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SubjectRe: [LINUX PATCH v10 1/2] dt-bindings: mtd: arasan: Add device tree binding documentation
On Tue, 21 Aug 2018 09:22:07 +0000
Naga Sureshkumar Relli <nagasure@xilinx.com> wrote:

> Hi Boris,
>
> > -----Original Message-----
> > From: Boris Brezillon [mailto:boris.brezillon@bootlin.com]
> > Sent: Tuesday, August 21, 2018 11:30 AM
> > To: Naga Sureshkumar Relli <nagasure@xilinx.com>
> > Cc: miquel.raynal@bootlin.com; richard@nod.at; dwmw2@infradead.org;
> > computersforpeace@gmail.com; marek.vasut@gmail.com; kyungmin.park@samsung.com;
> > absahu@codeaurora.org; peterpandong@micron.com; frieder.schrempf@exceet.de; linux-
> > mtd@lists.infradead.org; linux-kernel@vger.kernel.org; Michal Simek <michals@xilinx.com>;
> > nagasureshkumarrelli@gmail.com
> > Subject: Re: [LINUX PATCH v10 1/2] dt-bindings: mtd: arasan: Add device tree binding
> > documentation
> >
> > On Tue, 21 Aug 2018 05:47:18 +0000
> > Naga Sureshkumar Relli <nagasure@xilinx.com> wrote:
> >
> > > > > +Required properties:
> > > > > +- compatible: Should be "xlnx,zynqmp-nand" or "arasan,nfc-v3p10"
> > > >
> > > > In your example it's not an "or" since both are defined.
> > > In our previous discussion
> > > (https://lore.kernel.org/patchwork/patch/748901/)
> > > We decided to have compatible strings like " compatible = "<soc-vendor>,<ip-revision>",
> > "arasan,<ip-revision>";"
> > > So it should be either of these.
> > > so I will write something like below
> > > "Possible values are "xlnx,zynqmp-nand"
> > > "arasan,nfc-v3p10"
> > > And in example I will mention any one compatible.
> > > Is it ok?
> >
> > Hm, why do you need arasan,nfc-v3p10 at all if it's supposed to be overloaded by a soc specific
> > compat?
> Actually we put these compatible strings based on the comments on v7 series.
> Anyway I will just keep "xlnx,zynqmp-nand" as compatible.

If Rob said you should have both, then keep both, but the description
should match, because "arasan,nfc-v3p10" cannot be used alone, it has
to be placed next to a "<vendor>,nfc-<soc>" string.

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