diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7790.c b/drivers/pinctrl/sh-pfc/pfc-r8a7790.c
index 80d33c7398df..3366ed561cce 100644
--- a/drivers/pinctrl/sh-pfc/pfc-r8a7790.c
+++ b/drivers/pinctrl/sh-pfc/pfc-r8a7790.c
@@ -28,6 +28,12 @@
 	PORT_GP_32(4, fn, sfx),						\
 	PORT_GP_32(5, fn, sfx)
 
+#define CPU_ALL_NOGP(fn)		\
+	PIN_NOGP(IIC0_SDA, "AF15", fn),	\
+	PIN_NOGP(IIC0_SCL, "AG15", fn),	\
+	PIN_NOGP(IIC3_SDA, "AH15", fn),	\
+	PIN_NOGP(IIC3_SCL, "AJ15", fn)
+
 enum {
 	PINMUX_RESERVED = 0,
 
@@ -1727,19 +1733,17 @@ static const u16 pinmux_data[] = {
 	PINMUX_DATA(I2C3_SDA_MARK, FN_SEL_IICDVFS_1),
 };
 
-/* R8A7790 has 6 banks with 32 GPIOs in each = 192 GPIOs */
-#define ROW_GROUP_A(r) ('Z' - 'A' + 1 + (r))
-#define PIN_NUMBER(r, c) (((r) - 'A') * 31 + (c) + 200)
-#define PIN_A_NUMBER(r, c) PIN_NUMBER(ROW_GROUP_A(r), c)
+/*
+ * Pins not associated with a GPIO port.
+ */
+enum {
+	GP_ASSIGN_LAST(),
+	NOGP_ALL(),
+};
 
 static const struct sh_pfc_pin pinmux_pins[] = {
 	PINMUX_GPIO_GP_ALL(),
-
-	/* Pins not associated with a GPIO port */
-	SH_PFC_PIN_NAMED(ROW_GROUP_A('F'), 15, AF15),
-	SH_PFC_PIN_NAMED(ROW_GROUP_A('G'), 15, AG15),
-	SH_PFC_PIN_NAMED(ROW_GROUP_A('H'), 15, AH15),
-	SH_PFC_PIN_NAMED(ROW_GROUP_A('J'), 15, AJ15),
+	PINMUX_NOGP_ALL(),
 };
 
 /* - AUDIO CLOCK ------------------------------------------------------------ */
@@ -2135,7 +2139,7 @@ static const unsigned int hscif1_ctrl_b_mux[] = {
 /* - I2C0 ------------------------------------------------------------------- */
 static const unsigned int i2c0_pins[] = {
 	/* SCL, SDA */
-	PIN_A_NUMBER('G', 15), PIN_A_NUMBER('F', 15),
+	PIN_IIC0_SCL, PIN_IIC0_SDA,
 };
 static const unsigned int i2c0_mux[] = {
 	I2C0_SCL_MARK, I2C0_SDA_MARK,
@@ -2201,7 +2205,7 @@ static const unsigned int i2c2_e_mux[] = {
 /* - I2C3 ------------------------------------------------------------------- */
 static const unsigned int i2c3_pins[] = {
 	/* SCL, SDA */
-	PIN_A_NUMBER('J', 15), PIN_A_NUMBER('H', 15),
+	PIN_IIC3_SCL, PIN_IIC3_SDA,
 };
 static const unsigned int i2c3_mux[] = {
 	I2C3_SCL_MARK, I2C3_SDA_MARK,
@@ -2209,7 +2213,7 @@ static const unsigned int i2c3_mux[] = {
 /* - IIC0 (I2C4) ------------------------------------------------------------ */
 static const unsigned int iic0_pins[] = {
 	/* SCL, SDA */
-	PIN_A_NUMBER('G', 15), PIN_A_NUMBER('F', 15),
+	PIN_IIC0_SCL, PIN_IIC0_SDA,
 };
 static const unsigned int iic0_mux[] = {
 	IIC0_SCL_MARK, IIC0_SDA_MARK,
@@ -2274,8 +2278,8 @@ static const unsigned int iic2_e_mux[] = {
 };
 /* - IIC3 (I2C7) ------------------------------------------------------------ */
 static const unsigned int iic3_pins[] = {
-/* SCL, SDA */
-	PIN_A_NUMBER('J', 15), PIN_A_NUMBER('H', 15),
+	/* SCL, SDA */
+	PIN_IIC3_SCL, PIN_IIC3_SDA,
 };
 static const unsigned int iic3_mux[] = {
 	IIC3_SCL_MARK, IIC3_SDA_MARK,