From 523c392fe675f83f7db8460e52f7f9b99bccae65 Mon Sep 17 00:00:00 2001 From: David Bauer Date: Sun, 30 Apr 2023 13:45:33 +0200 Subject: [PATCH] generic: mt7530: enable PHY configuration using OF The MT753x switches provide a switch-internal MDIO bus for the embedded PHYs. Register a OF sub-node on the switch OF-node for this internal MDIO bus. This allows to configure the embedded PHYs using device-tree. Signed-off-by: David Bauer --- ...gister-OF-node-for-internal-MDIO-bus.patch | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 target/linux/generic/pending-5.15/795-mt7530-register-OF-node-for-internal-MDIO-bus.patch diff --git a/target/linux/generic/pending-5.15/795-mt7530-register-OF-node-for-internal-MDIO-bus.patch b/target/linux/generic/pending-5.15/795-mt7530-register-OF-node-for-internal-MDIO-bus.patch new file mode 100644 index 000000000000..f9b88db9955e --- /dev/null +++ b/target/linux/generic/pending-5.15/795-mt7530-register-OF-node-for-internal-MDIO-bus.patch @@ -0,0 +1,43 @@ +From 1d81e51d6d79d9098013b2e8cdd677bae998c5d8 Mon Sep 17 00:00:00 2001 +From: David Bauer +Date: Fri, 28 Apr 2023 02:22:59 +0200 +Subject: [PATCH 1/2] mt7530: register OF node for internal MDIO bus + +The MT753x switches provide a switch-internal MDIO bus for the embedded +PHYs. + +Register a OF sub-node on the switch OF-node for this internal MDIO bus. +This allows to configure the embedded PHYs using device-tree. + +Signed-off-by: David Bauer +--- + drivers/net/dsa/mt7530.c | 7 ++++++- + 1 file changed, 6 insertions(+), 1 deletion(-) + +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -2081,10 +2081,13 @@ mt7530_setup_mdio(struct mt7530_priv *pr + { + struct dsa_switch *ds = priv->ds; + struct device *dev = priv->dev; ++ struct device_node *np, *mnp; + struct mii_bus *bus; + static int idx; + int ret; + ++ np = priv->dev->of_node; ++ + bus = devm_mdiobus_alloc(dev); + if (!bus) + return -ENOMEM; +@@ -2101,7 +2104,9 @@ mt7530_setup_mdio(struct mt7530_priv *pr + if (priv->irq) + mt7530_setup_mdio_irq(priv); + +- ret = devm_mdiobus_register(dev, bus); ++ mnp = of_get_child_by_name(np, "mdio"); ++ ret = devm_of_mdiobus_register(dev, bus, mnp); ++ of_node_put(mnp); + if (ret) { + dev_err(dev, "failed to register MDIO bus: %d\n", ret); + if (priv->irq) -- 2.30.2