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Date:   Wed, 31 Aug 2022 16:48:09 -0500
From:   Rob Herring <robh@kernel.org>
To:     Michael Walle <michael@walle.cc>
Cc:     Miquel Raynal <miquel.raynal@bootlin.com>,
        Richard Weinberger <richard@nod.at>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        Shawn Guo <shawnguo@kernel.org>, Li Yang <leoyang.li@nxp.com>,
        =?utf-8?B?UmFmYcWCIE1pxYJlY2tp?= <rafal@milecki.pl>,
        "David S . Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Frank Rowand <frowand.list@gmail.com>,
        linux-mtd@lists.infradead.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        netdev@vger.kernel.org, Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: Re: [PATCH v1 08/14] dt-bindings: mtd: relax the nvmem compatible
 string
Message-ID: <20220831214809.GA282739-robh@kernel.org>
References: <20220825214423.903672-1-michael@walle.cc>
 <20220825214423.903672-9-michael@walle.cc>
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On Thu, Aug 25, 2022 at 11:44:17PM +0200, Michael Walle wrote:
> The "user-otp" and "factory-otp" compatible string just depicts a
> generic NVMEM device. But an actual device tree node might as well
> contain a more specific compatible string. Make it possible to add
> more specific binding elsewere and just match part of the compatibles
> here.
> 
> Signed-off-by: Michael Walle <michael@walle.cc>
> ---
>  Documentation/devicetree/bindings/mtd/mtd.yaml | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

In hindsight it looks like we are mixing 2 different purposes of 'which 
instance is this' and 'what is this'. 'compatible' is supposed to be the 
latter.

Maybe there's a better way to handle user/factory? There's a similar 
need with partitions for A/B or factory/update.

Rob