diff --git a/drivers/clk/at91/at91rm9200.c b/drivers/clk/at91/at91rm9200.c
index 4b8a9c27cc9e..05060b72acab 100644
--- a/drivers/clk/at91/at91rm9200.c
+++ b/drivers/clk/at91/at91rm9200.c
@@ -163,7 +163,7 @@ static void __init at91rm9200_pmc_setup(struct device_node *np)
 
 	at91rm9200_pmc->chws[PMC_MCK] = hw;
 
-	usbck_hw = at91rm9200_clk_register_usb(regmap, "usbck", NULL,
+	usbck_hw = at91rm9200_clk_register_usb(regmap, "usbck",
 					       at91rm9200_pmc->chws[PMC_PLLBCK], usb_div);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
diff --git a/drivers/clk/at91/at91sam9260.c b/drivers/clk/at91/at91sam9260.c
index 71002ada33dd..2b0ffcee9e40 100644
--- a/drivers/clk/at91/at91sam9260.c
+++ b/drivers/clk/at91/at91sam9260.c
@@ -436,7 +436,7 @@ static void __init at91sam926x_pmc_setup(struct device_node *np,
 
 	at91sam9260_pmc->chws[PMC_MCK] = hw;
 
-	usbck_hw = at91rm9200_clk_register_usb(regmap, "usbck", NULL,
+	usbck_hw = at91rm9200_clk_register_usb(regmap, "usbck",
 					       at91sam9260_pmc->chws[PMC_PLLBCK], usb_div);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
diff --git a/drivers/clk/at91/at91sam9g45.c b/drivers/clk/at91/at91sam9g45.c
index bf5951097fca..1e5262b678f5 100644
--- a/drivers/clk/at91/at91sam9g45.c
+++ b/drivers/clk/at91/at91sam9g45.c
@@ -182,7 +182,7 @@ static void __init at91sam9g45_pmc_setup(struct device_node *np)
 
 	parent_hws[0] = at91sam9g45_pmc->chws[PMC_PLLACK];
 	parent_hws[1] = at91sam9g45_pmc->chws[PMC_UTMI];
-	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", NULL, parent_hws, 2);
+	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_hws, 2);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
 
diff --git a/drivers/clk/at91/at91sam9n12.c b/drivers/clk/at91/at91sam9n12.c
index fa7daab2793b..9b4e28b9f21b 100644
--- a/drivers/clk/at91/at91sam9n12.c
+++ b/drivers/clk/at91/at91sam9n12.c
@@ -207,7 +207,7 @@ static void __init at91sam9n12_pmc_setup(struct device_node *np)
 
 	at91sam9n12_pmc->chws[PMC_MCK] = hw;
 
-	usbck_hw = at91sam9n12_clk_register_usb(regmap, "usbck", NULL,
+	usbck_hw = at91sam9n12_clk_register_usb(regmap, "usbck",
 						at91sam9n12_pmc->chws[PMC_PLLBCK]);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
diff --git a/drivers/clk/at91/at91sam9x5.c b/drivers/clk/at91/at91sam9x5.c
index 994010f1cf03..1968dd69fbf7 100644
--- a/drivers/clk/at91/at91sam9x5.c
+++ b/drivers/clk/at91/at91sam9x5.c
@@ -228,7 +228,7 @@ static void __init at91sam9x5_pmc_setup(struct device_node *np,
 
 	parent_hws[0] = at91sam9x5_pmc->chws[PMC_PLLACK];
 	parent_hws[1] = at91sam9x5_pmc->chws[PMC_UTMI];
-	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", NULL, parent_hws, 2);
+	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_hws, 2);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
 
diff --git a/drivers/clk/at91/clk-usb.c b/drivers/clk/at91/clk-usb.c
index 21f50914c63e..37ea588cb534 100644
--- a/drivers/clk/at91/clk-usb.c
+++ b/drivers/clk/at91/clk-usb.c
@@ -221,7 +221,7 @@ static const struct clk_ops at91sam9n12_usb_ops = {
 
 static struct clk_hw * __init
 _at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
-			     const char **parent_names, struct clk_hw **parent_hws,
+			     struct clk_hw **parent_hws,
 			     u8 num_parents, u32 usbs_mask)
 {
 	struct at91sam9x5_clk_usb *usb;
@@ -235,10 +235,7 @@ _at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
 
