linux-kernel - Re: [PATCH v9 1/2] dt-bindings: mtd: fixed-partitions: Add alignment properties

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Date: Thu, 21 Mar 2024 08:39:05 -0500
From: Rob Herring <robh@...nel.org>
To: Simon Glass <sjg@...omium.org>
Cc: devicetree@...r.kernel.org, linux-mtd@...ts.infradead.org,
	Michael Walle <mwalle@...nel.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Rafał Miłecki <rafal@...ecki.pl>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 1/2] dt-bindings: mtd: fixed-partitions: Add alignment
 properties

On Wed, Mar 20, 2024 at 06:24:48PM +1300, Simon Glass wrote:
> Add three properties for controlling alignment of partitions, aka
> 'entries' in fixed-partition.
> 
> For now there is no explicit mention of hierarchy, so a 'section' is
> just the 'fixed-partitions' node.
> 
> These new properties are inputs to the Binman packaging process, but are
> also needed if the firmware is repacked, to ensure that alignment
> constraints are not violated. Therefore they are provided as part of
> the schema.
> 
> Signed-off-by: Simon Glass <sjg@...omium.org>
> ---
> 
> Changes in v9:
> - Move binding example to next batch to avoid build error
> 
> Changes in v7:
> - Drop patch 'Add binman compatible'
> - Put the alignment properties into the fixed-partition binding
> 
> Changes in v6:
> - Correct schema-validation errors missed due to older dt-schema
>   (enum fix and reg addition)
> 
> Changes in v5:
> - Add value ranges
> - Consistently mention alignment must be power-of-2
> - Mention that alignment refers to bytes
> 
> Changes in v2:
> - Fix 'a' typo in commit message
> 
>  .../bindings/mtd/partitions/partition.yaml    | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mtd/partitions/partition.yaml b/Documentation/devicetree/bindings/mtd/partitions/partition.yaml
> index 1ebe9e2347ea..39c7d7672783 100644
> --- a/Documentation/devicetree/bindings/mtd/partitions/partition.yaml
> +++ b/Documentation/devicetree/bindings/mtd/partitions/partition.yaml
> @@ -57,6 +57,57 @@ properties:
>        user space from
>      type: boolean
>  
> +  align:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    minimum: 1

Shouldn't this and the others be 2?

Otherwise,

Reviewed-by: Rob Herring <robh@...nel.org>