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

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

[Yannic Moog]

Depends on [1]

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

[1] https://lore.kernel.org/r/20251020-imx8mp-pollux-display-overlays-v6-0-c65ceac56c53@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   |  33 +++++++
 .../boot/dts/freescale/imx8mp-phycore-som.dtsi     |  10 ++
 4 files changed, 154 insertions(+)
---
base-commit: d95b54b0f1aeb6a2bf8b22836181ea8103629f87
change-id: 20251014-imx8mp-dts-additions-81fac0750e3c

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

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

[Yannic Moog]

Add 5v regulator to gpio fan node.

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>;

-- 
2.51.0

[PATCH 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 | 10 ++++++++++
 1 file changed, 10 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..d370e2a3a00c5e3e91a606ac0fbed30cf5e6f9b2 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
@@ -28,6 +28,15 @@ reg_vdd_io: regulator-vdd-io {
 		regulator-min-microvolt = <3300000>;
 		regulator-name = "VDD_IO";
 	};
+
+	reg_vdd_1v8: regulator-vdd-1v8 {
+		compatible = "regulator-fixed";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "VDD_1V8";
+	};
 };
 
 &A53_0 {
@@ -83,6 +92,7 @@ som_flash: flash@0 {
 		spi-max-frequency = <80000000>;
 		spi-rx-bus-width = <4>;
 		spi-tx-bus-width = <1>;
+		vcc-supply = <&reg_vdd_1v8>;
 	};
 };
 

-- 
2.51.0

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

[Yannic Moog]

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

On the phyBOARD-Pollux the i2c3 node 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>
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

-- 
2.51.0

[PATCH 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   |   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

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

[Frank Li]

On Mon, Oct 20, 2025 at 03:11:22PM +0200, Yannic Moog wrote:
> Add 5v regulator to gpio fan node.
>
> Signed-off-by: Yannic Moog <y.moog@phytec.de>
> ---
Reviewed-by: Frank Li <Frank.Li@nxp.com>

>  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>;
>
> --
> 2.51.0
>

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

[Frank Li]

On Mon, Oct 20, 2025 at 03:11:23PM +0200, Yannic Moog wrote:
> 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 | 10 ++++++++++
>  1 file changed, 10 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..d370e2a3a00c5e3e91a606ac0fbed30cf5e6f9b2 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
> @@ -28,6 +28,15 @@ reg_vdd_io: regulator-vdd-io {
>  		regulator-min-microvolt = <3300000>;
>  		regulator-name = "VDD_IO";
>  	};
> +
> +	reg_vdd_1v8: regulator-vdd-1v8 {
> +		compatible = "regulator-fixed";
> +		regulator-always-on;
> +		regulator-boot-on;

Needn't regulator-always-on and regulator-boot-on because it is refered
by flash@0.

Frank

> +		regulator-max-microvolt = <1800000>;
> +		regulator-min-microvolt = <1800000>;
> +		regulator-name = "VDD_1V8";
> +	};
>  };
>
>  &A53_0 {
> @@ -83,6 +92,7 @@ som_flash: flash@0 {
>  		spi-max-frequency = <80000000>;
>  		spi-rx-bus-width = <4>;
>  		spi-tx-bus-width = <1>;
> +		vcc-supply = <&reg_vdd_1v8>;
>  	};
>  };
>
>
> --
> 2.51.0
>

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

[Frank Li]

On Mon, Oct 20, 2025 at 03:11:24PM +0200, Yannic Moog wrote:
> From: Stefan Riedmueller <s.riedmueller@phytec.de>
>
> On the phyBOARD-Pollux the i2c3 node is used on the CSI1 interface to
> connect to imaging sensors. Thus define it so it can be easily enabled if
> required.
Nit:

The i2c3 of the phyBOARD-Pollux is used ...

Reviewed-by: Frank Li <Frank.Li@nxp.com>

>
> Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
> Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
> 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
>
> --
> 2.51.0
>

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

[Frank Li]

On Mon, Oct 20, 2025 at 03:11:25PM +0200, Yannic Moog wrote:
> 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   |   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-always-on and regulator-boot-on is not neccesary.

Frank
> +		regulator-max-microvolt = <1800000>;
> +		regulator-min-microvolt = <1800000>;
> +		regulator-name = "VCC_1V8_EXP_CON";
> +	};
> +
>  	thermal-zones {
>  		soc-thermal {
>  			trips {
>
> --
> 2.51.0
>

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

[Yannic Moog]

On Mon, 2025-10-20 at 11:36 -0400, Frank Li wrote:
> On Mon, Oct 20, 2025 at 03:11:23PM +0200, Yannic Moog wrote:
> > 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 | 10 ++++++++++
> >  1 file changed, 10 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..d370e2a3a00c5e3e91a606ac0fbed30cf5e6f9b2 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
> > @@ -28,6 +28,15 @@ reg_vdd_io: regulator-vdd-io {
> >  		regulator-min-microvolt = <3300000>;
> >  		regulator-name = "VDD_IO";
> >  	};
> > +
> > +	reg_vdd_1v8: regulator-vdd-1v8 {
> > +		compatible = "regulator-fixed";
> > +		regulator-always-on;
> > +		regulator-boot-on;
> 
> Needn't regulator-always-on and regulator-boot-on because it is refered
> by flash@0.

I added these properties to make it clear for the reader that this regulator is not Software
controlled and should not be disabled. Imo this is part of hardware description.
Should I remove the properties?

Yannic

> 
> Frank
> 
> > +		regulator-max-microvolt = <1800000>;
> > +		regulator-min-microvolt = <1800000>;
> > +		regulator-name = "VDD_1V8";
> > +	};
> >  };
> > 
> >  &A53_0 {
> > @@ -83,6 +92,7 @@ som_flash: flash@0 {
> >  		spi-max-frequency = <80000000>;
> >  		spi-rx-bus-width = <4>;
> >  		spi-tx-bus-width = <1>;
> > +		vcc-supply = <&reg_vdd_1v8>;
> >  	};
> >  };
> > 
> > 
> > --
> > 2.51.0
> > 

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

[Yannic Moog]

On Mon, 2025-10-20 at 11:38 -0400, Frank Li wrote:
> On Mon, Oct 20, 2025 at 03:11:24PM +0200, Yannic Moog wrote:
> > From: Stefan Riedmueller <s.riedmueller@phytec.de>
> > 
> > On the phyBOARD-Pollux the i2c3 node is used on the CSI1 interface to
> > connect to imaging sensors. Thus define it so it can be easily enabled if
> > required.
> Nit:
> 
> The i2c3 of the phyBOARD-Pollux is used ...

Sorry, I can't follow. Would you like me to rephrase the commit message?

Yannic

> 
> Reviewed-by: Frank Li <Frank.Li@nxp.com>
> 
> > 
> > Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
> > Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
> > 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
> > 
> > --
> > 2.51.0
> >