generic: v6.1, v6.6: add patch to fix PHY-muxing on MT7530

[openwrt/openwrt.git] / target / linux / generic / backport-6.1 / 790-68-v6.10-net-dsa-mt7530-explain-exposing-MDIO-bus-of-MT7531AE.patch

diff --git a/target/linux/generic/backport-6.1/790-68-v6.10-net-dsa-mt7530-explain-exposing-MDIO-bus-of-MT7531AE.patch b/target/linux/generic/backport-6.1/790-68-v6.10-net-dsa-mt7530-explain-exposing-MDIO-bus-of-MT7531AE.patch
new file mode 100644 (file)
index 0000000..666bcb7
--- /dev/null
+++ b/target/linux/generic/backport-6.1/790-68-v6.10-net-dsa-mt7530-explain-exposing-MDIO-bus-of-MT7531AE.patch
@@ -0,0 +1,33 @@
+From c45832fe783f468aaaace09ae95a30cbf0acf724 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
+Date: Mon, 22 Apr 2024 10:15:22 +0300
+Subject: [PATCH 15/15] net: dsa: mt7530: explain exposing MDIO bus of MT7531AE
+ better
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Unlike MT7531BE, the GPIO 6-12 pins are not used for RGMII on MT7531AE.
+Therefore, the GPIO 11-12 pins are set to function as MDC and MDIO to
+expose the MDIO bus of the switch. Replace the comment with a better
+explanation.
+
+Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+---
+ drivers/net/dsa/mt7530.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/dsa/mt7530.c
++++ b/drivers/net/dsa/mt7530.c
+@@ -2626,7 +2626,10 @@ mt7531_setup(struct dsa_switch *ds)
+       if (!priv->p5_sgmii) {
+               mt7531_pll_setup(priv);
+       } else {
+-              /* Let ds->slave_mii_bus be able to access external phy. */
++              /* Unlike MT7531BE, the GPIO 6-12 pins are not used for RGMII on
++               * MT7531AE. Set the GPIO 11-12 pins to function as MDC and MDIO
++               * to expose the MDIO bus of the switch.
++               */
+               mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO11_RG_RXD2_MASK,
+                          MT7531_EXT_P_MDC_11);
+               mt7530_rmw(priv, MT7531_GPIO_MODE1, MT7531_GPIO12_RG_RXD3_MASK,