diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
index aa86fcc766fd..43444909d1d8 100644
--- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
+++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
@@ -762,11 +762,13 @@ static int rk3588_combphy_cfg(struct rockchip_combphy_priv *priv)
 			val = 0x4c;
 			writel(val, priv->mmio + (0x1b << 2));
 
-			/* Set up su_trim:  */
-			val = 0xf0;
+			/* Set up su_trim: T3 */
+			val = 0xb0;
 			writel(val, priv->mmio + (0xa << 2));
-			val = 0x4;
+			val = 0x47;
 			writel(val, priv->mmio + (0xb << 2));
+			val = 0x57;
+			writel(val, priv->mmio + (0xd << 2));
 		} else if (priv->mode == PHY_TYPE_SATA) {
 			/* downward spread spectrum +500ppm */
 			val = readl(priv->mmio + (0x1f << 2));