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

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Message-ID: <98b110d7-f875-4bd5-98de-47641ac2134c@BN1AFFO11FD026.protection.gbl>
Date:	Tue, 31 Mar 2015 13:25:07 +0200
From:	Michal Simek <michal.simek@...inx.com>
To:	Mark Brown <broonie@...nel.org>,
	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 03/31/2015 01:16 PM, Mark Brown wrote:
> On Tue, Mar 31, 2015 at 10:16:57AM +0200, Michal Simek wrote:
>> On 03/31/2015 07:47 AM, Mark Brown wrote:
> 
>>> num-cs *is* a software setting.
> 
>> ok - what to do with that? Remove it because it shouldn't be passed via DT?
> 
> Well, there's a lot of existing users to check and clean up some of
> which currently rely on it which will take time to deal with.  Removing
> it while some drivers rely on using it isn't ideal.
> 

We have spi-cadence driver in the kernel which uses num-cs and also
is-decoded-cs and we can change it but the question still remains how
to do it better.

Thanks,
Michal
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