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From: Mark Brown <broonie@kernel.org>
To: Chuanhong Guo <gch981213@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Rob Herring <robh@kernel.org>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>, Richard Weinberger <richard@nod.at>,
	open list <linux-kernel@vger.kernel.org>,
	linux-spi@vger.kernel.org, linux-mediatek@lists.infradead.org,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	linux-mtd@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 0/2] rewrite mtk-quadspi spi-nor driver with spi-mem
Date: Wed, 26 Feb 2020 11:36:10 +0000
Message-ID: <20200226113610.GD4136@sirena.org.uk> (raw)
In-Reply-To: <CAJsYDVKqcd-ytLLf5zKqs8DfjPAa5ELCX53OiPDAi-tDnLd=Eg@mail.gmail.com>

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On Wed, Feb 26, 2020 at 09:31:33AM +0800, Chuanhong Guo wrote:
> On Wed, Feb 26, 2020 at 1:31 AM Rob Herring <robh@kernel.org> wrote:

> > You should should really only need 'spi-max-frequency' if the max freq
> > is less than the minimum of the host and device max freq.

> But current spi framework forces that a "spi-max-frequency" property
> is present. [0]
> Should we patch spi framework then?

That's one option, yes.  As far as I can tell the bindings have always
required an explicit frequency specified in the bindings but I've no
idea why.

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Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-15  6:58 Chuanhong Guo
2020-02-15  6:58 ` [PATCH 1/2] spi: add support for mediatek spi-nor controller Chuanhong Guo
2020-02-15  6:58 ` [PATCH 2/2] dt-bindings: convert mtk-quadspi binding doc for spi-mtk-nor Chuanhong Guo
2020-02-18 12:55 ` [PATCH 0/2] rewrite mtk-quadspi spi-nor driver with spi-mem Mark Brown
2020-02-19 23:58   ` Chuanhong Guo
2020-02-20 19:51     ` Mark Brown
2020-02-25 17:31     ` Rob Herring
2020-02-26  1:31       ` Chuanhong Guo
2020-02-26 11:36         ` Mark Brown [this message]

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