 	init.name = name;
 	init.ops = &at91sam9x5_usb_ops;
-	if (parent_hws)
-		init.parent_hws = (const struct clk_hw **)parent_hws;
-	else
-		init.parent_names = parent_names;
+	init.parent_hws = (const struct clk_hw **)parent_hws;
 	init.num_parents = num_parents;
 	init.flags = CLK_SET_RATE_GATE | CLK_SET_PARENT_GATE |
 		     CLK_SET_RATE_PARENT;
@@ -260,26 +257,25 @@ _at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
 
 struct clk_hw * __init
 at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
-			    const char **parent_names, struct clk_hw **parent_hws,
+			    struct clk_hw **parent_hws,
 			    u8 num_parents)
 {
-	return _at91sam9x5_clk_register_usb(regmap, name, parent_names,
-					    parent_hws, num_parents, SAM9X5_USBS_MASK);
+	return _at91sam9x5_clk_register_usb(regmap, name, parent_hws,
+					    num_parents, SAM9X5_USBS_MASK);
 }
 
 struct clk_hw * __init
 sam9x60_clk_register_usb(struct regmap *regmap, const char *name,
-			 const char **parent_names, struct clk_hw **parent_hws,
+			 struct clk_hw **parent_hws,
 			 u8 num_parents)
 {
-	return _at91sam9x5_clk_register_usb(regmap, name, parent_names,
-					    parent_hws, num_parents,
-					    SAM9X60_USBS_MASK);
+	return _at91sam9x5_clk_register_usb(regmap, name, parent_hws,
+					    num_parents, SAM9X60_USBS_MASK);
 }
 
 struct clk_hw * __init
 at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
-			     const char *parent_name, struct clk_hw *parent_hw)
+			     struct clk_hw *parent_hw)
 {
 	struct at91sam9x5_clk_usb *usb;
 	struct clk_hw *hw;
@@ -292,10 +288,7 @@ at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
 
 	init.name = name;
 	init.ops = &at91sam9n12_usb_ops;
-	if (parent_hw)
-		init.parent_hws = (const struct clk_hw **)&parent_hw;
-	else
-		init.parent_names = &parent_name;
+	init.parent_hws = (const struct clk_hw **)&parent_hw;
 	init.num_parents = 1;
 	init.flags = CLK_SET_RATE_GATE | CLK_SET_RATE_PARENT;
 
@@ -399,8 +392,7 @@ static const struct clk_ops at91rm9200_usb_ops = {
 
 struct clk_hw * __init
 at91rm9200_clk_register_usb(struct regmap *regmap, const char *name,
-			    const char *parent_name, struct clk_hw *parent_hw,
-			    const u32 *divisors)
+			    struct clk_hw *parent_hw, const u32 *divisors)
 {
 	struct at91rm9200_clk_usb *usb;
 	struct clk_hw *hw;
@@ -413,10 +405,7 @@ at91rm9200_clk_register_usb(struct regmap *regmap, const char *name,
 
 	init.name = name;
 	init.ops = &at91rm9200_usb_ops;
-	if (parent_hw)
-		init.parent_hws = (const struct clk_hw **)&parent_hw;
-	else
-		init.parent_names = &parent_name;
+	init.parent_hws = (const struct clk_hw **)&parent_hw;
 	init.num_parents = 1;
 	init.flags = CLK_SET_RATE_PARENT;
 
diff --git a/drivers/clk/at91/dt-compat.c b/drivers/clk/at91/dt-compat.c
index dc8eb6036643..285ede5d6702 100644
--- a/drivers/clk/at91/dt-compat.c
+++ b/drivers/clk/at91/dt-compat.c
@@ -1065,7 +1065,7 @@ static void __init of_at91sam9x5_clk_usb_setup(struct device_node *np)
 	if (IS_ERR(regmap))
 		return;
 
-	hw = at91sam9x5_clk_register_usb(regmap, name, NULL, parent_hws,
+	hw = at91sam9x5_clk_register_usb(regmap, name, parent_hws,
 					 num_parents);
 	if (IS_ERR(hw))
 		return;
@@ -1099,7 +1099,7 @@ static void __init of_at91sam9n12_clk_usb_setup(struct device_node *np)
 	if (IS_ERR(regmap))
 		return;
 
-	hw = at91sam9n12_clk_register_usb(regmap, name, NULL, parent_hw);
+	hw = at91sam9n12_clk_register_usb(regmap, name, parent_hw);
 	if (IS_ERR(hw))
 		return;
 
