All of lore.kernel.org
 help / color / mirror / Atom feed
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: "Rob Herring (Arm)" <robh@kernel.org>
Cc: Michal Simek <michal.simek@amd.com>,
	 Richard Weinberger <richard@nod.at>,
	 Vignesh Raghavendra <vigneshr@ti.com>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	linux-mtd@lists.infradead.org,  devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dt-bindings: mtd: arasan: Add ZynqMP props
Date: Fri, 25 Sep 2026 11:16:21 +0200	[thread overview]
Message-ID: <877bk9n122.fsf@bootlin.com> (raw)
In-Reply-To: <20260922183138.290114-1-robh@kernel.org> (Rob Herring's message of "Tue, 22 Sep 2026 13:31:38 -0500")

Hi Rob,

> +  num-cs:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    minimum: 1
> +    maximum: 2

I am not sure I get what is the purpose of this property. It looks like
a downstream property resurfacing. We expect one DT subnode per chip, so
I don't see the need for num-cs, we just need to count the children
nodes. For me, the correct fix is to drop num-cs from the upstream DT.
The only real use for it would be if the hardware could be synthesized
differently, with a single CS instead of 2, but I don't think it's the
case here.

> +
> +  power-domains:
> +    maxItems: 1

This one, even though we don't actively use it in Linux, it may serve a
real purpose.

Thanks,
Miquèl

WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: "Rob Herring (Arm)" <robh@kernel.org>
Cc: Michal Simek <michal.simek@amd.com>,
	 Richard Weinberger <richard@nod.at>,
	 Vignesh Raghavendra <vigneshr@ti.com>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	linux-mtd@lists.infradead.org,  devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dt-bindings: mtd: arasan: Add ZynqMP props
Date: Fri, 25 Sep 2026 11:16:21 +0200	[thread overview]
Message-ID: <877bk9n122.fsf@bootlin.com> (raw)
In-Reply-To: <20260922183138.290114-1-robh@kernel.org> (Rob Herring's message of "Tue, 22 Sep 2026 13:31:38 -0500")

Hi Rob,

> +  num-cs:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    minimum: 1
> +    maximum: 2

I am not sure I get what is the purpose of this property. It looks like
a downstream property resurfacing. We expect one DT subnode per chip, so
I don't see the need for num-cs, we just need to count the children
nodes. For me, the correct fix is to drop num-cs from the upstream DT.
The only real use for it would be if the hardware could be synthesized
differently, with a single CS instead of 2, but I don't think it's the
case here.

> +
> +  power-domains:
> +    maxItems: 1

This one, even though we don't actively use it in Linux, it may serve a
real purpose.

Thanks,
Miquèl

______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

  reply	other threads:[~2026-09-25  9:16 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-22 18:31 [PATCH] dt-bindings: mtd: arasan: Add ZynqMP props Rob Herring (Arm)
2026-09-22 18:31 ` Rob Herring (Arm)
2026-09-25  9:16 ` Miquel Raynal [this message]
2026-09-25  9:16   ` Miquel Raynal
2026-09-25 12:20   ` Rob Herring
2026-09-25 12:20     ` Rob Herring
2026-09-25 12:52     ` Miquel Raynal
2026-09-25 12:52       ` Miquel Raynal
2026-09-25 12:58       ` Michal Simek
2026-09-25 12:58         ` Michal Simek

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=877bk9n122.fsf@bootlin.com \
    --to=miquel.raynal@bootlin.com \
    --cc=conor+dt@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=krzk+dt@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mtd@lists.infradead.org \
    --cc=michal.simek@amd.com \
    --cc=richard@nod.at \
    --cc=robh@kernel.org \
    --cc=vigneshr@ti.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.