linux-kernel - Re: [PATCH V2] dt-bindings: nvmem: layouts: add fixed-layout

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Date:   Thu, 09 Mar 2023 14:07:23 +0100
From:   Michael Walle <michael@...le.cc>
To:     Rafał Miłecki <zajec5@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rafał Miłecki 
        <rafal@...ecki.pl>
Subject: Re: [PATCH V2] dt-bindings: nvmem: layouts: add fixed-layout

Am 2023-03-09 12:39, schrieb Rafał Miłecki:
> From: Rafał Miłecki <rafal@...ecki.pl>
> 
> With the introduction of NVMEM layouts we should prefer and support
> describing all NVMEM devices content in the "nvmem-layout" node. That
> inludes using it for fixed NVMEM cells (those with hardcoded offset &
> size).
> 
> This seems to be cleaner design and more explicit.
> 
> Introduce a binding allowing fixed NVMEM cells as a type of layout. To
> avoid code duplication put shared part in the fixed-cell.yaml.
> 
> Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>

I don't feel comfortable to add an acked-by or reviewed-by here
because I don't do much with dt-bindings myself, but this looks
good to me.

 From a device tree binding POV, could there be a

nvmem-layout@0 {
   reg = <0>;
   compatible = "layout1";
};

nvmem-layout@...0 {
   reg = <1000>;
   compatible = "layout2";
};

for partitioned eeproms for example?

-michael