From: Rob Herring <robh@kernel.org>
To: "Rafał Miłecki" <zajec5@gmail.com>
Cc: "Rob Herring" <robh+dt@kernel.org>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
"Wolfram Sang" <wsa+renesas@sang-engineering.com>,
"Jens Axboe" <axboe@kernel.dk>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Mikhail Zhilkin" <csharper2005@gmail.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Rafał Miłecki" <rafal@milecki.pl>,
"Christian Marangi" <ansuelsmth@gmail.com>,
devicetree@vger.kernel.org, "Richard Weinberger" <richard@nod.at>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Chaitanya Kulkarni" <kch@nvidia.com>,
"Miquel Raynal" <miquel.raynal@bootlin.com>
Subject: Re: [PATCH V3 1/2] dt-bindings: mtd: partitions: support marking rootfs partition
Date: Wed, 26 Oct 2022 14:41:20 -0500 [thread overview]
Message-ID: <166681327937.1046171.12755634067676619192.robh@kernel.org> (raw)
In-Reply-To: <20221022211318.32009-1-zajec5@gmail.com>
On Sat, 22 Oct 2022 23:13:17 +0200, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@milecki.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@milecki.pl>
> ---
> V2: Use "linux,rootfs" as more accurate. Thanks Rob.
> ---
> .../devicetree/bindings/mtd/partitions/fixed-partitions.yaml | 1 +
> .../devicetree/bindings/mtd/partitions/partition.yaml | 4 ++++
> 2 files changed, 5 insertions(+)
>
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2022-10-26 19:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-22 21:13 Rafał Miłecki
2022-10-22 21:13 ` [PATCH V3 2/2] mtd: core: set ROOT_DEV for partitions marked as rootfs in DT Rafał Miłecki
2022-11-07 16:21 ` Miquel Raynal
2022-10-26 19:41 ` Rob Herring [this message]
2022-11-07 16:22 ` [PATCH V3 1/2] dt-bindings: mtd: partitions: support marking rootfs partition Miquel Raynal
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