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- <devnull+arinc.unal.arinc9.com@kernel.org>
-Date: Tue, 30 Apr 2024 08:01:33 +0300
-Subject: [PATCH net-next v2] net: dsa: mt7530: detect PHY muxing when PHY
- is defined on switch MDIO bus
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-To: Daniel Golle <daniel@makrotopia.org>, DENG Qingfang <dqfext@gmail.com>,
- Sean Wang <sean.wang@mediatek.com>, Andrew Lunn <andrew@lunn.ch>,
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- Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
- Matthias Brugger <matthias.bgg@gmail.com>,
- AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
-Cc: Bartel Eerdekens <bartel.eerdekens@constell8.be>,
- mithat.guner@xeront.com, erkin.bozoglu@xeront.com, netdev@vger.kernel.org,
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-
-From: Arınç ÜNAL <arinc.unal@arinc9.com>
-
-Currently, the MT7530 DSA subdriver configures the MT7530 switch to provide
-direct access to switch PHYs, meaning, the switch PHYs listen on the MDIO
-bus the switch listens on. The PHY muxing feature makes use of this.
-
-This is problematic as the PHY may be attached before the switch is
-initialised, in which case, the PHY will fail to be attached.
-
-Since commit 91374ba537bd ("net: dsa: mt7530: support OF-based registration
-of switch MDIO bus"), we can describe the switch PHYs on the MDIO bus of
-the switch on the device tree. Extend the check to detect PHY muxing when
-the PHY is defined on the MDIO bus of the switch on the device tree.
-
-When the PHY is described this way, the switch will be initialised first,
-then the switch MDIO bus will be registered. Only after these steps, the
-PHY will be attached.
-
-Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
----
-Changes in v2:
-- Address the terminology on the patch log.
-- Link to v1: https://lore.kernel.org/r/20240429-b4-for-netnext-mt7530-use-switch-mdio-bus-for-phy-muxing-v1-1-1f775983e155@arinc9.com
----
- drivers/net/dsa/mt7530.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-
----
-base-commit: 5c4c0edca68a5841a8d53ccd49596fe199c8334c
-change-id: 20240429-b4-for-netnext-mt7530-use-switch-mdio-bus-for-phy-muxing-586269371c55
-
-Best regards,
-
---- a/drivers/net/dsa/mt7530.c
-+++ b/drivers/net/dsa/mt7530.c
-@@ -2483,7 +2483,8 @@ mt7530_setup(struct dsa_switch *ds)
- if (!phy_node)
- continue;
-
-- if (phy_node->parent == priv->dev->of_node->parent) {
-+ if (phy_node->parent == priv->dev->of_node->parent ||
-+ phy_node->parent->parent == priv->dev->of_node) {
- ret = of_get_phy_mode(mac_np, &interface);
- if (ret && ret != -ENODEV) {
- of_node_put(mac_np);
projects / openwrt / staging / stintel.git / blobdiff