diff --git a/drivers/phy/marvell/phy-mvebu-cp110-comphy.c b/drivers/phy/marvell/phy-mvebu-cp110-comphy.c
index c61469ed7cbe..076b2bfa8e7b 100644
--- a/drivers/phy/marvell/phy-mvebu-cp110-comphy.c
+++ b/drivers/phy/marvell/phy-mvebu-cp110-comphy.c
@@ -128,6 +128,7 @@
  * [ 5-11]: COMPHY port index
  * [12-16]: COMPHY mode
  * [17]: Clock source
+ * [18-20]: PCIe width (x1, x2, x4)
  */
 #define COMPHY_FW_POL_OFFSET	0
 #define COMPHY_FW_POL_MASK	GENMASK(1, 0)
@@ -142,24 +143,31 @@
 #define COMPHY_FW_PORT_MASK	GENMASK(11, 8)
 #define COMPHY_FW_MODE_OFFSET	12
 #define COMPHY_FW_MODE_MASK	GENMASK(16, 12)
+#define COMPHY_FW_WIDTH_OFFSET	18
+#define COMPHY_FW_WIDTH_MASK	GENMASK(20, 18)
 
-#define COMPHY_FW_PARAM_FULL(mode, port, speed, pol)			\
+#define COMPHY_FW_PARAM_FULL(mode, port, speed, pol, width)		\
 	((((pol) << COMPHY_FW_POL_OFFSET) & COMPHY_FW_POL_MASK) |	\
 	 (((mode) << COMPHY_FW_MODE_OFFSET) & COMPHY_FW_MODE_MASK) |	\
 	 (((port) << COMPHY_FW_PORT_OFFSET) & COMPHY_FW_PORT_MASK) |	\
-	 (((speed) << COMPHY_FW_SPEED_OFFSET) & COMPHY_FW_SPEED_MASK))
+	 (((speed) << COMPHY_FW_SPEED_OFFSET) & COMPHY_FW_SPEED_MASK) |	\
+	 (((width) << COMPHY_FW_WIDTH_OFFSET) & COMPHY_FW_WIDTH_MASK))
 
 #define COMPHY_FW_PARAM(mode, port)					\
-	COMPHY_FW_PARAM_FULL(mode, port, 0, 0)
+	COMPHY_FW_PARAM_FULL(mode, port, COMPHY_FW_SPEED_MAX, 0, 0)
 
 #define COMPHY_FW_PARAM_ETH(mode, port, speed)				\
-	COMPHY_FW_PARAM_FULL(mode, port, speed, 0)
+	COMPHY_FW_PARAM_FULL(mode, port, speed, 0, 0)
+
+#define COMPHY_FW_PARAM_PCIE(mode, port, width)				\
+	COMPHY_FW_PARAM_FULL(mode, port, COMPHY_FW_SPEED_5000, 0, width)
 
 #define COMPHY_FW_MODE_SATA		0x1
 #define COMPHY_FW_MODE_SGMII		0x2 /* SGMII 1G */
 #define COMPHY_FW_MODE_HS_SGMII		0x3 /* SGMII 2.5G */
 #define COMPHY_FW_MODE_USB3H		0x4
 #define COMPHY_FW_MODE_USB3D		0x5
+#define COMPHY_FW_MODE_PCIE		0x6
 #define COMPHY_FW_MODE_RXAUI		0x7
 #define COMPHY_FW_MODE_XFI		0x8 /* SFI: 0x9 (is treated like XFI) */
 
