diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 4a52cac7a192..777d6c291b33 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -57,13 +57,19 @@
 #define PIN_CFG_IOLH_C			BIT(13)
 #define PIN_CFG_SOFT_PS			BIT(14)
 
-#define RZG2L_MPXED_PIN_FUNCS		(PIN_CFG_IOLH_A | \
-					 PIN_CFG_SR | \
+#define RZG2L_MPXED_COMMON_PIN_FUNCS(group) \
+					(PIN_CFG_IOLH_##group | \
 					 PIN_CFG_PUPD | \
 					 PIN_CFG_FILONOFF | \
 					 PIN_CFG_FILNUM | \
 					 PIN_CFG_FILCLKSEL)
 
+#define RZG2L_MPXED_PIN_FUNCS		(RZG2L_MPXED_COMMON_PIN_FUNCS(A) | \
+					 PIN_CFG_SR)
+
+#define RZG3S_MPXED_PIN_FUNCS(group)	(RZG2L_MPXED_COMMON_PIN_FUNCS(group) | \
+					 PIN_CFG_SOFT_PS)
+
 #define RZG2L_MPXED_ETH_PIN_FUNCS(x)	((x) | \
 					 PIN_CFG_FILONOFF | \
 					 PIN_CFG_FILNUM | \
@@ -1313,6 +1319,36 @@ static const u32 r9a07g043_gpio_configs[] = {
 	RZG2L_GPIO_PORT_PACK(6, 0x22, RZG2L_MPXED_PIN_FUNCS),
 };
 
+static const u32 r9a08g045_gpio_configs[] = {
+	RZG2L_GPIO_PORT_PACK(4, 0x20, RZG3S_MPXED_PIN_FUNCS(A)),			/* P0  */
+	RZG2L_GPIO_PORT_PACK(5, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P1 */
+	RZG2L_GPIO_PORT_PACK(4, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P2 */
+	RZG2L_GPIO_PORT_PACK(4, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P3 */
+	RZG2L_GPIO_PORT_PACK(6, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P4 */
+	RZG2L_GPIO_PORT_PACK(5, 0x21, RZG3S_MPXED_PIN_FUNCS(A)),			/* P5  */
+	RZG2L_GPIO_PORT_PACK(5, 0x22, RZG3S_MPXED_PIN_FUNCS(A)),			/* P6  */
+	RZG2L_GPIO_PORT_PACK(5, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P7 */
+	RZG2L_GPIO_PORT_PACK(5, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P8 */
+	RZG2L_GPIO_PORT_PACK(4, 0x36, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P9 */
+	RZG2L_GPIO_PORT_PACK(5, 0x37, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P10 */
+	RZG2L_GPIO_PORT_PACK(4, 0x23, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN),		/* P11  */
+	RZG2L_GPIO_PORT_PACK(2, 0x24, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN),		/* P12  */
+	RZG2L_GPIO_PORT_PACK(5, 0x25, RZG3S_MPXED_PIN_FUNCS(A)),			/* P13  */
+	RZG2L_GPIO_PORT_PACK(3, 0x26, RZG3S_MPXED_PIN_FUNCS(A)),			/* P14  */
+	RZG2L_GPIO_PORT_PACK(4, 0x27, RZG3S_MPXED_PIN_FUNCS(A)),			/* P15  */
+	RZG2L_GPIO_PORT_PACK(2, 0x28, RZG3S_MPXED_PIN_FUNCS(A)),			/* P16  */
+	RZG2L_GPIO_PORT_PACK(4, 0x29, RZG3S_MPXED_PIN_FUNCS(A)),			/* P17  */
+	RZG2L_GPIO_PORT_PACK(6, 0x2a, RZG3S_MPXED_PIN_FUNCS(A)),			/* P18 */
+};
+
 static const struct {
 	struct rzg2l_dedicated_configs common[35];
 	struct rzg2l_dedicated_configs rzg2l_pins[7];
@@ -1399,6 +1435,46 @@ static const struct {
 	}
 };
 
