diff mbox series

[net-next,v2,7/7] arm64: dts: mt7622: add mt7531 dsa to bananapi-bpi-r64 board

Message ID 2a986604b49f7bfbee3898c8870bb0cf8182e879.1597729692.git.landen.chao@mediatek.com (mailing list archive)
State New, archived
Headers show
Series net-next: dsa: mt7530: add support for MT7531 | expand

Commit Message

Landen Chao Aug. 18, 2020, 7:14 a.m. UTC
Add mt7531 dsa to bananapi-bpi-r64 board for 5 giga Ethernet ports support.

Signed-off-by: Landen Chao <landen.chao@mediatek.com>
---
 .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

Comments

Vladimir Oltean Aug. 18, 2020, 4:24 p.m. UTC | #1
On Tue, Aug 18, 2020 at 03:14:12PM +0800, Landen Chao wrote:
> Add mt7531 dsa to bananapi-bpi-r64 board for 5 giga Ethernet ports support.
> 
> Signed-off-by: Landen Chao <landen.chao@mediatek.com>
> ---
>  .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> index d174ad214857..c57b2571165f 100644
> --- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> +++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> @@ -143,6 +143,50 @@
>  	mdio: mdio-bus {
>  		#address-cells = <1>;
>  		#size-cells = <0>;
> +
> +		switch@0 {
> +			compatible = "mediatek,mt7531";
> +			reg = <0>;
> +			reset-gpios = <&pio 54 0>;
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					label = "wan";
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +					label = "lan0";
> +				};
> +
> +				port@2 {
> +					reg = <2>;
> +					label = "lan1";
> +				};
> +
> +				port@3 {
> +					reg = <3>;
> +					label = "lan2";
> +				};
> +
> +				port@4 {
> +					reg = <4>;
> +					label = "lan3";
> +				};
> +
> +				port@6 {
> +					reg = <6>;
> +					label = "cpu";
> +					ethernet = <&gmac0>;
> +					phy-mode = "2500base-x";
> +				};

Is there any reason why you're not specifying a fixed-link node here?

> +			};
> +		};
> +
>  	};
>  };
>  
> -- 
> 2.17.1

Thanks,
-Vladimir
Landen Chao Aug. 19, 2020, 8:15 a.m. UTC | #2
On Wed, 2020-08-19 at 00:24 +0800, Vladimir Oltean wrote:
> On Tue, Aug 18, 2020 at 03:14:12PM +0800, Landen Chao wrote:
> > Add mt7531 dsa to bananapi-bpi-r64 board for 5 giga Ethernet ports support.
> > 
> > Signed-off-by: Landen Chao <landen.chao@mediatek.com>
> > ---
> >  .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  | 44 +++++++++++++++++++
> >  1 file changed, 44 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> > index d174ad214857..c57b2571165f 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> > +++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> > @@ -143,6 +143,50 @@
> >  	mdio: mdio-bus {
> >  		#address-cells = <1>;
> >  		#size-cells = <0>;
> > +
> > +		switch@0 {
> > +			compatible = "mediatek,mt7531";
> > +
[snip]
> > +				port@6 {
> > +					reg = <6>;
> > +					label = "cpu";
> > +					ethernet = <&gmac0>;
> > +					phy-mode = "2500base-x";
> > +				};
> 
> Is there any reason why you're not specifying a fixed-link node here?
I got the below feedback in v1, so I follow the DSA common design in v2.
v2 can work with fixed-link node or without fixed-link node in CPU port
node.

  "This fixed-link should not be needed. The DSA driver is supposed to
   configure the CPU port to its fastest speed by default. 2500 is
   the fastest speed a 2500Base-X link can do..."
> > +			};
> > +		};
> > +
> >  	};
> >  };
> >  
> > -- 
> > 2.17.1
> 
> Thanks,
> -Vladimir
Vladimir Oltean Aug. 19, 2020, 8:51 a.m. UTC | #3
On Wed, Aug 19, 2020 at 04:15:01PM +0800, Landen Chao wrote:
> On Wed, 2020-08-19 at 00:24 +0800, Vladimir Oltean wrote:
> > On Tue, Aug 18, 2020 at 03:14:12PM +0800, Landen Chao wrote:
> > > Add mt7531 dsa to bananapi-bpi-r64 board for 5 giga Ethernet ports support.
> > > 
> > > Signed-off-by: Landen Chao <landen.chao@mediatek.com>
> > > ---
> > >  .../dts/mediatek/mt7622-bananapi-bpi-r64.dts  | 44 +++++++++++++++++++
> > >  1 file changed, 44 insertions(+)
> > > 
> > > diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> > > index d174ad214857..c57b2571165f 100644
> > > --- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> > > +++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
> > > @@ -143,6 +143,50 @@
> > >  	mdio: mdio-bus {
> > >  		#address-cells = <1>;
> > >  		#size-cells = <0>;
> > > +
> > > +		switch@0 {
> > > +			compatible = "mediatek,mt7531";
> > > +
> [snip]
> > > +				port@6 {
> > > +					reg = <6>;
> > > +					label = "cpu";
> > > +					ethernet = <&gmac0>;
> > > +					phy-mode = "2500base-x";
> > > +				};
> > 
> > Is there any reason why you're not specifying a fixed-link node here?
> I got the below feedback in v1, so I follow the DSA common design in v2.
> v2 can work with fixed-link node or without fixed-link node in CPU port
> node.
> 
>   "This fixed-link should not be needed. The DSA driver is supposed to
>    configure the CPU port to its fastest speed by default. 2500 is
>    the fastest speed a 2500Base-X link can do..."

See this discussion and the replies to it:

https://www.spinics.net/lists/netdev/msg630102.html

I think if mt7530 is using phylink for non-netdev ports (and it is), it
would be good to have standard bindings that phylink can parse. For
example, in lack of a "pause" specifier, will the CPU port use flow
control or won't it? Why? I think there's simply no good reason why
you'd omit 3 more lines now.

> > > +			};
> > > +		};
> > > +
> > >  	};
> > >  };
> > >  
> > > -- 
> > > 2.17.1
> > 
> > Thanks,
> > -Vladimir
> 

-Vladimir
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
index d174ad214857..c57b2571165f 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
@@ -143,6 +143,50 @@ 
 	mdio: mdio-bus {
 		#address-cells = <1>;
 		#size-cells = <0>;
+
+		switch@0 {
+			compatible = "mediatek,mt7531";
+			reg = <0>;
+			reset-gpios = <&pio 54 0>;
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+					label = "wan";
+				};
+
+				port@1 {
+					reg = <1>;
+					label = "lan0";
+				};
+
+				port@2 {
+					reg = <2>;
+					label = "lan1";
+				};
+
+				port@3 {
+					reg = <3>;
+					label = "lan2";
+				};
+
+				port@4 {
+					reg = <4>;
+					label = "lan3";
+				};
+
+				port@6 {
+					reg = <6>;
+					label = "cpu";
+					ethernet = <&gmac0>;
+					phy-mode = "2500base-x";
+				};
+			};
+		};
+
 	};
 };