Re: [RFC PATCH v2 1/8] dt-bindings: block: add basic bindings for block devices

[Sascha Hauer <s.hauer@pengutronix.de>]

On Wed, Mar 06, 2024 at 08:22:59AM +0100, Sascha Hauer wrote:
> 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@makrotopia.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?

Hm, looking at the example in 5/8 it seems you've already done that. I
think I have misread the binding.

Sascha


-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |