linux-kernel - Re: [PATCH V3 1/6] dt-bindings: nvmem: layouts: add U-Boot environment variables layout

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Date: Wed, 3 Jan 2024 17:11:29 -0700
From: Rob Herring <robh@...nel.org>
To: Rafał Miłecki <zajec5@...il.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Michael Walle <michael@...le.cc>, Miquel Raynal <miquel.raynal@...tlin.com>, linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, u-boot@...ts.denx.de, Rafał Miłecki <rafal@...ecki.pl>
Subject: Re: [PATCH V3 1/6] dt-bindings: nvmem: layouts: add U-Boot
 environment variables layout

On Thu, Dec 21, 2023 at 06:34:16PM +0100, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@...ecki.pl>
> 
> U-Boot env data is a way of storing firmware variables. It's a format
> that can be used of top of various storage devices. Its binding should
> be an NVMEM layout instead of a standalone device.
> 
> This patch adds layout binding which allows using it on top of MTD NVMEM
> device as well as any other. At the same time it deprecates the old
> combined binding.

I don't understand the issue. From a DT perspective, there isn't. A 
partition is not a device, but is describing the layout of storage 
already.

Rob