linux-kernel - Re: [PATCH V3 1/2] dt-bindings: mtd: partitions: support marking rootfs partition

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Message-Id: <20221107162212.49114-1-miquel.raynal@bootlin.com>
Date:   Mon,  7 Nov 2022 17:22:12 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Rafał Miłecki <zajec5@...il.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Mikhail Zhilkin <csharper2005@...il.com>,
        Christian Marangi <ansuelsmth@...il.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Chaitanya Kulkarni <kch@...dia.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Jens Axboe <axboe@...nel.dk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Rafał Miłecki <rafal@...ecki.pl>
Subject: Re: [PATCH V3 1/2] dt-bindings: mtd: partitions: support marking rootfs partition

On Sat, 2022-10-22 at 21:13:17 UTC, =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= wrote:
> From: Rafał Miłecki <rafal@...ecki.pl>
> 
> Linux needs to know what to use as root device. On embedded devices with
> flash the only common way to specify that is cmdline & root= parameter.
> 
> That solution works with U-Boot which is Linux & cmdline aware but isn't
> available with all market bootloaders. Also that method is fragile:
> 1. Requires specific probing order on multi-flash devices
> 2. Uses hardcoded partitions indexes
> 
> A lot of devices use different partitioning methods. It may be
> "fixed-partitions" or some dynamic partitioning (e.g. based on parts
> table). For such cases allow "linux,rootfs" property to mark correct
> flash partition.
> 
> Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
> Reviewed-by: Rob Herring <robh@...nel.org>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/next, thanks.

Miquel