[D18][E71][DTO] add E71 carrier initial support

* USB OTG
* I2C MUX: TCA9545A
* IO EXP plus EEPROM: PCA9500
* audio codec: TLV320AIC3204
* SPI: NOR MT25QU256A

arch/arm64/boot/dts/seco/overlays/Makefile

@@ -42,6 +42,7 @@ dtbo-$(CONFIG_ARCH_MXC) += \
 	seco-imx8mm-myon2-v1r4.dtbo\
 	seco-imx8mm-myon2-v2r1.dtbo\
 	seco-imx8mp-d18-b79.dtbo\
+	seco-imx8mp-d18-e71.dtbo\
 	seco-imx8mp-d18-mv.dtbo\
 	seco-imx8mp-d18-hdmi.dtbo\
 	seco-imx8mp-d18-edp.dtbo\

arch/arm64/boot/dts/seco/overlays/seco-imx8mp-d18-e71-overlay.dts

+/*
+ * Copyright 2024 SECO
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <dt-bindings/clock/imx8mp-clock.h>
+#include <dt-bindings/gpio/gpio.h>
+#include "../include/imx8mp-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+/*  __________________________________________________________________________
+ * |                                                                          |
+ * |                            CARRIER BOARD E71                             |
+ * |__________________________________________________________________________|
+ */
+
+&{/} {
+	model = "SECO i.MX8MPlus LPDDR4 D18 on E71 carrier board";
+
+	reg_audio: regulator-soc-audio {
+		compatible = "regulator-fixed";
+		regulator-name = "tlv320aic32x4_supply";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+
+	rs_232_en_b_reg: rs_232_en_b_reg {
+		compatible = "regulator-fixed";
+		regulator-name = "rs_232_en_b_reg";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		enable-active-high;
+		gpio = <&pca9500_gpio 1 GPIO_ACTIVE_HIGH>;
+	};
+	rs_232_en_b_reg_consumer: RS_232_EN_B {
+		compatible          = "reg-userspace-consumer";
+		regulator-name      = "RS_232_EN_B";
+		regulator-supplies  = "rs_232_en_b_reg";
+		rs_232_en_b_reg-supply = <&rs_232_en_b_reg>;
+	};
+
+	sound {
+		status                            = "okay";
+		compatible                        = "simple-audio-card";
+		simple-audio-card,format          = "i2s";
+		simple-audio-card,name            = "tlv320-e71";
+		simple-audio-card,frame-master    = <&cpudai>;
+		simple-audio-card,bitclock-master = <&cpudai>;
+
+		cpudai: simple-audio-card,cpu {
+			sound-dai          = <&sai2>;
+			dai-tdm-slot-num   = <2>;
+			dai-tdm-slot-width = <16>;
+		};
+		simple-audio-card,codec {
+			sound-dai = <&tlvcodec 0>;
+		};
+	};
+
+	connector {
+		compatible = "gpio-usb-b-connector", "usb-b-connector";
+		label = "micro-USB";
+		type = "micro";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_usb_1_id>;
+		id-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
+		vbus-supply = <&reg_usb1_host_vbus>;
+
+		port {
+			usb_ep: endpoint {
+				remote-endpoint = <&usb_otg_ep>;
+			};
+		};
+	};
+};
+
+&i2c1 {
+	pca9500_gpio: gpio@24 {
+		compatible = "nxp,pcf8574";
+		reg = <0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		gpio-line-names = "TS_RST", "RS_232_EN#", "GPIO2", "GPIO3", "FLASH_WP#", "GPIO7", "S3_LED", "S5_LED";
+	};
+
+	pca9500_eeprom: eeprom@54 {
+		compatible = "atmel,24c02";
+		reg = <0x54>;
+		pagesize = <16>;
+	};
+};
+
+&i2c5 {
+	i2c-mux-tca9545@70 {
+		compatible = "nxp,pca9545";
+		reg = <0x70>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		i2c_exp0: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+		};
+
+		i2c_exp1: i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			tlvcodec: tlv320aic32x4@18 {
+				#sound-dai-cells = <0>;
+				status = "okay";
+				compatible = "ti,tlv320aic32x4";
+				reg = <0x18>;
+				reset-gpios = <&pca6416 8 GPIO_ACTIVE_LOW>;
+				ldoin-supply = <&reg_audio>;
+				iov-supply = <&reg_audio>;
+				clocks = <&clk IMX8MP_CLK_SAI2_ROOT>;
+				clock-names = "mclk";
+				mic-bias;
+			};
+		};
+
+		i2c_exp2: i2c@2 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <2>;
+		};
+
+		i2c_exp3: i2c@3 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <3>;
+		};
+	};
+};
+
+&flexspi {
+	flash@0 {
+		compatible = "micron,mt25qu256a", "jedec,spi-nor";
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <25000000>;
+		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <4>;
+	};
+};
+
+&sai2 {
+	assigned-clocks = <&clk IMX8MP_CLK_SAI2>;
+	assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;
+	assigned-clock-rates = <49152000>;
+	status = "okay";
+};
+
+&usb_dwc3_0 {
+	usb-role-switch;
+	role-switch-default-mode = "peripheral";
+	port {
+		usb_otg_ep: endpoint {
+			remote-endpoint = <&usb_ep>;
+		};
+	};
+};
+
+&{/} {
+	reg_lcd0_vdd_en: regulator-lcd0-vdd-en {
+		compatible = "regulator-fixed";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_lcd0_vdd>;
+		regulator-name = "lcd0_vdd_en";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		// polarity actually is driven via enable-active-high
+		gpio = <&gpio4 21 GPIO_ACTIVE_LOW>;
+		status = "disabled";
+	};
+
+	lcd0_backlight: lcd0_backlight {
+		compatible = "pwm-backlight";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_lcd0_bklt>;
+		pwms = <&pwm1 0 100000 0>;
+		enable-gpios= <&gpio1 6 GPIO_ACTIVE_HIGH>;
+		status = "disabled";
+	};
+};
+
+&iomuxc {
+	pinctrl_lcd0_vdd: lcd0vddgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI2_RXFS__GPIO4_IO21		0x0 /* LCD0_VDD_EN */
+		>;
+	};
+
+	pinctrl_lcd0_bklt: lcd0bkltgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_GPIO1_IO06__GPIO1_IO06		0x0 /* LCD0_BKLT_EN */
+		>;
+	};
+};