variant: Adds support for Renesas FPB-RA8E1

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Author: soburi

variants/fpb_ra8e1_r7fa8e1afdcfb/fpb_ra8e1_r7fa8e1afdcfb.overlay

@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2026 TOKITA Hiroshi
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&pinctrl {
+	adc1_default: adc1_default {
+		group1 {
+			/* input */
+			psels = <RA_PSEL(RA_PSEL_ADC, 0, 5)>;
+			renesas,analog-enable;
+		};
+	};
+
+	pwm0_default: pwm0_default {
+		group1 {
+			/* GTIOC0A */
+			psels = <RA_PSEL(RA_PSEL_GPT0, 4, 5)>;
+			drive-strength = "medium";
+		};
+	};
+
+	pwm2_default: pwm2_default {
+		group1 {
+			/* GTIOC2A */
+			psels = <RA_PSEL(RA_PSEL_GPT0, 0, 14)>;
+			drive-strength = "medium";
+		};
+
+		group2 {
+			/* GTIOC2B */
+			psels = <RA_PSEL(RA_PSEL_GPT0, 1, 13)>;
+			drive-strength = "medium";
+		};
+	};
+
+	pwm3_default: pwm3_default {
+		group2 {
+			/* GTIOC3B */
+			psels = <RA_PSEL(RA_PSEL_GPT0, 1, 12)>;
+			drive-strength = "medium";
+		};
+	};
+	pwm4_default: pwm4_default {
+		group2 {
+			/* GTIOC4B */
+			psels = <RA_PSEL(RA_PSEL_GPT0, 2, 4)>;
+			drive-strength = "medium";
+		};
+	};
+	pwm5_default: pwm5_default {
+		group2 {
+			/* GTIOC5B */
+			psels = <RA_PSEL(RA_PSEL_GPT0, 2, 2)>;
+			drive-strength = "medium";
+		};
+	};
+};
+
+&adc0 {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	channel@0 {
+		reg = <0>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,resolution = <12>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,vref-mv = <3300>;
+	};
+
+	channel@4 {
+		reg = <4>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,resolution = <12>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,vref-mv = <3300>;
+	};
+
+	channel@7 {
+		reg = <7>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,resolution = <12>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,vref-mv = <3300>;
+	};
+};
+
+&adc1 {
+	pinctrl-0 = <&adc1_default>;
+	pinctrl-names = "default";
+	average-count = <4>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	channel@1 {
+		reg = <1>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,resolution = <12>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,vref-mv = <3300>;
+	};
+
+	channel@4 {
+		reg = <4>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,resolution = <12>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,vref-mv = <3300>;
+	};
+
+	channel@7 {
+		reg = <7>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,resolution = <12>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,vref-mv = <3300>;
+	};
+};
+
+&pwm0 {
+	pinctrl-0 = <&pwm0_default>;
+	pinctrl-names = "default";
+	interrupts = <64 1>, <65 1>;
+	interrupt-names = "gtioca", "overflow";
+	status = "okay";
+};
+
+&pwm2 {
+	pinctrl-0 = <&pwm2_default>;
+	pinctrl-names = "default";
+	interrupts = <66 1>, <67 1>;
+	interrupt-names = "gtioca", "overflow";
+	status = "okay";
+};
+
+&pwm3 {
+	pinctrl-0 = <&pwm3_default>;
+	pinctrl-names = "default";
+	interrupts = <68 1>, <69 1>;
+	interrupt-names = "gtioca", "overflow";
+	status = "okay";
+};
+
+&pwm4 {
+	pinctrl-0 = <&pwm4_default>;
+	pinctrl-names = "default";
+	interrupts = <70 1>, <71 1>;
+	interrupt-names = "gtioca", "overflow";
+	status = "okay";
+};
+
+&pwm5 {
+	pinctrl-0 = <&pwm5_default>;
+	pinctrl-names = "default";
+	interrupts = <72 1>, <73 1>;
+	interrupt-names = "gtioca", "overflow";
+	status = "okay";
+};
+
+&port_irq4 {
+	interrupts = <87 12>;
+	status = "okay";
+};
+
+&port_irq8 {
+	interrupts = <88 12>;
+	status = "okay";
+};