From: Rob Herring <robh@kernel.org>
To: Miquel Raynal <miquel.raynal@bootlin.com>
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 07:20:03 -0500 [thread overview]
Message-ID: <20260925122003.GD677989-robh@kernel.org> (raw)
In-Reply-To: <877bk9n122.fsf@bootlin.com>
On Fri, Sep 25, 2026 at 11:16:21AM +0200, Miquel Raynal wrote:
> 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.
Indeed.
> > +
> > + power-domains:
> > + maxItems: 1
>
> This one, even though we don't actively use it in Linux, it may serve a
> real purpose.
The driver core takes care of 'power-domains', so how is it not used?
Rob
next prev parent reply other threads:[~2026-09-25 12:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-22 18:31 Rob Herring (Arm)
2026-09-25 9:16 ` Miquel Raynal
2026-09-25 12:20 ` Rob Herring [this message]
2026-09-25 12:52 ` Miquel Raynal
2026-09-25 12:58 ` Michal Simek
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