linux-kernel - Re: [PATCH] ARM: DTS: Aspeed: Add YADRO Nicole BMC

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Date:   Fri, 10 Apr 2020 17:59:04 +0300
From:   "Alexander A. Filippov" <a.filippov@...ro.com>
To:     Andrew Jeffery <andrew@...id.au>
CC:     <linux-aspeed@...ts.ozlabs.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Joel Stanley <joel@....id.au>, Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH] ARM: DTS: Aspeed: Add YADRO Nicole BMC

On Fri, Apr 10, 2020 at 02:29:47PM +0930, Andrew Jeffery wrote:
> 
> 
> > +&i2c11 {
> > +	status = "okay";
> > +};
> > +
> > +&i2c12 {
> > +	status = "okay";
> > +};
> 
> Are you accessing devices on the busses from userspace? It would
> be helpful to comment here why you're enabling all of these busses
> but not describing any devices on them, if it's necessary to enable
> them at all.
> 

Yes, some of them are unused and may be removed.
For others I'll add comments in the next version.

> > +
> > +&adc {
> > +	status = "okay";
> 
> You should specify the pinmux configuration for the channels you're using
> to ensure exclusive access to those pins (otherwise they could be exported
> e.g. as GPIOs).

It was just copied from Romulus and looks like I missed iio-hwmon-battery.
Is it what you meant?

All other pins are wired to the ground.`


Alexander