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

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Date:   Thu, 16 Apr 2020 13:26:50 +0930
From:   "Andrew Jeffery" <andrew@...id.au>
To:     "Alexander A. Filippov" <a.filippov@...ro.com>
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 Sat, 11 Apr 2020, at 00:29, Alexander A. Filippov wrote:
> 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?

The Romulus devicetree may need to be fixed too :)

Andrew