linux-kernel - Re: [PATCH v4] dt-bindings: iio: accel: add binding documentation for ADIS16240

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Message-ID: <20191204111231.GO1998@sirena.org.uk>
Date:   Wed, 4 Dec 2019 11:12:31 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        "Ardelean, Alexandru" <alexandru.Ardelean@...log.com>,
        "rodrigorsdc@...il.com" <rodrigorsdc@...il.com>,
        "Popa, Stefan Serban" <StefanSerban.Popa@...log.com>,
        "kernel-usp@...glegroups.com" <kernel-usp@...glegroups.com>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "lars@...afoo.de" <lars@...afoo.de>,
        "pmeerw@...erw.net" <pmeerw@...erw.net>,
        "Hennerich, Michael" <Michael.Hennerich@...log.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "knaack.h@....de" <knaack.h@....de>
Subject: Re: [PATCH v4] dt-bindings: iio: accel: add binding documentation
 for ADIS16240

On Tue, Dec 03, 2019 at 04:51:54PM +0000, Jonathan Cameron wrote:

> If the driver picks a mode because that's what it says on the datasheet
> it prevents odd board configurations from working.  The question
> becomes whether it makes sense in general to assume those odd board
> conditions don't exist until we actually have one, or to assume that
> they might and push the burden on to all DT files.

The cost should be for the weird boards, not everything.  If you
just wire up a device with a normally connected SPI bus without
throwing random inverters or whatever into the system then you
shouldn't need to do anything special.

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