linux-kernel - Re: [PATCH v12 1/3] dt-bindings: mtd: Describe MTD partitions concatenation

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Message-ID: <87r043r2lq.fsf@bootlin.com>
Date: Wed, 12 Feb 2025 09:25:53 +0100
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Rob Herring <robh@...nel.org>
Cc: Amit Kumar Mahapatra <amit.kumar-mahapatra@....com>,  richard@....at,
  vigneshr@...com,  krzk+dt@...nel.org,  conor+dt@...nel.org,
  linux-mtd@...ts.infradead.org,  devicetree@...r.kernel.org,
  linux-kernel@...r.kernel.org,  git@....com,  amitrkcian2002@...il.com
Subject: Re: [PATCH v12 1/3] dt-bindings: mtd: Describe MTD partitions
 concatenation

Hi,

>> The partitions that gets created are
>> part0_0
>> part1_1
>> part0_1-part1_0-concat
>
> 'part-concat' doesn't work if you have multiple sets of partitions you 
> want to concatenate.
>
> I think you need something like 'prev-partition' or 'next-partition' in 
> the partition nodes to create a linked list of partitions. Hopefully, 
> you don't need both properties, but you do have to scan everything to 
> figure out which ones are concatenated or not. For example, no property 
> can mean not concatenated or last partition if you use 'next-partition'. 

Out of curiosity, would the chosen node be eligible as a central place
where to look at?

Thanks,
Miquèl