+static const struct rzg2l_dedicated_configs rzg3s_dedicated_pins[] = {
+	{ "NMI", RZG2L_SINGLE_PIN_PACK(0x0, 0, (PIN_CFG_FILONOFF | PIN_CFG_FILNUM |
+						PIN_CFG_FILCLKSEL)) },
+	{ "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x1, 0, (PIN_CFG_IOLH_A | PIN_CFG_IEN |
+						      PIN_CFG_SOFT_PS)) },
+	{ "TDO", RZG2L_SINGLE_PIN_PACK(0x1, 1, (PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS)) },
+	{ "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0x6, 0, PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS) },
+	{ "SD0_CLK", RZG2L_SINGLE_PIN_PACK(0x10, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x10, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						     PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x10, 2, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x11, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x11, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x11, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x11, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x11, 4, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x11, 5, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x11, 6, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x11, 7, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x12, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x12, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						     PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x13, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x13, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x13, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x13, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+};
+
 static int rzg2l_gpio_get_gpioint(unsigned int virq, const struct rzg2l_pinctrl_data *data)
 {
 	unsigned int gpioint;
@@ -1761,6 +1837,9 @@ static int rzg2l_pinctrl_probe(struct platform_device *pdev)
 	BUILD_BUG_ON(ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT >
 		     ARRAY_SIZE(rzg2l_gpio_names));
 
+	BUILD_BUG_ON(ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT >
+		     ARRAY_SIZE(rzg2l_gpio_names));
+
 	pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
 	if (!pctrl)
 		return -ENOMEM;
@@ -1806,6 +1885,35 @@ static const struct rzg2l_hwcfg rzg2l_hwcfg = {
 	.iolh_groupb_oi = { 100, 66, 50, 33, },
 };
 
+static const struct rzg2l_hwcfg rzg3s_hwcfg = {
+	.regs = {
+		.pwpr = 0x3000,
+		.sd_ch = 0x3004,
+	},
+	.iolh_groupa_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 2200, 4400, 9000, 10000,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 1900, 4000, 8000, 9000,
+	},
+	.iolh_groupb_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 7000, 8000, 9000, 10000,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 4000, 6000, 8000, 9000,
+	},
+	.iolh_groupc_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 5200, 6000, 6550, 6800,
+		/* 2v5 source */
+		[RZG2L_IOLH_IDX_2V5] = 4700, 5300, 5800, 6100,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 4500, 5200, 5700, 6050,
+	},
+	.drive_strength_ua = true,
+	.func_base = 1,
+};
+
 static struct rzg2l_pinctrl_data r9a07g043_data = {
 	.port_pins = rzg2l_gpio_names,
 	.port_pin_configs = r9a07g043_gpio_configs,
@@ -1827,6 +1935,16 @@ static struct rzg2l_pinctrl_data r9a07g044_data = {
 	.hwcfg = &rzg2l_hwcfg,
 };
 
+static struct rzg2l_pinctrl_data r9a08g045_data = {
+	.port_pins = rzg2l_gpio_names,
+	.port_pin_configs = r9a08g045_gpio_configs,
+	.n_ports = ARRAY_SIZE(r9a08g045_gpio_configs),
+	.dedicated_pins = rzg3s_dedicated_pins,
+	.n_port_pins = ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT,
+	.n_dedicated_pins = ARRAY_SIZE(rzg3s_dedicated_pins),
+	.hwcfg = &rzg3s_hwcfg,
+};
+
 static const struct of_device_id rzg2l_pinctrl_of_table[] = {
 	{
 		.compatible = "renesas,r9a07g043-pinctrl",
@@ -1836,6 +1954,10 @@ static const struct of_device_id rzg2l_pinctrl_of_table[] = {
 		.compatible = "renesas,r9a07g044-pinctrl",
 		.data = &r9a07g044_data,
 	},
+	{
+		.compatible = "renesas,r9a08g045-pinctrl",
+		.data = &r9a08g045_data,
+	},
 	{ /* sentinel */ }
 };
 
