diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 70155e996f7d..d3b42adef057 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -404,9 +404,9 @@ mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
 	case PHY_INTERFACE_MODE_TRGMII:
 		trgint = 1;
 		if (priv->id == ID_MT7621) {
-			/* PLL frequency: 150MHz: 1.2GBit */
+			/* PLL frequency: 125MHz: 1.0GBit */
 			if (xtal == HWTRAP_XTAL_40MHZ)
-				ncpo1 = 0x0780;
+				ncpo1 = 0x0640;
 			if (xtal == HWTRAP_XTAL_25MHZ)
 				ncpo1 = 0x0a00;
 		} else { /* PLL frequency: 250MHz: 2.0Gbit */