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From: Mark Brown <broonie@kernel.org>
To: Chuanhong Guo <gch981213@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Richard Weinberger <richard@nod.at>,
	open list <linux-kernel@vger.kernel.org>,
	linux-spi@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
	linux-mtd@lists.infradead.org,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 0/2] rewrite mtk-quadspi spi-nor driver with spi-mem
Date: Thu, 20 Feb 2020 19:51:22 +0000
Message-ID: <20200220195122.GL3926@sirena.org.uk> (raw)
In-Reply-To: <CAJsYDVL03KJv7eewGekBPCfpbOuTX0tJ6qZaydvJnBDzZ5vEwg@mail.gmail.com>

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On Thu, Feb 20, 2020 at 07:58:06AM +0800, Chuanhong Guo wrote:
> On Tue, Feb 18, 2020 at 8:55 PM Mark Brown <broonie@kernel.org> wrote:

> > This is an ABI break so you shouldn't be doing this, if the existing
> > binding works it should continue to work.

> The missing spi-max-frequency is the only part preventing old
> device tree to work with this driver.
> If the goal is to make existing dt binding work, I could patch dt using
> of_add_property in v2. I saw similar device tree patching for legacy
> bindings in pinctrl-single driver.

That's fine I think, so long as old DTs continue to work.

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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 [this message]
2020-02-25 17:31     ` Rob Herring
2020-02-26  1:31       ` Chuanhong Guo
2020-02-26 11:36         ` Mark Brown

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