From mboxrd@z Thu Jan  1 00:00:00 1970
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: Re: [PATCH v3 1/3] nvmem: Update the OF binding to use a subnode for
 the cells list
Date: Tue, 17 Apr 2018 16:44:01 +0100
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To: Alban <albeu@free.fr>
Cc: linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, David Woodhouse <dwmw2@infradead.org>, Brian Norris <computersforpeace@gmail.com>, Boris Brezillon <boris.brezillon@free-electrons.com>, Marek Vasut <marek.vasut@gmail.com>, Richard Weinberger <richard@nod.at>, Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>, devicetree@vger.kernel.org, linux-mtd@lists.infradead.org
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Thanks for explaining,

On 17/04/18 15:54, Alban wrote:
> This will not only allow reading the calibration data from nvmem, but
> will also create a partition on the MTD device, which is not acceptable.
> With my proposed binding this would become:
> 
> flash@0 {
> 	#address-cells = <1>;
> 	#size-cells = <1>;
> 	compatible = "s25sl064a";
> 	reg = <0>;
> 
> 	nvmem-cells {
> 		compatible = "nvmem-cells";
> 		#address-cells = <1>;
> 		#address-cells = <1>;
> 
> 		calibration: calib@404 {
> 			reg = <0x404 0x10>;
> 		};
> 	};

Why can't we make nvmem-cells node a nvmem provider in this case?
Which should work!

--srini


> };
> 
> Which would work fine as the MTD code will ignore the nvmem-cells
> subnode thanks to its compatible string.