ARM: dts: imx6ul-var-som: add proper Wifi and Bluetooth support

Add proper support for the optional Wifi and Bluetooth configuration on
VAR-SOM-6UL so that it works out of the box, without any custom scripts.
The Wifi/BT module support is mutually exclusive with SD card interface.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>

arch/arm/boot/dts/nxp/imx/Makefile

@@ -339,6 +339,7 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
 	imx6ul-tx6ul-0011.dtb \
 	imx6ul-tx6ul-mainboard.dtb \
 	imx6ul-var-som-concerto.dtb \
+	imx6ul-var-som-concerto-full.dtb \
 	imx6ull-14x14-evk.dtb \
 	imx6ull-colibri-aster.dtb \
 	imx6ull-colibri-emmc-aster.dtb \
@@ -378,6 +379,7 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
 	imx6ull-tqma6ull2l-mba6ulx.dtb \
 	imx6ull-uti260b.dtb \
 	imx6ull-var-som-concerto.dtb \
+	imx6ull-var-som-concerto-full.dtb \
 	imx6ulz-14x14-evk.dtb \
 	imx6ulz-bsh-smm-m2.dtb
 dtb-$(CONFIG_SOC_IMX7D) += \

arch/arm/boot/dts/nxp/imx/imx6ul-var-som-common.dtsi

@@ -19,6 +19,14 @@ memory@80000000 {
 		reg = <0x80000000 0x20000000>;
 	};
 
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "3P3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
 	reg_gpio_dvfs: reg-gpio-dvfs {
 		compatible = "regulator-gpio";
 		regulator-min-microvolt = <1300000>;
@@ -68,9 +76,6 @@ ethphy0: ethernet-phy@1 {
 };
 
 &iomuxc {
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_hog>;
-
 	pinctrl_enet1: enet1grp {
 		fsl,pins = <
 			MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN	0x1b0b0
@@ -97,13 +102,6 @@ MX6UL_PAD_GPIO1_IO07__ENET1_MDC		0x1b0b0
 		>;
 	};
 
-	pinctrl_hog: hoggrp {
-		fsl,pins = <
-			MX6UL_PAD_SNVS_TAMPER4__GPIO5_IO04	0x1b0b0	/* BT Enable */
-			MX6UL_PAD_SNVS_TAMPER6__GPIO5_IO06	0x03029	/* WLAN Enable */
-		>;
-	};
-
 	pinctrl_i2c1: i2c1grp {
 		fsl,pins = <
 			MX6UL_PAD_CSI_PIXCLK__I2C1_SCL		0x4001b8b0

arch/arm/boot/dts/nxp/imx/imx6ul-var-som-concerto-full.dts

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Support for Variscite MX6 Concerto Carrier board with the VAR-SOM-6UL
+ * Variscite SoM mounted on it (6UL CPU variant).
+ *
+ * Copyright 2026 Dimonoff
+ */
+
+/dts-v1/;
+
+#include "imx6ul-var-som.dtsi"
+#include "imx6ul-var-som-concerto-common.dtsi"
+#include "imx6ul-var-som-wifi.dtsi"
+
+/ {
+	model = "Variscite VAR-SOM-6UL Concerto Board (6UL CPU)";
+	compatible = "variscite,mx6ulconcerto", "variscite,var-som-imx6ul", "fsl,imx6ul";
+};

