Add support of Myon 2 i.MX8MM module + ConXM

Ported from seco-ne/kernel/linux-imx-kuk!442

arch/arm64/boot/dts/seco/Makefile

@@ -11,6 +11,7 @@ dtb-$(CONFIG_ARCH_MXC) += seco-imx8mq-c12.dtb\
                           seco-imx8mp-d18.dtb\
                           seco-imx8qxp-c57.dtb\
                           seco-imx8mm-c72.dtb\
+                          seconorth-myon2-conxm-hdmi.dtb\
 
 dts-dirs        += overlays
 subdir-y        := $(dts-dirs)

arch/arm64/boot/dts/seco/include/conxm.dtsi

+/*
+ * Copyright 2024 SECO NE GmbH
+ *
+ */
+
+#ifndef NOBACKLIGHT_PWM
+#define NOBACKLIGHT_PWM 0
+#endif
+
+#if USB1_OTG_FUNC != OTG_SLAVE
+#define PADTYPE_USB_SW_SEL     PAD_GPIO_PD
+//#define RSRVD_USB_SWSEL        KK_RSRVD_OUT_HI
+#else
+#define PADTYPE_USB_SW_SEL     PAD_GPIO_PU
+//#define RSRVD_USB_SWSEL        KK_RSRVD_OUT_LO
+#endif
+
+&iomuxc {
+
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_hog>;
+
+	pinctrl_hog: hoggrp {
+	fsl,pins = <
+			MYON2_HOGGRP_COMMON
+				PIN1_73_GPIO	PAD_GPIO_PU		/* CAM Pwdn */
+				PIN1_71_GPIO	PAD_GPIO_PU		/* CAM nRST */
+				PIN1_20_GPIO	PADTYPE_USB_SW_SEL	/* USB SW SEL */
+#if NOBACKLIGHT_PWM
+				PIN0_74_GPIO	PAD_GPIO_PU		/* GPIO BL PWM */
+#endif
+		>;
+	};
+
+	pinctrl_gpio_keys: gpio_keys {
+	    fsl,pins = < PIN1_6_GPIO		PAD_GPIO_PU >;	/* PowerButton SODIMM Pin 122 */
+	};
+
+	pinctrl_mipi_dsi_en: mipi_dsi_en {
+		fsl,pins = < PIN1_62_GPIO	PAD_GPIO_PU >;
+	};
+
+	pinctrl_display_enable: display-enable 	{
+		fsl,pins = < PIN1_62_GPIO	PAD_GPIO >;	/* DISPLAY_ENABLE */
+	};
+
+#if ! NOBACKLIGHT_PWM
+	pinctrl_backlight_pwm1: pwm-backlight {
+		fsl,pins = < PIN0_74_PWM1_OUT	PAD_GPIO >;	/* BACKLIGHT_PWM */
+	};
+#endif
+
+	pinctrl_hdmi_int: hdmi-int 	{
+		fsl,pins = < PIN1_5_GPIO	PAD_GPIO >;	/* HDMI_INT */
+	};
+};
+
+/ {
+	reg_vin_fused: vin_fused {
+		compatible = "regulator-fixed";
+		regulator-name = "VIN_FUSED";
+		regulator-min-microvolt = <12000000>;
+		/* max	should be 24V but the fixed regulator driver does
+		not allow a range here */
+		regulator-max-microvolt = <12000000>;
+		regulator-always-on;
+	};
+
+	reg_board_5v: 5v {
+		compatible = "regulator-fixed";
+		regulator-name = "+5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		vin-supply = <&reg_vin_fused>;
+	};
+
+	reg_3v3: 3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "+3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		vin-supply = <&reg_vin_fused>;
+	};
+
+	reg_display_pwr: display-pwr {
+		compatible = "regulator-fixed";
+		regulator-name = "DISPLAY PWCTRL";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_display_enable>;
+		gpio = <pin1_62_gpio 0>;
+		enable-active-high;
+		regulator-always-on;
+		vin-supply = <&reg_3v3>;
+	};
+
+	reg_usbhost_pwr: usbhost-pwr {
+		compatible = "regulator-fixed";
+		regulator-name = "USBHOST PWR";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		vin-supply = <&reg_board_5v>;
+	};
+
+	reg_usbotg_pwr: usbotg-pwr {
+		compatible = "regulator-fixed";
+		regulator-name = "USBOTG PWR";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		vin-supply = <&reg_board_5v>;
+	};
+
+#if 0
+	reserved@board {
+		compatible	= "kk,trizeps7-reserved";
+#if NOBACKLIGHT_PWM
+		kk,gpio-names	= "Cam-nRST","Cam-PWDN","nRESET_OUT", "USB_SWSEL-HOST", "PWM-PIN", "BACKLIGHT";
+#else
+		kk,gpio-names	= "Cam-nRST","Cam-PWDN","nRESET_OUT", "USB_SWSEL-HOST";
+#endif
+		kk,os-gpios	= <
+			pin1_71_gpio   (KK_RSRVD_OUT_HI)                                     /* Cam-nRST  gpio1 6  */
+			pin1_73_gpio   (KK_RSRVD_OUT_HI)                                     /* Cam-PWDN  gpio1 3  */
+			pin0_32_gpio   (KK_RSRVD_OUT_HI|KK_RSRVD_EXPORT|KK_RSRVD_REQUEST(0)) /* nRESET_OUT  */
