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Date:   Tue, 21 Aug 2018 07:07:34 +0200
From:   Boris Brezillon <boris.brezillon@bootlin.com>
To:     Alban <albeu@free.fr>,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        Rob Herring <robh@kernel.org>
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        Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: Re: [PATCH v2 06/29] mtd: Add support for reading MTD devices via
 the nvmem API
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On Mon, 20 Aug 2018 23:27:48 +0200
Alban <albeu@free.fr> wrote:

> On Mon, 20 Aug 2018 20:20:38 +0200
> Boris Brezillon <boris.brezillon@bootlin.com> wrote:
> 
> > On Mon, 20 Aug 2018 11:43:34 +0100
> > Srinivas Kandagatla <srinivas.kandagatla@linaro.org> wrote:
> >   
> > > 
> > > Overall am still not able to clear visualize on how MTD bindings with 
> > > nvmem cells would look in both partition and un-partition usecases?
> > > An example DT would be nice here!!    
> > 
> > Something along those lines:  
> 
> We must also have a compatible string on the nvmem-cells node to make
> sure we don't clash with the old style MTD partitions,

That's not possible, because we don't have a reg prop in the
nvmem-cells node.

> or some other
> device specific binding.

This one might happen.

Was Rob okay with this compatible? If he was, I guess we can go for
this binding. Srinivas, any objection?

> 
> > 
> > 	mtdnode {
> > 		nvmem-cells {  
>                         compatible = "nvmem-cells";
> > 			#address-cells = <1>;
> > 			#size-cells = <1>;
> > 
> > 			cell@0 {
> > 				reg = <0x0 0x14>;
> > 			};
> > 		};
> > 
> > 		partitions {
> > 			compatible = "fixed-partitions";
> > 			#address-cells = <1>;
> > 			#size-cells = <1>;
> > 
> > 			partition@0 {
> > 				reg = <0x0 0x20000>;
> > 
> > 				nvmem-cells {  
>                                         compatible = "nvmem-cells";
> > 					#address-cells = <1>;
> > 					#size-cells = <1>;
> > 
> > 					cell@0 {
> > 						reg = <0x0 0x10>;
> > 					};
> > 				};
> > 			};
> > 		};
> > 	};  
> 
> 
> Alban