Re: [PATCH net-next 3/3] net: dsa: mt7530: Add support for port 5

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Quoting Florian Fainelli <f.fainelli@xxxxxxxxx>:

On 7/24/2019 9:25 PM, René van Dorst wrote:
Adding support for port 5.

Port 5 can muxed/interface to:
- internal 5th GMAC of the switch; can be used as 2nd CPU port or as
  extra port with an external phy for a 6th ethernet port.
- internal PHY of port 0 or 4; Used in most applications so that port 0
  or 4 is the WAN port and interfaces with the 2nd GMAC of the SOC.

Signed-off-by: René van Dorst <opensource@xxxxxxxxxx>

[snip]

+	/* Setup port 5 */
+	priv->p5_intf_sel = P5_DISABLED;
+	interface = PHY_INTERFACE_MODE_NA;
+
+	if (!dsa_is_unused_port(ds, 5)) {
+		priv->p5_intf_sel = P5_INTF_SEL_GMAC5;
+		interface = of_get_phy_mode(ds->ports[5].dn);
+	} else {
+		/* Scan the ethernet nodes. Look for GMAC1, Lookup used phy */
+		for_each_child_of_node(dn, mac_np) {
+			if (!of_device_is_compatible(mac_np,
+						     "mediatek,eth-mac"))
+				continue;
+			_id = of_get_property(mac_np, "reg", NULL);
+			if (be32_to_cpup(_id)  != 1)
+				continue;
+
+			interface = of_get_phy_mode(mac_np);
+			phy_node = of_parse_phandle(mac_np, "phy-handle", 0);
+
+			if (phy_node->parent == priv->dev->of_node->parent) {
+				_id = of_get_property(phy_node, "reg", NULL);
+				id = be32_to_cpup(_id);
+				if (id == 0)
+					priv->p5_intf_sel = P5_INTF_SEL_PHY_P0;
+				if (id == 4)
+					priv->p5_intf_sel = P5_INTF_SEL_PHY_P4;


Hi Florian,

Can you use of_mdio_parse_addr() here?

Yes that function be used.

Thanks for mention this function.

I see that I can refactor this scan routine a bit more.
Also I missing a of_node_put(phy_node) at the end.

--
Florian

Greats,

René






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