+			pin1_20_gpio   (RSRVD_USB_SWSEL|KK_RSRVD_EXPORT|KK_RSRVD_REQUEST(1)) /* USB SW SEL  */
+#if NOBACKLIGHT_PWM
+			pin0_74_gpio   (KK_RSRVD_OUT_HI|KK_RSRVD_EXPORT|KK_RSRVD_REQUEST(2)) /* BL PWM GPIO1 1  */
+			pin0_76_gpio   (KK_RSRVD_OUT_HI|KK_RSRVD_EXPORT|KK_RSRVD_REQUEST(2)) /* BACKLIGHT_ENABLE gpio3 22 */
+#endif
+		>;
+	};
+#endif
+
+	gpio-keys {
+		compatible = "gpio-keys1";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_keys>;
+		power { /* Reconfig to power key in Android*/
+			label = "Power Button";
+			gpios = <pin1_6_gpio GPIO_ACTIVE_LOW>;
+			linux,code = <116>; /* KEY_POWER */
+			gpio-key,wakeup;
+		};
+	};
+};
+
+&gpio1 {
+#if NOBACKLIGHT_PWM
+	gpio-1 {
+		gpio-hog;
+		gpios = <1 0>;
+		line-name = "PWM-PIN";
+		output-high;
+	};
+#endif
+	gpio-3 {
+		gpio-hog;
+		gpios = <3 0>;
+		line-name = "Cam-PWDN";
+		output-high;
+	};
+	gpio-6 {
+		gpio-hog;
+		gpios = <6 0>;
+		line-name = "Cam-nRST";
+		output-high;
+	};
+};
+
+&gpio3 {
+	gpio-14 {
+		gpio-hog;
+		gpios = <14 0>;
+		line-name = "nRESET_OUT";
+		output-high;
+	};
+	gpio-15 {
+		gpio-hog;
+		gpios = <15 0>;
+		line-name = "USB_SWSEL-HOST";
+#if USB1_OTG_FUNC != OTG_SLAVE
+		output-high;
+#else
+		output-low;
+#endif
+	};
+#if NOBACKLIGHT_PWM
+	gpio-22 {
+		gpio-hog;
+		gpios = <22 0>;
+		line-name = "BACKLIGHT";
+		output-high;
+	};
+#endif
+};
+
+
+#if ! NOBACKLIGHT_PWM
+&pwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_backlight_pwm1>;
+	status = "okay";
+};
+#endif
+
+&backlight {
+	status = "okay";
+};
+
+&i2c2 {
+};
+
+&usbotg1 {
+	disable-over-current;
+#if USB1_OTG_FUNC == OTG_HOST
+//#warning "Set USB1 to HOST"
+	dr_mode = "host";
+#else
+#if USB1_OTG_FUNC == OTG_OTG
+//#warning "Set USB1 to OTG"
+	dr_mode = "otg";
+#else
+//#warning "Set USB1 to peripheral"
+	dr_mode = "peripheral";
+#endif
+#endif
+};
+
+
+#if !defined (__DTS_IMX8MN_PINFUNC_H)
+&usbotg2 {
+	disable-over-current;
+	disabled;
+};
+#endif
+
+
+
+/************************************************************************/
+
+#if defined (__DTS_MYON2_PINFUNC_H) || defined (__DTS_MYON2NANO_PINFUNC_H)
+
+&mipi_dsi {
+	status = "okay";
+
+	port@1 {
+		mipi_dsi_bridge_out: endpoint {
+			remote-endpoint = <&adv7533_in>;
+			attach-bridge;
+		};
+	};
+};
+
+&i2c2 {
+	adv_bridge: adv7533@39 {
+		compatible = "adi,adv7533";
+		reg = <0x39>;
+
+		interrupt-parent = <pin1_5_gpio_parent>;
+		interrupts = <pin1_5_gpio_pin IRQ_TYPE_LEVEL_LOW>;
+
+		adi,ignore-edid;
+		adi,dsi-lanes = <4>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_hdmi_int>;
+		status = "okay";
+
+		port {
+			adv7533_in: endpoint {
+				remote-endpoint = <&mipi_dsi_bridge_out>;
+			};
+		};
+	};
+};
+
+#endif
+/************************************************************************/

arch/arm64/boot/dts/seco/seconorth-myon2-conxm-hdmi.dts

+/*
+ * Copyright 2024 SECO NE GmbH
+ *
+ */
+
+/dts-v1/;
+
+// Add defines here, which control behaviour of .dtsi:
+#define  OTG_HOST                0
+#define  OTG_SLAVE               1
+#define  OTG_OTG                 2
+#define  USB1_OTG_ID_PIN_PD      1
+
+//#define  USB1_OTG_FUNC           OTG_OTG
+#define  USB1_OTG_FUNC           OTG_HOST
+
+#include "include/myon2.dtsi"
+#include "include/conxm.dtsi"
+/* #include "adv7533.dtsi" */
+
+/ {
+	model      = "SECO NE GmbH ConXM-HDMI i.MX8MM Myon2";
+	compatible = "kk,myon2","kk,trizeps8", "kk,trizeps8mini", "fsl,imx8mm-evk", "fsl,imx8mm";
+
+	chosen {
+		stdout-path = &uart1;
+	};
+};
+
+&uart2 {
+	status = "okay";
+};

[Dietmar Muscholik]

Better take support for myon2 from seco-ne/kernel/linux-imx-kuk!561 (merged). This is much more clean.