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From:   Steve Twiss <stwiss.opensource@diasemi.com>
To:     Wolfram Sang <wsa@the-dreams.de>
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Subject: RE: [PATCH] mfd: da9063: occupy second I2C address, too
Thread-Topic: [PATCH] mfd: da9063: occupy second I2C address, too
Thread-Index: AQHVJ0mFTYYovliAiEq8ojZ9DyPua6aly35Q
Date:   Fri, 21 Jun 2019 09:23:44 +0000
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References: <AM6PR10MB218184C8F2206024C6CB77EAFEE40@AM6PR10MB2181.EURPRD10.PROD.OUTLOOK.COM>
 <20190620092116.y7aqun6jjjn4mgow@katana>
In-Reply-To: <20190620092116.y7aqun6jjjn4mgow@katana>
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Hi Wolfram,

On 20 June 2019 10:21, Wolfram Sang wrote:
> Subject: Re: [PATCH] mfd: da9063: occupy second I2C address, too
>=20
> > Is this a safety clause? What I mean is, shouldn't the hardware design =
make
> > sure there are not two devices located on the same I2C bus with the sam=
e slave
> > address?
>=20
> It is more about preventing userspace to accidently access this address,
> and thus the registers behind it.

For what it's worth, maybe consider adding a dev_warn attached to the retur=
n
of devm_i2c_new_dummy_device?

Regards,
Steve

My apologies again for accidentally splitting your original e-mail thread o=
n this:
- https://lore.kernel.org/lkml/20190619171806.30116-1-wsa+renesas@sang-engi=
neering.com/