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Message-ID: <20251020-imx8mp-dts-additions-v1-4-ea9ac5652b8b@phytec.de>
Date: Mon, 20 Oct 2025 15:11:25 +0200
From: Yannic Moog <y.moog@...tec.de>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, "Sascha
 Hauer" <s.hauer@...gutronix.de>, Pengutronix Kernel Team
	<kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>
CC: <upstream@...ts.phytec.de>, <devicetree@...r.kernel.org>,
	<imx@...ts.linux.dev>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, Yannic Moog <y.moog@...tec.de>
Subject: [PATCH 4/4] arm64: dts: imx8mp-phyboard-pollux: add PEB-WLBT-05
 expansion board

PEB-WLBT-05 is an expansion board that provides WIFI and Bluetooth
functionality. It features the Ezurio Sterling LWB module [1].
Add missing regulator to baseboard dts.

[1] https://www.ezurio.com/wireless-modules/wifi-modules-bluetooth/sterling-lwb-24-ghz-wifi-4-bt-51-module

Signed-off-by: Yannic Moog <y.moog@...tec.de>
---
 arch/arm64/boot/dts/freescale/Makefile             |   3 +
 .../imx8mp-phyboard-pollux-peb-wlbt-05.dtso        | 108 +++++++++++++++++++++
 .../dts/freescale/imx8mp-phyboard-pollux-rdk.dts   |   9 ++
 3 files changed, 120 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index d77e6ab8e46fe71ae41087a3b65ca64cc50e2e76..606a25f3323dab51ddff7bab686e69a8d48610a3 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -237,12 +237,15 @@ imx8mp-phyboard-pollux-peb-av-10-ph128800t006-dtbs += imx8mp-phyboard-pollux-rdk
 imx8mp-phyboard-pollux-ph128800t006-dtbs += imx8mp-phyboard-pollux-rdk.dtb \
 	imx8mp-phyboard-pollux-ph128800t006.dtbo
 imx8mp-phyboard-pollux-rdk-no-eth-dtbs += imx8mp-phyboard-pollux-rdk.dtb imx8mp-phycore-no-eth.dtbo
+imx8mp-phyboard-pollux-wlbt-dtbs += imx8mp-phyboard-pollux-rdk.dtb \
+	imx8mp-phyboard-pollux-peb-wlbt-05.dtbo
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-etml1010g3dra.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-peb-av-10.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-peb-av-10-etml1010g3dra.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-peb-av-10-ph128800t006.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-ph128800t006.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-rdk-no-eth.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-wlbt.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-basic.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revb-hdmi.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revb-lt6.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-wlbt-05.dtso b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-wlbt-05.dtso
new file mode 100644
index 0000000000000000000000000000000000000000..0e98f4d942716e57f5bc1567924460b618eb0930
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-wlbt-05.dtso
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (C) 2025 PHYTEC Messtechnik GmbH
+ */
+
+#include <dt-bindings/clock/imx8mp-clock.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include "imx8mp-pinfunc.h"
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+	wlbt_clock: clock-32768 {
+		compatible = "fixed-clock";
+		clock-accuracy = <20000>;
+		clock-frequency = <32768>;
+		clock-output-names = "WIFIBT_SLOW_CLK";
+		#clock-cells = <0>;
+	};
+
+	usdhc1_pwrseq: pwr-seq {
+		compatible = "mmc-pwrseq-simple";
+		post-power-on-delay-ms = <250>;
+		reset-gpios = <&gpio5 5 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&iomuxc {
+	pinctrl_uart3: uart3grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_RESET_B__UART3_DCE_RTS	0x140	/* RTS */
+			MX8MP_IOMUXC_SD1_STROBE__UART3_DCE_CTS	0x140	/* CTS */
+			MX8MP_IOMUXC_UART3_RXD__UART3_DCE_RX	0x140	/* RX */
+			MX8MP_IOMUXC_UART3_TXD__UART3_DCE_TX	0x140	/* TX */
+		>;
+	};
+
+	pinctrl_bluetooth: bluetoothgrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_DATA4__GPIO2_IO06	0x106	/* BT_DEV_WAKE_EXP */
+			MX8MP_IOMUXC_SD1_DATA5__GPIO2_IO07	0x106	/* BT_REG_ON_EXP */
+			MX8MP_IOMUXC_SD1_DATA7__GPIO2_IO09	0x106	/* BT_HOST_WAKE_EXP */
+		>;
+	};
+
+	pinctrl_usdhc1: usdhc1grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK	0x190	/* SDIO_CLK */
+			MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD	0x1d0	/* SDIO_CMD */
+			MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0	0x1d0	/* SDIO_D0 */
+			MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1	0x1d0	/* SDIO_D1 */
+			MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2	0x1d0	/* SDIO_D2 */
+			MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3	0x1d0	/* SDIO_D3 */
+		>;
+	};
+
+	pinctrl_wifi: wifigrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SPDIF_EXT_CLK__GPIO5_IO05	0x106	/* WL_REG_ON_EXP */
+		>;
+	};
+};
+
+&uart3 {
+	assigned-clocks = <&clk IMX8MP_CLK_UART3>;
+	assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_80M>;
+	pinctrl-0 = <&pinctrl_uart3>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm43438-bt";
+		pinctrl-0 = <&pinctrl_bluetooth>;
+		pinctrl-names = "default";
+		clock-names = "lpo";
+		clocks = <&wlbt_clock>;
+		device-wakeup-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>;
+		host-wakeup-gpios = <&gpio2 9 GPIO_ACTIVE_HIGH>;
+		max-speed = <3000000>;
+		shutdown-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>;
+		vbat-supply = <&reg_vcc_3v3_sw>;
+		vddio-supply = <&reg_vcc_1v8_exp_con>;
+	};
+};
+
+&usdhc1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	pinctrl-0 = <&pinctrl_usdhc1>;
+	pinctrl-names = "default";
+	bus-width = <4>;
+	max-frequency = <50000000>;
+	mmc-pwrseq = <&usdhc1_pwrseq>;
+	non-removable;
+	vmmc-supply = <&reg_vcc_3v3_sw>;
+	status = "okay";
+
+	wifi@1 {
+		compatible = "brcm,bcm4329-fmac";
+		reg = <1>;
+		pinctrl-0 = <&pinctrl_wifi>;
+		pinctrl-names = "default";
+		reset-gpios = <&gpio5 5 GPIO_ACTIVE_LOW>;
+	};
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
index 7d34b820e3213a3832c5be47444d4e9c636a6202..9e25ce1d466b1174c60d2bb350339ca5d68cc025 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
@@ -119,6 +119,15 @@ reg_vcc_3v3_sw: regulator-vcc-3v3-sw {
 		regulator-max-microvolt = <3300000>;
 	};
 
+	reg_vcc_1v8_exp_con: regulator-vcc-1v8 {
+		compatible = "regulator-fixed";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "VCC_1V8_EXP_CON";
+	};
+
 	thermal-zones {
 		soc-thermal {
 			trips {

-- 
2.51.0

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