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-rw-r--r--drivers/net/dsa/microchip/ksz_dcb.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz_dcb.c b/drivers/net/dsa/microchip/ksz_dcb.c
index a97106327562..086bc9b3cf53 100644
--- a/drivers/net/dsa/microchip/ksz_dcb.c
+++ b/drivers/net/dsa/microchip/ksz_dcb.c
@@ -805,5 +805,15 @@ int ksz_dcb_init(struct ksz_device *dev)
if (ret)
return ret;
+ /* Enable 802.1p priority control on Port 2 during switch initialization.
+ * This setup is critical for the apptrust functionality on Port 1, which
+ * relies on the priority settings of Port 2. Note: Port 1 is naturally
+ * configured before Port 2, necessitating this configuration order.
+ */
+ if (ksz_is_ksz88x3(dev))
+ return ksz_prmw8(dev, KSZ_PORT_2, KSZ8_REG_PORT_1_CTRL_0,
+ KSZ8_PORT_802_1P_ENABLE,
+ KSZ8_PORT_802_1P_ENABLE);
+
return 0;
}