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Message-ID: <20251210152000.42265-5-stefano.r@variscite.com>
Date: Wed, 10 Dec 2025 16:19:56 +0100
From: Stefano Radaelli <stefano.r@...iscite.com>
To: devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Stefano Radaelli <stefano.r@...iscite.com>,
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>,
imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v1 4/6] arm64: dts: imx8mp-var-som: Add WiFi and Bluetooth support
Add device tree nodes for the WiFi and Bluetooth module mounted on the
VAR-SOM-MX8MP. The module can be based on either the NXP IW612 or IW611
chipset, depending on the configuration chosen by the customer.
Regardless of the chipset used, WiFi communicates over SDIO and Bluetooth
over UART.
Signed-off-by: Stefano Radaelli <stefano.r@...iscite.com>
---
.../boot/dts/freescale/imx8mp-var-som.dtsi | 93 +++++++++++++++++++
1 file changed, 93 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-var-som.dtsi
index 5bba91dcef17..e7f5ec10cbac 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-var-som.dtsi
@@ -21,6 +21,15 @@ memory@...00000 {
<0x1 0x00000000 0 0xc0000000>;
};
+ iw61x_pwrseq: wifi-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ post-power-on-delay-ms = <100>;
+ power-off-delay-us = <10000>;
+ reset-gpios = <&gpio2 8 GPIO_ACTIVE_LOW>, /* WIFI_RESET */
+ <&gpio2 19 GPIO_ACTIVE_LOW>; /* WIFI_PWR_EN */
+ status = "okay";
+ };
+
reg_phy_supply: regulator-phy-supply {
compatible = "regulator-fixed";
regulator-name = "phy-supply";
@@ -202,6 +211,33 @@ ldo5: LDO5 {
};
};
+/* BT */
+&uart3 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart3>, <&pinctrl_bluetooth>;
+ assigned-clocks = <&clk IMX8MP_CLK_UART3>;
+ assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_80M>;
+ uart-has-rtscts;
+ status = "okay";
+
+ bluetooth {
+ compatible = "nxp,88w8987-bt";
+ };
+};
+
+/* WIFI */
+&usdhc1 {
+ pinctrl-names = "default", "state_100mhz", "state_200mhz";
+ pinctrl-0 = <&pinctrl_usdhc1>, <&pinctrl_wifi>;
+ pinctrl-1 = <&pinctrl_usdhc1_100mhz>, <&pinctrl_wifi>;
+ pinctrl-2 = <&pinctrl_usdhc1_200mhz>, <&pinctrl_wifi>;
+ bus-width = <4>;
+ non-removable;
+ keep-power-in-suspend;
+ mmc-pwrseq = <&iw61x_pwrseq>;
+ status = "okay";
+};
+
/* eMMC */
&usdhc3 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
@@ -222,6 +258,14 @@ &wdog1 {
&iomuxc {
+ pinctrl_bluetooth: bluetoothgrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SD1_DATA7__GPIO2_IO09 0xc0
+ MX8MP_IOMUXC_GPIO1_IO04__GPIO1_IO04 0xc0
+ MX8MP_IOMUXC_SD1_RESET_B__GPIO2_IO10 0xc0
+ >;
+ };
+
pinctrl_eqos: eqosgrp {
fsl,pins = <
MX8MP_IOMUXC_ENET_MDC__ENET_QOS_MDC 0x2
@@ -256,6 +300,48 @@ MX8MP_IOMUXC_SPDIF_RX__GPIO5_IO04 0x1c0
>;
};
+ pinctrl_uart3: uart3grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_ECSPI1_SCLK__UART3_DCE_RX 0x140
+ MX8MP_IOMUXC_ECSPI1_MOSI__UART3_DCE_TX 0x140
+ MX8MP_IOMUXC_ECSPI1_MISO__UART3_DCE_CTS 0x140
+ MX8MP_IOMUXC_ECSPI1_SS0__UART3_DCE_RTS 0x140
+ >;
+ };
+
+ pinctrl_usdhc1: usdhc1grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK 0x190
+ MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD 0x1d0
+ MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0 0x1d0
+ MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1 0x1d0
+ MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2 0x1d0
+ MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3 0x1d0
+ >;
+ };
+
+ pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK 0x194
+ MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD 0x1d4
+ MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0 0x1d4
+ MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1 0x1d4
+ MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2 0x1d4
+ MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3 0x1d4
+ >;
+ };
+
+ pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SD1_CLK__USDHC1_CLK 0x196
+ MX8MP_IOMUXC_SD1_CMD__USDHC1_CMD 0x1d6
+ MX8MP_IOMUXC_SD1_DATA0__USDHC1_DATA0 0x1d6
+ MX8MP_IOMUXC_SD1_DATA1__USDHC1_DATA1 0x1d6
+ MX8MP_IOMUXC_SD1_DATA2__USDHC1_DATA2 0x1d6
+ MX8MP_IOMUXC_SD1_DATA3__USDHC1_DATA3 0x1d6
+ >;
+ };
+
pinctrl_usdhc3: usdhc3grp {
fsl,pins = <
MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK 0x190
@@ -309,4 +395,11 @@ pinctrl_wdog: wdoggrp {
MX8MP_IOMUXC_GPIO1_IO02__WDOG1_WDOG_B 0xc6
>;
};
+
+ pinctrl_wifi: wifigrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SD1_DATA6__GPIO2_IO08 0xc0
+ MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19 0xc0
+ >;
+ };
};
--
2.47.3
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