linux-kernel - [PATCH 02/10] dt-bindings: net: dsa: mediatek,mt7530: change mt7530 switch address

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Date:   Wed, 14 Sep 2022 11:54:43 +0300
From:   Arınç ÜNAL <arinc.unal@...nc9.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>,
        Sergio Paracuellos <sergio.paracuellos@...il.com>,
        erkin.bozoglu@...ont.com
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mips@...r.kernel.org,
        Arınç ÜNAL <arinc.unal@...nc9.com>,
        Sungbo Eo <mans0n@...ani.run>
Subject: [PATCH 02/10] dt-bindings: net: dsa: mediatek,mt7530: change mt7530 switch address

In the case of muxing phy0 of the MT7530 switch, the switch and the phy
will have the same address on the mdio bus, 0. This causes the ethernet
driver to fail since devices on the mdio bus cannot share an address.

Any address can be used for the switch, therefore, change the switch
address to 0x1f.

Suggested-by: Sungbo Eo <mans0n@...ani.run>
Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
---
 .../bindings/net/dsa/mediatek,mt7530.yaml     | 24 +++++++++----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
index f9e7b6e20b35..2c73d13adf14 100644
--- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml
@@ -294,9 +294,9 @@ examples:
         #address-cells = <1>;
         #size-cells = <0>;
 
-        switch@0 {
+        switch@1f {
             compatible = "mediatek,mt7530";
-            reg = <0>;
+            reg = <0x1f>;
 
             reset-gpios = <&pio 33 0>;
 
@@ -356,9 +356,9 @@ examples:
         #address-cells = <1>;
         #size-cells = <0>;
 
-        switch@0 {
+        switch@1f {
             compatible = "mediatek,mt7530";
-            reg = <0>;
+            reg = <0x1f>;
 
             mediatek,mcm;
             resets = <&ethsys MT2701_ETHSYS_MCM_RST>;
@@ -486,9 +486,9 @@ examples:
         #address-cells = <1>;
         #size-cells = <0>;
 
-        switch@0 {
+        switch@1f {
             compatible = "mediatek,mt7621";
-            reg = <0>;
+            reg = <0x1f>;
 
             mediatek,mcm;
             resets = <&sysc MT7621_RST_MCM>;
@@ -573,9 +573,9 @@ examples:
                 reg = <4>;
             };
 
-            switch@0 {
+            switch@1f {
                 compatible = "mediatek,mt7621";
-                reg = <0>;
+                reg = <0x1f>;
 
                 mediatek,mcm;
                 resets = <&sysc MT7621_RST_MCM>;
@@ -664,9 +664,9 @@ examples:
                 phy-mode = "rgmii";
             };
 
-            switch@0 {
+            switch@1f {
                 compatible = "mediatek,mt7621";
-                reg = <0>;
+                reg = <0x1f>;
 
                 mediatek,mcm;
                 resets = <&sysc MT7621_RST_MCM>;
@@ -745,9 +745,9 @@ examples:
                 phy-mode = "rgmii";
             };
 
-            switch@0 {
+            switch@1f {
                 compatible = "mediatek,mt7621";
-                reg = <0>;
+                reg = <0x1f>;
 
                 mediatek,mcm;
                 resets = <&sysc MT7621_RST_MCM>;
-- 
2.34.1