netdev - Re: [PATCH v2] ARM: dts: vf610: ZII: Add missing phy-mode and fixed links

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Date: Sun, 4 Jun 2023 13:24:35 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Shawn Guo <shawnguo@...nel.org>
Cc: Vladimir Oltean <vladimir.oltean@....com>, Andrew Lunn <andrew@...n.ch>,
	s.hauer@...gutronix.de, arm@...nel.org,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH v2] ARM: dts: vf610: ZII: Add missing phy-mode and fixed
 links

On Sun, Jun 04, 2023 at 08:07:48PM +0800, Shawn Guo wrote:
> On Mon, May 29, 2023 at 04:35:07PM +0300, Vladimir Oltean wrote:
> > On Thu, May 25, 2023 at 08:26:06PM +0200, Andrew Lunn wrote:
> > > diff --git a/arch/arm/boot/dts/vf610-zii-cfu1.dts b/arch/arm/boot/dts/vf610-zii-cfu1.dts
> > > index 96495d965163..1a19aec8957b 100644
> > > --- a/arch/arm/boot/dts/vf610-zii-cfu1.dts
> > > +++ b/arch/arm/boot/dts/vf610-zii-cfu1.dts
> > > @@ -202,7 +202,7 @@ port@5 {
> > >  
> > >  				port@6 {
> > >  					reg = <6>;
> > > -					label = "cpu";
> > > +					phy-mode = "rmii";
> > >  					ethernet = <&fec1>;
> > >  
> > >  					fixed-link {
> > > diff --git a/arch/arm/boot/dts/vf610-zii-dev-rev-b.dts b/arch/arm/boot/dts/vf610-zii-dev-rev-b.dts
> > > index 6280c5e86a12..6071eb6b33a0 100644
> > > --- a/arch/arm/boot/dts/vf610-zii-dev-rev-b.dts
> > > +++ b/arch/arm/boot/dts/vf610-zii-dev-rev-b.dts
> > > @@ -75,7 +75,7 @@ fixed-link {
> > >  
> > >  					port@6 {
> > >  						reg = <6>;
> > > -						label = "cpu";
> > > +						phy-mode = "rmii";
> > >  						ethernet = <&fec1>;
> > >  
> > >  						fixed-link {
> > > diff --git a/arch/arm/boot/dts/vf610-zii-dev-rev-c.dts b/arch/arm/boot/dts/vf610-zii-dev-rev-c.dts
> > > index c00d39562a10..6f9878f124c4 100644
> > > --- a/arch/arm/boot/dts/vf610-zii-dev-rev-c.dts
> > > +++ b/arch/arm/boot/dts/vf610-zii-dev-rev-c.dts
> > > @@ -44,7 +44,7 @@ ports {
> > >  
> > >  					port@0 {
> > >  						reg = <0>;
> > > -						label = "cpu";
> > > +						phy-mode = "rmii";
> > >  						ethernet = <&fec1>;
> > >  
> > >  						fixed-link {
> > > diff --git a/arch/arm/boot/dts/vf610-zii-scu4-aib.dts b/arch/arm/boot/dts/vf610-zii-scu4-aib.dts
> > > index 7b3276cd470f..df1335492a19 100644
> > > --- a/arch/arm/boot/dts/vf610-zii-scu4-aib.dts
> > > +++ b/arch/arm/boot/dts/vf610-zii-scu4-aib.dts
> > > @@ -59,7 +59,7 @@ ports {
> > >  
> > >  					port@0 {
> > >  						reg = <0>;
> > > -						label = "cpu";
> > > +						phy-mode = "rmii";
> > >  						ethernet = <&fec1>;
> > >  
> > >  						fixed-link {
> > > diff --git a/arch/arm/boot/dts/vf610-zii-spb4.dts b/arch/arm/boot/dts/vf610-zii-spb4.dts
> > > index 180acb0795b9..1461804ecaea 100644
> > > --- a/arch/arm/boot/dts/vf610-zii-spb4.dts
> > > +++ b/arch/arm/boot/dts/vf610-zii-spb4.dts
> > > @@ -140,7 +140,7 @@ ports {
> > >  
> > >  				port@0 {
> > >  					reg = <0>;
> > > -					label = "cpu";
> > > +					phy-mode = "rmii";
> > >  					ethernet = <&fec1>;
> > >  
> > >  					fixed-link {
> > > diff --git a/arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts b/arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts
> > > index 73fdace4cb42..463c2452b9b7 100644
> > > --- a/arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts
> > > +++ b/arch/arm/boot/dts/vf610-zii-ssmb-dtu.dts
> > > @@ -129,7 +129,7 @@ ports {
> > >  
> > >  				port@0 {
> > >  					reg = <0>;
> > > -					label = "cpu";
> > > +					phy-mode = "rmii";
> > >  					ethernet = <&fec1>;
> > >  
> > >  					fixed-link {
> > > diff --git a/arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts b/arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts
> > > index 20beaa8433b6..f5ae0d5de315 100644
> > > --- a/arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts
> > > +++ b/arch/arm/boot/dts/vf610-zii-ssmb-spu3.dts
> > > @@ -154,7 +154,7 @@ ports {
> > >  
> > >  				port@0 {
> > >  					reg = <0>;
> > > -					label = "cpu";
> > > +					phy-mode = "rmii";
> > >  					ethernet = <&fec1>;
> > >  
> > >  					fixed-link {
> > 
> > Shouldn't these have been rev-rmii to be consistent with what was done
> > for arm64?
> 
> Should I drop the patch for now, or can this be changed incrementally if
> needed?

What we have here is something that is "close enough". It isn't 100%
correct, but acceptable for the time being, and isn't something that
will ever become a problem, since the hardware itself can not have
its interface mode changed (it's set by pin strapping.)

It's something that can be fixed later.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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