arch/arm/boot/dts/nxp/imx/imx6ul-var-som-wifi.dtsi

@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Support optional Wifi/Bluetooth on Variscite VAR-SOM-6UL module.
+ *
+ * Copyright 2019-2024 Variscite Ltd.
+ * Copyright 2026 Dimonoff
+ */
+
+/ {
+	reg_sd1_vmmc: regulator_sd1_vmmc {
+		compatible = "regulator-fixed";
+		regulator-name = "VMMC1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio5 2 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		startup-delay-us = <10000>;
+	};
+
+	usdhc1_pwrseq: usdhc1-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_brcm_wifi>;
+		reset-gpios = <&gpio5 6 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&iomuxc {
+	pinctrl_32k_clk: 32kclkgrp {
+		/*
+		 * For TP option, an additional oscillator is assembled on the
+		 * SOM to provide 32 kHz to the WiFi module. Without TP option,
+		 * this pin is configured to provide the 32 KHz clock to the
+		 * WiFi module.
+		 */
+		fsl,pins = <
+			MX6UL_PAD_GPIO1_IO03__OSC32K_32K_OUT	0x03029
+		>;
+	};
+};
+
+&tsc {
+	status = "disabled";
+};
+
+/* Bluetooth UART */
+&uart2 {
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_brcm_bt>;
+		shutdown-gpios = <&gpio5 4 GPIO_ACTIVE_HIGH>;
+		vbat-supply = <&reg_3p3v>;
+		vddio-supply = <&reg_3p3v>;
+	};
+};
+
+&usdhc1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-0 = <&pinctrl_usdhc1>, <&pinctrl_32k_clk>;
+	pinctrl-1 = <&pinctrl_usdhc1_100mhz>, <&pinctrl_32k_clk>;
+	pinctrl-2 = <&pinctrl_usdhc1_200mhz>, <&pinctrl_32k_clk>;
+	no-1-8-v;
+	non-removable;
+	mmc-pwrseq = <&usdhc1_pwrseq>;
+	vmmc-supply = <&reg_sd1_vmmc>;
+	status = "okay";
+
+	brcmf: wifi@1 {
+		compatible = "brcm,bcm4329-fmac"; /* LWB option: Sterling LWB5 */
+		reg = <1>;
+	};
+};

arch/arm/boot/dts/nxp/imx/imx6ul-var-som.dtsi

@@ -15,3 +15,18 @@ / {
 	model = "Variscite VAR-SOM-6UL module";
 	compatible = "variscite,var-som-imx6ul", "fsl,imx6ul";
 };
+
+&iomuxc {
+	pinctrl_brcm_bt: brcm-bt-grp {
+		fsl,pins = <
+			MX6UL_PAD_SNVS_TAMPER4__GPIO5_IO04	0x1b0b0	/* BT_REG_ON (BT_EN) */
+		>;
+	};
+
+	pinctrl_brcm_wifi: brcm-wifi-grp {
+		fsl,pins = <
+			MX6UL_PAD_SNVS_TAMPER2__GPIO5_IO02	0x1b0b0	/* WL_PWR (WIFI_PWR 5G) */
+			MX6UL_PAD_SNVS_TAMPER6__GPIO5_IO06	0x1b0b0	/* WL_REG_ON (WIFI_EN) */
+		>;
+	};
+};

arch/arm/boot/dts/nxp/imx/imx6ull-var-som-concerto-full.dts

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Support for Variscite MX6 Concerto Carrier board with the VAR-SOM-6UL
+ * Variscite SoM mounted on it (6ULL CPU variant).
+ *
+ * Copyright 2026 Dimonoff
+ */
+
+/dts-v1/;
+
+#include "imx6ull-var-som.dtsi"
+#include "imx6ul-var-som-concerto-common.dtsi"
+#include "imx6ul-var-som-wifi.dtsi"
+
+/ {
+	model = "Variscite VAR-SOM-6UL Concerto Board (6ULL CPU)";
+	compatible = "variscite,mx6ullconcerto", "variscite,var-som-imx6ull", "fsl,imx6ull";
+};

arch/arm/boot/dts/nxp/imx/imx6ull-var-som.dtsi

@@ -13,3 +13,18 @@ / {
 	model = "Variscite VAR-SOM-6UL module";
 	compatible = "variscite,var-som-imx6ull", "fsl,imx6ull";
 };
+
+&iomuxc {
+	pinctrl_brcm_bt: brcm-bt-grp {
+		fsl,pins = <
+			MX6ULL_PAD_SNVS_TAMPER4__GPIO5_IO04	0x1b0b0	/* BT_REG_ON (BT_EN) */
+		>;
+	};
+
+	pinctrl_brcm_wifi: brcm-wifi-grp {
+		fsl,pins = <
+			MX6ULL_PAD_SNVS_TAMPER2__GPIO5_IO02	0x1b0b0	/* WL_PWR (WIFI_PWR 5G) */
+			MX6ULL_PAD_SNVS_TAMPER6__GPIO5_IO06	0x1b0b0	/* WL_REG_ON (WIFI_EN) */
+		>;
+	};
+};