding SATA support: dt binding and config update

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Message-ID: <20121025152114.73e69c92@skate>
Date:	Thu, 25 Oct 2012 15:21:14 +0200
From:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:	Jason Cooper <jason@...edaemon.net>
Cc:	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Andrew Lunn <andrew@...n.ch>,
	linux-arm-kernel@...ts.infradead.org,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	Ben Dooks <ben-linux@...ff.org>,
	Ian Molton <ian.molton@...ethink.co.uk>,
	Nicolas Pitre <nico@...xnic.net>,
	Lior Amsalem <alior@...vell.com>,
	Maen Suleiman <maen@...vell.com>,
	Tawfik Bayouk <tawfik@...vell.com>,
	Shadi Ammouri <shadi@...vell.com>,
	Eran Ben-Avi <benavi@...vell.com>,
	Yehuda Yitschak <yehuday@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>,
	Ike Pan <ike.pan@...onical.com>,
	Jani Monoses <jani.monoses@...onical.com>,
	Chris Van Hoof <vanhoof@...onical.com>,
	Dan Frazier <dann.frazier@...onical.com>,
	Leif Lindholm <leif.lindholm@....com>,
	Jon Masters <jcm@...hat.com>,
	David Marlin <dmarlin@...hat.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] arm: mvebu: adding SATA support: dt binding and
 config update

Jason,

On Thu, 25 Oct 2012 09:18:18 -0400, Jason Cooper wrote:

> > Jason, Andrew, do you want I split this patch as suggested by
> > Thomas or are you fine with having one single patch?
> 
> Yes, please make the defconfig changes a separate patch.  Also, please
> make sure only the minimum is enabled (eq RAID... isn't needed).

I haven't looked in details at the driver, but is nr-ports = <foo> the
right way of doing things? We may have platforms were port 0 is not
used, but port 1 is used, and just a number of ports doesn't allow to
express this.

Shouldn't the DT property be

  ports = <0>, <1>
  ports = <1>
  ports = <1>, <3>

In order to allow to more precisely enabled SATA ports? Or maybe the
SATA ports cannot be enabled/disabled on a per-port basis, in which
case I'm obviously wrong here.

Best regards,

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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