linux-kernel - Re: [PATCH] spi: xilinx: Use standard num-cs binding

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Message-ID: <20150308190012.GV28806@sirena.org.uk>
Date:	Sun, 8 Mar 2015 19:00:12 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Michal Simek <michal.simek@...inx.com>
Cc:	linux-kernel@...r.kernel.org, monstr@...str.eu,
	Sören Brinkmann <soren.brinkmann@...inx.com>,
	linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] spi: xilinx: Use standard num-cs binding

On Fri, Jan 16, 2015 at 01:55:14PM +0100, Michal Simek wrote:
> Use standard num-cs binding property and setup
> "xlnx,num-ss-bits" as deprecated.

Why?  These properties mean different things - num-cs is a bit confused
and is the total number of available chip selects for the system (which
could include GPIOs) while num-ss-bits is the size of the bitfield
(which could include things not actually mapped out properly/successfully 
or something if the hardware designers were feeling particularly inspired).

I'm not convinced num-cs ever made any sense.

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