[PATCH v2 0/4] arm64: dts: additions for imx8mp-phyboard-pollux

[PATCH v2 0/4] arm64: dts: additions for imx8mp-phyboard-pollux

[Yannic Moog]

This series adds missing miscellaneous hardware description to the
respective device tree files as well as a bluetooth/wifi expansion
board.

- i2c3 (basis for camera overlays)
- missing supply voltages
- PEB-WLBT-05 expansion board

---
Changes in v2:
- improved wording of i2c3 commit description
- removed regulator-always-on and regulator-boot-on properties
- rebased
- Link to v1: https://lore.kernel.org/r/20251020-imx8mp-dts-additions-v1-0-ea9ac5652b8b@phytec.de

---
Stefan Riedmueller (1):
      arm64: dts: imx8mp-phyboard-pollux: Enable i2c3

Yannic Moog (3):
      arm64: dts: imx8mp-phyboard-pollux: add fan-supply
      arm64: dts: imx8mp-phycore-som: add spi-nor supply vcc
      arm64: dts: imx8mp-phyboard-pollux: add PEB-WLBT-05 expansion board

 arch/arm64/boot/dts/freescale/Makefile             |   3 +
 .../imx8mp-phyboard-pollux-peb-wlbt-05.dtso        | 108 +++++++++++++++++++++
 .../dts/freescale/imx8mp-phyboard-pollux-rdk.dts   |  31 ++++++
 .../boot/dts/freescale/imx8mp-phycore-som.dtsi     |   8 ++
 4 files changed, 150 insertions(+)
---
base-commit: 89d95dbad2a3857f06cb6002566bbdcbe53bbfef
change-id: 20251014-imx8mp-dts-additions-81fac0750e3c

Best regards,
-- 
Yannic Moog <y.moog@phytec.de>

[PATCH v2 1/4] arm64: dts: imx8mp-phyboard-pollux: add fan-supply

[Yannic Moog]

Add 5v regulator to gpio fan node.

Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Yannic Moog <y.moog@phytec.de>
---
 arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts | 1 +
 1 file changed, 1 insertion(+)

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 9687b4ded8f4c98fe68bcbeedcb5ea03434e27a3..6203e39bc01be476f16f5ac80b6365bce150ae37 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
@@ -31,6 +31,7 @@ fan0: fan {
 		compatible = "gpio-fan";
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_fan>;
+		fan-supply = <&reg_vcc_5v_sw>;
 		gpio-fan,speed-map = <0     0
 				      13000 1>;
 		gpios = <&gpio5 4 GPIO_ACTIVE_HIGH>;

-- 
2.43.0

[PATCH v2 2/4] arm64: dts: imx8mp-phycore-som: add spi-nor supply vcc

[Yannic Moog]

The spi flash on the SoM is missing its vcc supply definition. Add
missing regulator which supplies the flash with 1.8V.

Signed-off-by: Yannic Moog <y.moog@phytec.de>
---
 arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
index 88831c0fbb7be3db18910385e4e15691b1c74ef2..63adb1c4b3ebc9e1f588e8c7c00acf92f5a04e94 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
@@ -28,6 +28,13 @@ reg_vdd_io: regulator-vdd-io {
 		regulator-min-microvolt = <3300000>;
 		regulator-name = "VDD_IO";
 	};
+
+	reg_vdd_1v8: regulator-vdd-1v8 {
+		compatible = "regulator-fixed";
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "VDD_1V8";
+	};
 };
 
 &A53_0 {
@@ -83,6 +90,7 @@ som_flash: flash@0 {
 		spi-max-frequency = <80000000>;
 		spi-rx-bus-width = <4>;
 		spi-tx-bus-width = <1>;
+		vcc-supply = <&reg_vdd_1v8>;
 	};
 };
 

-- 
2.43.0

[PATCH v2 3/4] arm64: dts: imx8mp-phyboard-pollux: Enable i2c3

[Yannic Moog]

From: Stefan Riedmueller <s.riedmueller@phytec.de>

The i2c3 of the phyBOARD-Pollux is used on the CSI1 interface to connect
to imaging sensors. Thus define it so it can be easily enabled if
required.

Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Yannic Moog <y.moog@phytec.de>
---
 .../dts/freescale/imx8mp-phyboard-pollux-rdk.dts   | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)

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 6203e39bc01be476f16f5ac80b6365bce150ae37..7d34b820e3213a3832c5be47444d4e9c636a6202 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
@@ -228,6 +228,15 @@ led-3 {
 	};
 };
 
+&i2c3 {
+	clock-frequency = <400000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c3>;
+	pinctrl-1 = <&pinctrl_i2c3_gpio>;
+	sda-gpios = <&gpio5 18 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	scl-gpios = <&gpio5 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+};
+
 &ldb_lvds_ch1 {
 	remote-endpoint = <&panel1_in>;
 };
@@ -442,6 +451,20 @@ MX8MP_IOMUXC_I2C2_SDA__GPIO5_IO17	0x1e2
 		>;
 	};
 
+	pinctrl_i2c3: i2c3grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C3_SCL__I2C3_SCL		0x400001c2
+			MX8MP_IOMUXC_I2C3_SDA__I2C3_SDA		0x400001c2
+		>;
+	};
+
+	pinctrl_i2c3_gpio: i2c3gpiogrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_I2C3_SCL__GPIO5_IO18	0x1e2
+			MX8MP_IOMUXC_I2C3_SDA__GPIO5_IO19	0x1e2
+		>;
+	};
+
 	pinctrl_lvds1: lvds1grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_SD2_WP__GPIO2_IO20		0x12

-- 
2.43.0

[PATCH v2 4/4] arm64: dts: imx8mp-phyboard-pollux: add PEB-WLBT-05 expansion board

[Yannic Moog]

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@phytec.de>
---
 arch/arm64/boot/dts/freescale/Makefile             |   3 +
 .../imx8mp-phyboard-pollux-peb-wlbt-05.dtso        | 108 +++++++++++++++++++++
 .../dts/freescale/imx8mp-phyboard-pollux-rdk.dts   |   7 ++
 3 files changed, 118 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index f30d3fd724d0ce6b38f7bef10e3970ac34f70f4a..20b5f97671ddc5462493f3c90bda64d06476ca72 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -243,12 +243,15 @@ 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-prt8ml.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-basic.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revb-hdmi.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..90ec73068a6deb71554b62be951f3010a4e8c5c5 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 +119,13 @@ reg_vcc_3v3_sw: regulator-vcc-3v3-sw {
 		regulator-max-microvolt = <3300000>;
 	};
 
+	reg_vcc_1v8_exp_con: regulator-vcc-1v8 {
+		compatible = "regulator-fixed";
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "VCC_1V8_EXP_CON";
+	};
+
 	thermal-zones {
 		soc-thermal {
 			trips {

-- 
2.43.0

Re: [PATCH v2 0/4] arm64: dts: additions for imx8mp-phyboard-pollux

[Shawn Guo]

On Fri, Dec 05, 2025 at 10:33:24AM +0100, Yannic Moog wrote:
> This series adds missing miscellaneous hardware description to the
> respective device tree files as well as a bluetooth/wifi expansion
> board.
> 
> - i2c3 (basis for camera overlays)
> - missing supply voltages
> - PEB-WLBT-05 expansion board
> 
> ---
> Changes in v2:
> - improved wording of i2c3 commit description
> - removed regulator-always-on and regulator-boot-on properties
> - rebased
> - Link to v1: https://lore.kernel.org/r/20251020-imx8mp-dts-additions-v1-0-ea9ac5652b8b@phytec.de
> 
> ---
> Stefan Riedmueller (1):
>       arm64: dts: imx8mp-phyboard-pollux: Enable i2c3
> 
> Yannic Moog (3):
>       arm64: dts: imx8mp-phyboard-pollux: add fan-supply
>       arm64: dts: imx8mp-phycore-som: add spi-nor supply vcc
>       arm64: dts: imx8mp-phyboard-pollux: add PEB-WLBT-05 expansion board

Applied all, thanks!