linux-kernel - Re: [PATCH v2 1/2] dt-bindings: i2c: add property to avoid device detection

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Message-ID: <20220414085539.GA7392@axis.com>
Date:   Thu, 14 Apr 2022 10:55:40 +0200
From:   Vincent Whitchurch <vincent.whitchurch@...s.com>
To:     Rob Herring <robh@...nel.org>
CC:     "wsa@...nel.org" <wsa@...nel.org>, kernel <kernel@...s.com>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "krzk+dt@...nel.org" <krzk+dt@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] dt-bindings: i2c: add property to avoid device
 detection

On Tue, Apr 12, 2022 at 11:22:41PM +0200, Rob Herring wrote:
> On Tue, Apr 12, 2022 at 10:50:45AM +0200, Vincent Whitchurch wrote:
> > diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
> > index fc3dd7ec0445..960d1d5c9362 100644
> > --- a/Documentation/devicetree/bindings/i2c/i2c.txt
> > +++ b/Documentation/devicetree/bindings/i2c/i2c.txt
> > @@ -72,6 +72,10 @@ wants to support one of the below features, it should adapt these bindings.
> >  	this information to adapt power management to keep the arbitration awake
> >  	all the time, for example. Can not be combined with 'single-master'.
> >  
> > +- no-detect
> > +	states that no other devices are present on this bus other than the
> > +	ones listed in the devicetree.
> 
> This belongs in the schema instead:
> 
> https://github.com/devicetree-org/dt-schema/blob/main/dtschema/schemas/i2c/i2c-controller.yaml

OK, thank you, I've sent a PR[0] now, but I must admit I don't quite
understand how this property differs from the other ones in this file
which aren't documented there.

[0] https://github.com/devicetree-org/dt-schema/pull/72