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Message-ID: <ZegZ0zJ1OT7ikrE8@pengutronix.de>
Date: Wed, 6 Mar 2024 08:22:59 +0100
From: Sascha Hauer <s.hauer@...gutronix.de>
To: Daniel Golle <daniel@...rotopia.org>
Cc: Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
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Dave Chinner <dchinner@...hat.com>, Jan Kara <jack@...e.cz>,
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Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-mmc@...r.kernel.org, linux-block@...r.kernel.org,
Diping Zhang <diping.zhang@...inet.com>,
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Subject: Re: [RFC PATCH v2 1/8] dt-bindings: block: add basic bindings for
block devices
Hi Daniel,
On Tue, Mar 05, 2024 at 08:23:20PM +0000, Daniel Golle wrote:
> diff --git a/Documentation/devicetree/bindings/block/partition.yaml b/Documentation/devicetree/bindings/block/partition.yaml
> new file mode 100644
> index 0000000000000..df561dd33cbc9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/block/partition.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/block/partition.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Partition on a block device
> +
> +description: |
> + This binding describes a partition on a block storage device.
> + Partitions may be matched by a combination of partition number, name,
> + and UUID.
> +
> +maintainers:
> + - Daniel Golle <daniel@...rotopia.org>
> +
> +properties:
> + $nodename:
> + pattern: '^block-partition-.+$'
> +
> + partnum:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + Matches partition by number if present.
> +
> + partname:
> + $ref: /schemas/types.yaml#/definitions/string
> + description:
> + Matches partition by PARTNAME if present.
In the mtd world we originally had the partition nodes directly under
the hardware device node as well. That was changed to put a
partitions subnode between the hardware device node and the partitions.
>From fe2585e9c29a ("doc: dt: mtd: support partitions in a special
'partitions' subnode"):
To avoid conflict with other drivers using subnodes of the mtd device
create only one ofpart-specific node rather than any number of
arbitrary partition subnodes.
Does it make sense to do the same for block devices?
Sascha
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