diff --git a/drivers/pinctrl/renesas/rcar/pfc_rcar.c b/drivers/pinctrl/renesas/rcar/pfc_rcar.c
index ad10b03fda0..881219e41ec 100644
--- a/drivers/pinctrl/renesas/rcar/pfc_rcar.c
+++ b/drivers/pinctrl/renesas/rcar/pfc_rcar.c
@@ -338,7 +338,10 @@ int pinctrl_configure_pin(const pinctrl_soc_pin_t *pin)
 
 	/* Select function for pin */
 	if ((pin->flags & RCAR_PIN_FLAGS_FUNC_SET) != 0U) {
-		pfc_rcar_set_ipsr(pfc_base, &pin->func);
+
+		if ((pin->flags & RCAR_PIN_FLAGS_FUNC_DUMMY) == 0U) {
+			pfc_rcar_set_ipsr(pfc_base, &pin->func);
+		}
 
 		if (RCAR_IS_GP_PIN(pin->pin)) {
 			pfc_rcar_set_gpsr(pfc_base, pin->pin, true);
diff --git a/include/zephyr/drivers/pinctrl/pinctrl_rcar_common.h b/include/zephyr/drivers/pinctrl/pinctrl_rcar_common.h
index c3563e014ba..aa4e8ba6b89 100644
--- a/include/zephyr/drivers/pinctrl/pinctrl_rcar_common.h
+++ b/include/zephyr/drivers/pinctrl/pinctrl_rcar_common.h
@@ -27,6 +27,8 @@ struct rcar_pin_func {
 #define RCAR_PIN_FLAGS_PUD      BIT(2)
 /** Alternate function for the pin is requested */
 #define RCAR_PIN_FLAGS_FUNC_SET BIT(3)
+/** Ignore IPSR settings for alternate function pin */
+#define RCAR_PIN_FLAGS_FUNC_DUMMY BIT(4)
 
 #define RCAR_PIN_PULL_UP      (RCAR_PIN_FLAGS_PULL_SET | RCAR_PIN_FLAGS_PUEN | RCAR_PIN_FLAGS_PUD)
 #define RCAR_PIN_PULL_DOWN    (RCAR_PIN_FLAGS_PULL_SET | RCAR_PIN_FLAGS_PUEN)
@@ -52,11 +54,17 @@ typedef struct pinctrl_soc_pin {
 		((RCAR_IPSR(node_id) & 0xFU))	       \
 	}
 
+#define RCAR_PIN_IS_FUNC_DUMMY(node_id)					       \
+	((((RCAR_IPSR(node_id) >> 10U) & 0x1FU) == 0x1F) &&		       \
+	 (((RCAR_IPSR(node_id) >> 4U) & 0x1FU) == 0x1F) &&		       \
+	 ((RCAR_IPSR(node_id) & 0xFU) == 0xF))
+
 #define RCAR_PIN_FLAGS(node_id)						       \
 	DT_PROP(node_id, bias_pull_up)   * RCAR_PIN_PULL_UP |		       \
 	DT_PROP(node_id, bias_pull_down) * RCAR_PIN_PULL_DOWN |		       \
 	DT_PROP(node_id, bias_disable)   * RCAR_PIN_PULL_DISABLE |	       \
-	RCAR_HAS_IPSR(node_id) * RCAR_PIN_FLAGS_FUNC_SET
+	RCAR_HAS_IPSR(node_id) * RCAR_PIN_FLAGS_FUNC_SET |		       \
+	RCAR_PIN_IS_FUNC_DUMMY(node_id) * RCAR_PIN_FLAGS_FUNC_DUMMY
 
 #define RCAR_DT_PIN(node_id)						       \
 	{								       \
diff --git a/include/zephyr/dt-bindings/pinctrl/renesas/pinctrl-r8a779f0.h b/include/zephyr/dt-bindings/pinctrl/renesas/pinctrl-r8a779f0.h
index 50e8a358007..7fbceb40673 100644
--- a/include/zephyr/dt-bindings/pinctrl/renesas/pinctrl-r8a779f0.h
+++ b/include/zephyr/dt-bindings/pinctrl/renesas/pinctrl-r8a779f0.h
@@ -275,6 +275,21 @@
 #define FUNC_TCLK1                 IP0SR1(0, 1)
 #define FUNC_HSCK2                 IP0SR1(0, 2)
 #define FUNC_GP1_01                IP0SR1(4, 0)
+
+#define FUNC_MMC_SD_CLK            IPSR_DUMMY
+#define FUNC_MMC_SD_D0             IPSR_DUMMY
+#define FUNC_MMC_SD_D1             IPSR_DUMMY
+#define FUNC_MMC_SD_D2             IPSR_DUMMY
+#define FUNC_MMC_SD_D3             IPSR_DUMMY
+#define FUNC_MMC_D4                IPSR_DUMMY
+#define FUNC_MMC_D5                IPSR_DUMMY
+#define FUNC_MMC_D6                IPSR_DUMMY
+#define FUNC_MMC_D7                IPSR_DUMMY
+#define FUNC_MMC_DS                IPSR_DUMMY
+#define FUNC_MMC_SD_CMD            IPSR_DUMMY
+#define FUNC_SD_CD                 IPSR_DUMMY
+#define FUNC_SD_WP                 IPSR_DUMMY
+
 #define FUNC_TCLK4                 IP0SR1(4, 1)
 #define FUNC_HRX2                  IP0SR1(4, 2)
 #define FUNC_GP1_02                IP0SR1(8, 0)
diff --git a/include/zephyr/dt-bindings/pinctrl/renesas/pinctrl-rcar-common.h b/include/zephyr/dt-bindings/pinctrl/renesas/pinctrl-rcar-common.h
index 30a2afe1db1..44669cc4644 100644
--- a/include/zephyr/dt-bindings/pinctrl/renesas/pinctrl-rcar-common.h
+++ b/include/zephyr/dt-bindings/pinctrl/renesas/pinctrl-rcar-common.h
@@ -82,6 +82,18 @@
 #define IP2SR7(shift, func) IPnSR(2, 7, shift, func)
 #define IP3SR7(shift, func) IPnSR(3, 7, shift, func)
 
+/**
+ * @brief Macro to define a dummy IPSR flag for a pin
+ *
+ * This macro is used to define a dummy IPSR flag for a pin in the R-Car PFC
+ * driver. It is intended for pins that do not have a specific function
+ * defined in IPSR but always act as a peripheral. The dummy IPSR flag ensures
+ * that the driver sets the 'peripheral' bit for such pins.
+ *
+ * @see RCAR_PIN_FLAGS_FUNC_DUMMY
+ */
+#define IPSR_DUMMY IPnSR(0x1f, 7, 0x1f, 0xf)
+
 #define PIN_VOLTAGE_NONE 0
 #define PIN_VOLTAGE_1P8V 1
 #define PIN_VOLTAGE_3P3V 2