@@ -194,6 +202,7 @@ struct mvebu_comphy_conf {
 
 static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
 	/* lane 0 */
+	GEN_CONF(0, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
 	ETH_CONF(0, 1, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
 	ETH_CONF(0, 1, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_HS_SGMII),
 	GEN_CONF(0, 1, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
@@ -201,6 +210,7 @@ static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
 	GEN_CONF(1, 0, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
 	GEN_CONF(1, 0, PHY_MODE_USB_DEVICE_SS, COMPHY_FW_MODE_USB3D),
 	GEN_CONF(1, 0, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
+	GEN_CONF(1, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
 	ETH_CONF(1, 2, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
 	ETH_CONF(1, 2, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_HS_SGMII),
 	/* lane 2 */
@@ -210,7 +220,9 @@ static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
 	ETH_CONF(2, 0, PHY_INTERFACE_MODE_10GKR, 0x1, COMPHY_FW_MODE_XFI),
 	GEN_CONF(2, 0, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
 	GEN_CONF(2, 0, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
+	GEN_CONF(2, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
 	/* lane 3 */
+	GEN_CONF(3, 0, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
 	ETH_CONF(3, 1, PHY_INTERFACE_MODE_SGMII, 0x2, COMPHY_FW_MODE_SGMII),
 	ETH_CONF(3, 1, PHY_INTERFACE_MODE_2500BASEX, 0x2, COMPHY_FW_MODE_HS_SGMII),
 	ETH_CONF(3, 1, PHY_INTERFACE_MODE_RXAUI, -1, COMPHY_FW_MODE_RXAUI),
@@ -223,6 +235,7 @@ static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
 	ETH_CONF(4, 0, PHY_INTERFACE_MODE_RXAUI, -1, COMPHY_FW_MODE_RXAUI),
 	GEN_CONF(4, 0, PHY_MODE_USB_DEVICE_SS, COMPHY_FW_MODE_USB3D),
 	GEN_CONF(4, 1, PHY_MODE_USB_HOST_SS, COMPHY_FW_MODE_USB3H),
+	GEN_CONF(4, 1, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
 	ETH_CONF(4, 1, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
 	ETH_CONF(4, 1, PHY_INTERFACE_MODE_2500BASEX, -1, COMPHY_FW_MODE_HS_SGMII),
 	ETH_CONF(4, 1, PHY_INTERFACE_MODE_10GKR, -1, COMPHY_FW_MODE_XFI),
@@ -231,6 +244,7 @@ static const struct mvebu_comphy_conf mvebu_comphy_cp110_modes[] = {
 	GEN_CONF(5, 1, PHY_MODE_SATA, COMPHY_FW_MODE_SATA),
 	ETH_CONF(5, 2, PHY_INTERFACE_MODE_SGMII, 0x1, COMPHY_FW_MODE_SGMII),
 	ETH_CONF(5, 2, PHY_INTERFACE_MODE_2500BASEX, 0x1, COMPHY_FW_MODE_HS_SGMII),
+	GEN_CONF(5, 2, PHY_MODE_PCIE, COMPHY_FW_MODE_PCIE),
 };
 
 struct mvebu_comphy_priv {
@@ -265,6 +279,8 @@ static int mvebu_comphy_get_mode(bool fw_mode, int lane, int port,
 				 enum phy_mode mode, int submode)
 {
 	int i, n = ARRAY_SIZE(mvebu_comphy_cp110_modes);
+	/* Ignore PCIe submode: it represents the width */
+	bool ignore_submode = (mode == PHY_MODE_PCIE);
 	const struct mvebu_comphy_conf *conf;
 
 	/* Unused PHY mux value is 0x0 */
@@ -276,7 +292,7 @@ static int mvebu_comphy_get_mode(bool fw_mode, int lane, int port,
 		if (conf->lane == lane &&
 		    conf->port == port &&
 		    conf->mode == mode &&
-		    conf->submode == submode)
+		    (conf->submode == submode || ignore_submode))
 			break;
 	}
 
@@ -678,6 +694,12 @@ static int mvebu_comphy_power_on(struct phy *phy)
 		dev_dbg(priv->dev, "set lane %d to SATA mode\n", lane->id);
 		fw_param = COMPHY_FW_PARAM(fw_mode, lane->port);
 		break;
+	case PHY_MODE_PCIE:
+		dev_dbg(priv->dev, "set lane %d to PCIe mode (x%d)\n", lane->id,
+			lane->submode);
+		fw_param = COMPHY_FW_PARAM_PCIE(fw_mode, lane->port,
+						lane->submode);
+		break;
 	default:
 		dev_err(priv->dev, "unsupported PHY mode (%d)\n", lane->mode);
 		return -ENOTSUPP;
@@ -714,6 +736,11 @@ static int mvebu_comphy_set_mode(struct phy *phy,
 
 	lane->mode = mode;
 	lane->submode = submode;
+
+	/* PCIe submode represents the width */
+	if (mode == PHY_MODE_PCIE && !lane->submode)
+		lane->submode = 1;
+
 	return 0;
 }
 