@@ -1136,7 +1136,7 @@ static void __init of_at91rm9200_clk_usb_setup(struct device_node *np)
 	of_node_put(parent_np);
 	if (IS_ERR(regmap))
 		return;
-	hw = at91rm9200_clk_register_usb(regmap, name, NULL, parent_hw, divisors);
+	hw = at91rm9200_clk_register_usb(regmap, name, parent_hw, divisors);
 	if (IS_ERR(hw))
 		return;
 
diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h
index bdb2dfb8fa86..5e65f5b59536 100644
--- a/drivers/clk/at91/pmc.h
+++ b/drivers/clk/at91/pmc.h
@@ -247,18 +247,18 @@ at91_clk_register_system(struct regmap *regmap, const char *name,
 
 struct clk_hw * __init
 at91sam9x5_clk_register_usb(struct regmap *regmap, const char *name,
-			    const char **parent_names, struct clk_hw **parent_hws,
+			    struct clk_hw **parent_hws,
 			    u8 num_parents);
 struct clk_hw * __init
 at91sam9n12_clk_register_usb(struct regmap *regmap, const char *name,
-			     const char *parent_name, struct clk_hw *parent_hw);
+			     struct clk_hw *parent_hw);
 struct clk_hw * __init
 sam9x60_clk_register_usb(struct regmap *regmap, const char *name,
-			 const char **parent_names, struct clk_hw **parent_hws,
+			 struct clk_hw **parent_hws,
 			 u8 num_parents);
 struct clk_hw * __init
 at91rm9200_clk_register_usb(struct regmap *regmap, const char *name,
-			    const char *parent_name, struct clk_hw *parent_hw,
+			    struct clk_hw *parent_hw,
 			    const u32 *divisors);
 
 struct clk_hw * __init
diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index f344cbbc9c25..b3dfdcbc950f 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -302,7 +302,7 @@ static void __init sam9x60_pmc_setup(struct device_node *np)
 	parent_hws[0] = sam9x60_pmc->chws[PMC_PLLACK];
 	parent_hws[1] = sam9x60_pmc->chws[PMC_UTMI];
 	parent_hws[2] = main_osc_hw;
-	usbck_hw = sam9x60_clk_register_usb(regmap, "usbck", NULL, parent_hws, 3);
+	usbck_hw = sam9x60_clk_register_usb(regmap, "usbck", parent_hws, 3);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
 
diff --git a/drivers/clk/at91/sama5d2.c b/drivers/clk/at91/sama5d2.c
index 0fce17af769e..fa14c6f7d37a 100644
--- a/drivers/clk/at91/sama5d2.c
+++ b/drivers/clk/at91/sama5d2.c
@@ -288,7 +288,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
 
 	parent_hws[0] = sama5d2_pmc->chws[PMC_PLLACK];
 	parent_hws[1] = sama5d2_pmc->chws[PMC_UTMI];
-	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", NULL, parent_hws, 2);
+	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_hws, 2);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
 
diff --git a/drivers/clk/at91/sama5d3.c b/drivers/clk/at91/sama5d3.c
index c00380ed0000..0713a6b21c8a 100644
--- a/drivers/clk/at91/sama5d3.c
+++ b/drivers/clk/at91/sama5d3.c
@@ -207,7 +207,7 @@ static void __init sama5d3_pmc_setup(struct device_node *np)
 
 	parent_hws[0] = sama5d3_pmc->chws[PMC_PLLACK];
 	parent_hws[1] = sama5d3_pmc->chws[PMC_UTMI];
-	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", NULL, parent_hws, 2);
+	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_hws, 2);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
 
diff --git a/drivers/clk/at91/sama5d4.c b/drivers/clk/at91/sama5d4.c
index 0d2a834a5903..d0bd025876ac 100644
--- a/drivers/clk/at91/sama5d4.c
+++ b/drivers/clk/at91/sama5d4.c
@@ -228,7 +228,7 @@ static void __init sama5d4_pmc_setup(struct device_node *np)
 
 	parent_hws[0] = sama5d4_pmc->chws[PMC_PLLACK];
 	parent_hws[1] = sama5d4_pmc->chws[PMC_UTMI];
-	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", NULL, parent_hws, 2);
+	usbck_hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_hws, 2);
 	if (IS_ERR(usbck_hw))
 		goto err_free;
 
