linux-kernel - Re: [PATCH v3 2/6] nvme: assign of

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Message-ID: <20240806124312.GB10156@lst.de>
Date: Tue, 6 Aug 2024 14:43:12 +0200
From: Christoph Hellwig <hch@....de>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Ulf Hansson <ulf.hansson@...aro.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Joern Engel <joern@...ybastard.org>,
	Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...nel.dk>,
	Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
	linux-nvme@...ts.infradead.org
Subject: Re: [PATCH v3 2/6] nvme: assign of_node to nvme device

On Tue, Aug 06, 2024 at 01:41:12PM +0200, Christian Marangi wrote:
> Introduce support for a dedicated node for a nvme card. This will be a
> subnode of the nvme controller node that will have the "nvme-card"
> compatible.
> 
> This follow a similar implementation done for mmc where the specific mmc
> card have a dedicated of_node.
> 
> This can be used for scenario where block2mtd module is used to declare
> partition in DT and block2mtd is called on the root block of the nvme
> card, permitting the usage of fixed-partition parser or alternative
> ones.

Err, hell no.  Why would you wire up a purely PCIe device to OF?
PCIe is self-discovering.