[D18][MV] Add overlay for Modular Vision carrier board

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

@@ -37,6 +37,7 @@ dtbo-$(CONFIG_ARCH_MXC) += \
 	seco-imx8mm-c61-video-sn65dsi84.dtbo\
 	seco-imx8mm-c61-video-sn65dsi86.dtbo\
 	seco-imx8mp-d18-b79.dtbo\
+	seco-imx8mp-d18-mv.dtbo\
 	seco-imx8mp-d18-hdmi.dtbo\
 	seco-imx8mp-d18-edp.dtbo\
 	seco-imx8mp-d18-lvds-fhd.dtbo\

arch/arm64/boot/dts/seco/overlays/seco-imx8mp-d18-mv-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>
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	model = "SECO Modular Vision with i.MX8MPlus LPDDR4 D18";
+	compatible = "fsl,imx8mp-evk", "seco,imx8mp-d18", "fsl,imx8mp";
+
+/*  __________________________________________________________________________
+ * |                                                                          |
+ * |                      CARRIER BOARD Modular Vision                        |
+ * |__________________________________________________________________________|
+ */
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			reg_audio: regulator-soc-audio {
+				compatible = "regulator-fixed";
+				regulator-name = "tas2505_supply";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+		};
+	};
+
+	fragment@1 {
+		target-path = "/";
+		__overlay__ {
+			sound {
+				status                            = "okay";
+				compatible                        = "simple-audio-card";
+				simple-audio-card,format          = "i2s";
+				simple-audio-card,name            = "tlv-audio";
+				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>;
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&usb_dwc3_0>;
+		__overlay__ {
+			role-switch-default-mode = "host";
+		};
+	};
+
+	fragment@3 {
+		target = <&sai2>;
+		__overlay__ {
+			assigned-clocks = <&clk IMX8MP_CLK_SAI2>;
+			assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL2_OUT>;
+			assigned-clock-rates = <22579200>;
+			status = "okay";
+		};
+	};
+
+	fragment@4 {
+		target = <&usdhc2>;
+		__overlay__ {
+			/delete-property/ wp-gpios;
+		};
+	};
+
+	fragment@5 {
+		target = <&i2c2>;
+		__overlay__ {
+			clock-frequency = <400000>;
+		};
+	};
+
+	fragment@6 {
+		target = <&i2c3>;
+		__overlay__ {
+			clock-frequency = <400000>;
+		};
+	};
+
+	fragment@7 {
+		target = <&i2c5>;
+		__overlay__ {
+			tlvcodec: tas2505@18 {
+				#sound-dai-cells = <0>;
+				status = "okay";
+				compatible = "ti,tas2505";
+				reg = <0x18>;
+				ldoin-supply = <&reg_audio>;
+				iov-supply = <&reg_audio>;
+				av-supply = <&reg_audio>;
+				dv-supply = <&reg_audio>;
+				clocks = <&clk IMX8MP_CLK_SAI2_ROOT>;
+				clock-names = "mclk";
+				route-on-lineout;
+			};
+
+			/*
+			 * @TODO: The interrupts lead to several kernel panics
+			 * at the moment. Fix the panics and reenable the
+			 * interrupts.
+			 */
+			gpio_expander: gpio-expander@43 {
+				compatible = "psc,pi4io";
+				reg = <0x43>;
+				/*
+				interrupt-controller;
+				interrupt-parent = <&gpio1>;
+				interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
+				#interrupt-cells = <2>;
+				*/
+				gpio-controller;
+				#gpio-cells = <2>;
+				/*
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_gpio_exp>;
+				reset-gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
+				*/
+				status = "okay";
+			};
+
+			temp: lm75b@49 {
+				compatible = "national,lm75b";
+				reg = <0x49>;
+			};
+
+			eeprom: 24c64@50 {
+				compatible = "atmel,24c64";
+				reg = <0x50>;
+				pagesize = <32>;
+			};
+		};
+	};
+
+	/*
+	 * We have a race-condition when using
+	 * HD mode for RS485 (the DE pin is routed
+	 * via the PCA6416, which is a slow bus
+	 * GPIO chip). Only FD mode works reliable,
+	 * which is why we enable the DE pin per
+	 * default for now.
+	 */
+	fragment@8 {
+		target = <&pca6416>;
+		__overlay__ {
+			rs485_de {
+				gpio-hog;
+				gpios = <1 GPIO_ACTIVE_HIGH>;
+				output-high;
+			};
+		};
+	};
+
+};