linux-kernel - Re: [PATCH 3/5] ARM: sun8i: dt: Add DT bindings documentation for Allwinner sun8i-emac

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Date:	Wed, 8 Jun 2016 14:11:33 -0500
From:	Rob Herring <robh@...nel.org>
To:	Corentin LABBE <clabbe.montjoie@...il.com>
Cc:	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	maxime.ripard@...e-electrons.com, wens@...e.org,
	linux@...linux.org.uk, davem@...emloft.net, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: Re: [PATCH 3/5] ARM: sun8i: dt: Add DT bindings documentation for
 Allwinner sun8i-emac

On Mon, Jun 06, 2016 at 08:10:54PM +0200, Corentin LABBE wrote:
> Le 06/06/2016 16:14, Rob Herring a écrit :
> > On Fri, Jun 03, 2016 at 11:56:28AM +0200, LABBE Corentin wrote:
> >> This patch adds documentation for Device-Tree bindings for the
> >> Allwinner sun8i-emac driver.
> >>
> >> Signed-off-by: LABBE Corentin <clabbe.montjoie@...il.com>
> >> ---
> >>  .../bindings/net/allwinner,sun8i-emac.txt          | 64 ++++++++++++++++++++++
> >>  1 file changed, 64 insertions(+)
> >>  create mode 100644 Documentation/devicetree/bindings/net/allwinner,sun8i-emac.txt
> >>
> >> diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-emac.txt b/Documentation/devicetree/bindings/net/allwinner,sun8i-emac.txt
> >> new file mode 100644
> >> index 0000000..cf71a71
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-emac.txt
> >> @@ -0,0 +1,64 @@
> >> +* Allwinner sun8i EMAC ethernet controller
> >> +
> >> +Required properties:
> >> +- compatible: "allwinner,sun8i-a83t-emac", "allwinner,sun8i-h3-emac",
> >> +		or "allwinner,sun50i-a64-emac"
> >> +- reg: address and length of the register sets for the device.
> >> +- reg-names: should be "emac" and "syscon", matching the register sets
> > 
> > Is syscon shared with other devices? Your example only has 1 reg 
> > address.
> > 
> 
> The example is bad, emac and syscon are two distinct regspaces.
> I will correct the example.

And the syscon registers are not shared with anything else? Typically, 
syscon registers would be a separate node not part of this blocks 
registers. The main thing is make sure you are not creating overlapping 
register addresses.

Rob