The QCA8337 switch has a managed internal MDIO bus for its built-in
PHYs.  Declare the five PHYs in an mdio subnode of the switch and
link the LAN ports to them with phy-mode = "internal" and
phy-handle, so each switch port is connected to the correct internal
PHY instead of relying on the implicit legacy port-to-PHY mapping.

Assisted-by: LLM
Signed-off-by: Rosen Penev <[email protected]>
---
 arch/powerpc/boot/dts/turris1x.dts | 35 ++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/powerpc/boot/dts/turris1x.dts 
b/arch/powerpc/boot/dts/turris1x.dts
index d0b7c62b8c6e..58c9e7b34e50 100644
--- a/arch/powerpc/boot/dts/turris1x.dts
+++ b/arch/powerpc/boot/dts/turris1x.dts
@@ -174,26 +174,36 @@ fixed-link {
                                        port@1 {
                                                reg = <1>;
                                                label = "lan5";
+                                               phy-mode = "internal";
+                                               phy-handle = <&phy_port1>;
                                        };
 
                                        port@2 {
                                                reg = <2>;
                                                label = "lan4";
+                                               phy-mode = "internal";
+                                               phy-handle = <&phy_port2>;
                                        };
 
                                        port@3 {
                                                reg = <3>;
                                                label = "lan3";
+                                               phy-mode = "internal";
+                                               phy-handle = <&phy_port3>;
                                        };
 
                                        port@4 {
                                                reg = <4>;
                                                label = "lan2";
+                                               phy-mode = "internal";
+                                               phy-handle = <&phy_port4>;
                                        };
 
                                        port@5 {
                                                reg = <5>;
                                                label = "lan1";
+                                               phy-mode = "internal";
+                                               phy-handle = <&phy_port5>;
                                        };
 
                                        port@6 {
@@ -208,6 +218,31 @@ fixed-link {
                                                };
                                        };
                                };
+
+                               mdio {
+                                       #address-cells = <1>;
+                                       #size-cells = <0>;
+
+                                       phy_port1: ethernet-phy@0 {
+                                               reg = <0>;
+                                       };
+
+                                       phy_port2: ethernet-phy@1 {
+                                               reg = <1>;
+                                       };
+
+                                       phy_port3: ethernet-phy@2 {
+                                               reg = <2>;
+                                       };
+
+                                       phy_port4: ethernet-phy@3 {
+                                               reg = <3>;
+                                       };
+
+                                       phy_port5: ethernet-phy@4 {
+                                               reg = <4>;
+                                       };
+                               };
                        };
                };
 
-- 
2.55.0


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