pinctrl: renesas: rzt2h: Add support for RZ/N2H

The Renesas RZ/N2H (R9A09G087) SoC shares a similar pin controller
architecture with the RZ/T2H (R9A09G077) SoC, differing primarily in the
number of supported pins: 576 on RZ/N2H versus 729 on RZ/T2H.

Add the necessary pin configuration data and compatible string to enable
support for the RZ/N2H SoC in the RZ/T2H pinctrl driver.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250808133017.2053637-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Author: prabhakarlad

drivers/pinctrl/renesas/Kconfig

@@ -45,6 +45,7 @@ config PINCTRL_RENESAS
 	select PINCTRL_RZG2L if ARCH_R9A09G056
 	select PINCTRL_RZG2L if ARCH_R9A09G057
 	select PINCTRL_RZT2H if ARCH_R9A09G077
+	select PINCTRL_RZT2H if ARCH_R9A09G087
 	select PINCTRL_PFC_SH7203 if CPU_SUBTYPE_SH7203
 	select PINCTRL_PFC_SH7264 if CPU_SUBTYPE_SH7264
 	select PINCTRL_PFC_SH7269 if CPU_SUBTYPE_SH7269

drivers/pinctrl/renesas/pinctrl-rzt2h.c

@@ -762,17 +762,33 @@ static const u8 r9a09g077_gpio_configs[] = {
 	0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f,
 };
 
+static const u8 r9a09g087_gpio_configs[] = {
+	0x1f, 0xff, 0xff, 0x1f, 0x00, 0xfe, 0xff, 0x00, 0x7e, 0xf0, 0xff, 0x01,
+	0xff, 0xff, 0xff, 0x00, 0xe0, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x01,
+	0xe0, 0xff, 0xff, 0x7f, 0x00, 0xfe, 0xff, 0x7f, 0x00, 0xfc, 0x7f,
+};
+
 static struct rzt2h_pinctrl_data r9a09g077_data = {
 	.n_port_pins = ARRAY_SIZE(r9a09g077_gpio_configs) * RZT2H_PINS_PER_PORT,
 	.port_pin_configs = r9a09g077_gpio_configs,
 	.n_ports = ARRAY_SIZE(r9a09g077_gpio_configs),
 };
 
+static struct rzt2h_pinctrl_data r9a09g087_data = {
+	.n_port_pins = ARRAY_SIZE(r9a09g087_gpio_configs) * RZT2H_PINS_PER_PORT,
+	.port_pin_configs = r9a09g087_gpio_configs,
+	.n_ports = ARRAY_SIZE(r9a09g087_gpio_configs),
+};
+
 static const struct of_device_id rzt2h_pinctrl_of_table[] = {
 	{
 		.compatible = "renesas,r9a09g077-pinctrl",
 		.data = &r9a09g077_data,
 	},
+	{
+		.compatible = "renesas,r9a09g087-pinctrl",
+		.data = &r9a09g087_data,
+	},
 	{ /* sentinel */ }
 };