linux-kernel - Re: [PATCH v3 3/3] arm64: dts: meson-axg: add clock DT info for Meson AXG SoC

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Date:   Fri, 01 Dec 2017 17:59:43 +0100
From:   Jerome Brunet <jbrunet@...libre.com>
To:     Stephen Boyd <sboyd@...eaurora.org>,
        Yixun Lan <yixun.lan@...ogic.com>
Cc:     Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Carlo Caione <carlo@...one.org>,
        Qiufang Dai <qiufang.dai@...ogic.com>,
        linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/3] arm64: dts: meson-axg: add clock DT info for
 Meson AXG SoC

On Fri, 2017-12-01 at 08:34 -0800, Stephen Boyd wrote:
> On 11/30, Yixun Lan wrote:
> > Hi Stephen
> > 
> > On 11/30/17 03:35, Stephen Boyd wrote:
> > > On 11/28, Yixun Lan wrote:
> > > > diff --git a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
> > > > b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
> > > > index b932a784b02a..36a2e98338a8 100644
> > > > --- a/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
> > > > +++ b/arch/arm64/boot/dts/amlogic/meson-axg.dtsi
> > > > @@ -7,6 +7,7 @@
> > > >  #include <dt-bindings/gpio/gpio.h>
> > > >  #include <dt-bindings/interrupt-controller/irq.h>
> > > >  #include <dt-bindings/interrupt-controller/arm-gic.h>
> > > > +#include <dt-bindings/clock/axg-clkc.h>
> > > >  
> > > >  / {
> > > >  	compatible = "amlogic,meson-axg";
> > > > @@ -148,6 +149,20 @@
> > > >  			#address-cells = <0>;
> > > >  		};
> > > >  
> > > > +		hiubus: hiubus@...3c000 {
> > > 
> > > Maybe just call the node "bus@...3c000"?
> > > 
> > 
> > isn't this just a name? what's the benefits to change?
> > personally, I tend to keep it this way, because it's better map to the
> > data sheet
> > 
> > we also has 'aobus', 'cbus' scattered there..
> 
> Per the ePAPR node names are supposed to be generic, like disk,
> cpu, display-controller, gpu, etc. I've never heard of a hiubus,
> so probably it's some vendor specific thing? We have the phandle
> anyway so it's not like we're losing much information here.

Stephen, there is a lot of busses on platform. We can't just call them all
'bus'.
I don't get the problem with this name.
We are re-using the name from the datasheet here, no fancy invention. It seems
to be quite common. 

>