linux-kernel - Re: [PATCH 3/5] dt-bindings: nvmem: allow referencing device defined cells by names

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Message-ID: <YdSrG3EGDHMmhm1Y@robh.at.kernel.org>
Date:   Tue, 4 Jan 2022 14:16:27 -0600
From:   Rob Herring <robh@...nel.org>
To:     Rafał Miłecki <zajec5@...il.com>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        Rafał Miłecki <rafal@...ecki.pl>
Subject: Re: [PATCH 3/5] dt-bindings: nvmem: allow referencing device defined
 cells by names

On Thu, Dec 23, 2021 at 10:58:56PM +0100, Rafał Miłecki wrote:
> On 23.12.2021 22:18, Rob Herring wrote:
> > On Thu, Dec 23, 2021 at 7:08 AM Rafał Miłecki <zajec5@...il.com> wrote:
> > > 
> > > From: Rafał Miłecki <rafal@...ecki.pl>
> > > 
> > > Not every NVMEM has predefined cells at hardcoded addresses. Some
> > > devices store cells in internal structs and custom formats. Referencing
> > > such cells is still required to let other bindings use them.
> > > 
> > > Modify binding to require "reg" xor "label". The later one can be used
> > > to match "dynamic" NVMEM cells by their names.
> > 
> > 'label' is supposed to correspond to a sticker on a port or something
> > human identifiable. It generally should be something optional to
> > making the OS functional. Yes, there are already some abuses of that,
> > but this case is too far for me.
> 
> Good to learn that!
> 
> "name" is special & not allowed I think.

It's the node name essentially. Why is using node names not sufficient? 
Do you have some specific examples?

Rob