diff --git a/drivers/mfd/ocelot-core.c b/drivers/mfd/ocelot-core.c
index e1772ff00cad..9cccf54fc9c8 100644
--- a/drivers/mfd/ocelot-core.c
+++ b/drivers/mfd/ocelot-core.c
@@ -45,6 +45,9 @@
 #define VSC7512_SIO_CTRL_RES_START	0x710700f8
 #define VSC7512_SIO_CTRL_RES_SIZE	0x00000100
 
+#define VSC7512_HSIO_RES_START		0x710d0000
+#define VSC7512_HSIO_RES_SIZE		0x00000128
+
 #define VSC7512_ANA_RES_START		0x71880000
 #define VSC7512_ANA_RES_SIZE		0x00010000
 
@@ -129,8 +132,13 @@ static const struct resource vsc7512_sgpio_resources[] = {
 	DEFINE_RES_REG_NAMED(VSC7512_SIO_CTRL_RES_START, VSC7512_SIO_CTRL_RES_SIZE, "gcb_sio"),
 };
 
+static const struct resource vsc7512_serdes_resources[] = {
+	DEFINE_RES_REG_NAMED(VSC7512_HSIO_RES_START, VSC7512_HSIO_RES_SIZE, "hsio"),
+};
+
 static const struct resource vsc7512_switch_resources[] = {
 	DEFINE_RES_REG_NAMED(VSC7512_ANA_RES_START, VSC7512_ANA_RES_SIZE, "ana"),
+	DEFINE_RES_REG_NAMED(VSC7512_HSIO_RES_START, VSC7512_HSIO_RES_SIZE, "hsio"),
 	DEFINE_RES_REG_NAMED(VSC7512_QS_RES_START, VSC7512_QS_RES_SIZE, "qs"),
 	DEFINE_RES_REG_NAMED(VSC7512_QSYS_RES_START, VSC7512_QSYS_RES_SIZE, "qsys"),
 	DEFINE_RES_REG_NAMED(VSC7512_REW_RES_START, VSC7512_REW_RES_SIZE, "rew"),
@@ -176,6 +184,11 @@ static const struct mfd_cell vsc7512_devs[] = {
 		.use_of_reg = true,
 		.num_resources = ARRAY_SIZE(vsc7512_miim1_resources),
 		.resources = vsc7512_miim1_resources,
+	}, {
+		.name = "ocelot-serdes",
+		.of_compatible = "mscc,vsc7514-serdes",
+		.num_resources = ARRAY_SIZE(vsc7512_serdes_resources),
+		.resources = vsc7512_serdes_resources,
 	}, {
 		.name = "ocelot-ext-switch",
 		.of_compatible = "mscc,vsc7512-switch",