linux-kernel - Re: [PATCH REBASE] i2c-designware: make SDA hold time configurable

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Message-ID: <20130610152954.GE2987@katana>
Date:	Mon, 10 Jun 2013 17:29:55 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Christian Ruppert <christian.ruppert@...lis.com>
Cc:	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	linux-i2c@...r.kernel.org,
	"Ben Dooks (embedded platforms)" <ben-linux@...ff.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	devicetree-discuss@...ts.ozlabs.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>,
	Pierrick Hascoet <pierrick.hascoet@...lis.com>
Subject: Re: [PATCH REBASE] i2c-designware: make SDA hold time configurable

On Tue, May 14, 2013 at 03:04:02PM +0200, Christian Ruppert wrote:
> This patch makes the SDA hold time configurable through device tree.
> 
> [rebased to i2c-current/i2c-next/mainline-3.10-rc1]
> 
> Signed-off-by: Christian Ruppert <christian.ruppert@...lis.com>
> Signed-off-by: Pierrick Hascoet <pierrick.hascoet@...lis.com>

Hmm, I really have problems adding a generic property. I need to better
understand why this is needed? What is the usecase? Can't a safe value
be calculated depending on the bus-speed? Is there a public datasheet
available somewhere?

Thanks,

   Wolfram


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