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Message-ID: <20251029192852.656806-2-stefano.radaelli21@gmail.com>
Date: Wed, 29 Oct 2025 20:28:46 +0100
From: Stefano Radaelli <stefano.radaelli21@...il.com>
To: devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Stefano Radaelli <stefano.radaelli21@...il.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 1/4] arm64: dts: freescale: imx93-var-som: Add WiFi and Bluetooth support
Add device tree nodes for the WiFi and Bluetooth module mounted on the
VAR-SOM-MX93. 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.radaelli21@...il.com>
---
.../boot/dts/freescale/imx93-var-som.dtsi | 94 ++++++++++++++++++-
1 file changed, 93 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx93-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-var-som.dtsi
index a5f09487d803..97198007b545 100644
--- a/arch/arm64/boot/dts/freescale/imx93-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-var-som.dtsi
@@ -12,7 +12,7 @@ /{
model = "Variscite VAR-SOM-MX93 module";
compatible = "variscite,var-som-mx93", "fsl,imx93";
- mmc_pwrseq: mmc-pwrseq {
+ usdhc3_pwrseq: mmc-pwrseq {
compatible = "mmc-pwrseq-simple";
post-power-on-delay-ms = <100>;
power-off-delay-us = <10000>;
@@ -70,6 +70,18 @@ led@1 {
};
};
+/* BT module */
+&lpuart5 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_lpuart5>, <&pinctrl_bluetooth>;
+ uart-has-rtscts;
+ status = "okay";
+
+ bluetooth {
+ compatible = "nxp,88w8987-bt";
+ };
+};
+
/* eMMC */
&usdhc1 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
@@ -81,7 +93,27 @@ &usdhc1 {
status = "okay";
};
+/* WiFi */
+&usdhc3 {
+ pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
+ pinctrl-0 = <&pinctrl_usdhc3>, <&pinctrl_usdhc3_wlan>;
+ pinctrl-1 = <&pinctrl_usdhc3_100mhz>, <&pinctrl_usdhc3_wlan>;
+ pinctrl-2 = <&pinctrl_usdhc3_200mhz>, <&pinctrl_usdhc3_wlan>;
+ pinctrl-3 = <&pinctrl_usdhc3_sleep>, <&pinctrl_usdhc3_wlan>;
+ bus-width = <4>;
+ mmc-pwrseq = <&usdhc3_pwrseq>;
+ non-removable;
+ wakeup-source;
+ status = "okay";
+};
+
&iomuxc {
+ pinctrl_bluetooth: bluetoothgrp {
+ fsl,pins = <
+ MX93_PAD_ENET2_MDIO__GPIO4_IO15 0x51e
+ >;
+ };
+
pinctrl_eqos: eqosgrp {
fsl,pins = <
MX93_PAD_ENET1_MDC__ENET_QOS_MDC 0x57e
@@ -108,6 +140,15 @@ MX93_PAD_UART2_TXD__GPIO1_IO07 0x51e
>;
};
+ pinctrl_lpuart5: lpuart5grp {
+ fsl,pins = <
+ MX93_PAD_DAP_TDO_TRACESWO__LPUART5_TX 0x31e
+ MX93_PAD_DAP_TDI__LPUART5_RX 0x31e
+ MX93_PAD_DAP_TMS_SWDIO__LPUART5_RTS_B 0x31e
+ MX93_PAD_DAP_TCLK_SWCLK__LPUART5_CTS_B 0x31e
+ >;
+ };
+
pinctrl_usdhc1: usdhc1grp {
fsl,pins = <
MX93_PAD_SD1_CLK__USDHC1_CLK 0x15fe
@@ -123,4 +164,55 @@ MX93_PAD_SD1_DATA7__USDHC1_DATA7 0x13fe
MX93_PAD_SD1_STROBE__USDHC1_STROBE 0x15fe
>;
};
+
+ pinctrl_usdhc3: usdhc3grp {
+ fsl,pins = <
+ MX93_PAD_SD3_CLK__USDHC3_CLK 0x1582 /* SDIO_B_CLK */
+ MX93_PAD_SD3_CMD__USDHC3_CMD 0x40001382 /* SDIO_B_CMD */
+ MX93_PAD_SD3_DATA0__USDHC3_DATA0 0x40001382 /* SDIO_B_D0 */
+ MX93_PAD_SD3_DATA1__USDHC3_DATA1 0x40001382 /* SDIO_B_D1 */
+ MX93_PAD_SD3_DATA2__USDHC3_DATA2 0x40001382 /* SDIO_B_D2 */
+ MX93_PAD_SD3_DATA3__USDHC3_DATA3 0x40001382 /* SDIO_B_D3 */
+ >;
+ };
+
+ pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
+ fsl,pins = <
+ MX93_PAD_SD3_CLK__USDHC3_CLK 0x158e /* SDIO_B_CLK */
+ MX93_PAD_SD3_CMD__USDHC3_CMD 0x4000138e /* SDIO_B_CMD */
+ MX93_PAD_SD3_DATA0__USDHC3_DATA0 0x4000138e /* SDIO_B_D0 */
+ MX93_PAD_SD3_DATA1__USDHC3_DATA1 0x4000138e /* SDIO_B_D1 */
+ MX93_PAD_SD3_DATA2__USDHC3_DATA2 0x4000138e /* SDIO_B_D2 */
+ MX93_PAD_SD3_DATA3__USDHC3_DATA3 0x4000138e /* SDIO_B_D3 */
+ >;
+ };
+
+ pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
+ fsl,pins = <
+ MX93_PAD_SD3_CLK__USDHC3_CLK 0x15fe /* SDIO_B_CLK */
+ MX93_PAD_SD3_CMD__USDHC3_CMD 0x400013fe /* SDIO_B_CMD */
+ MX93_PAD_SD3_DATA0__USDHC3_DATA0 0x400013fe /* SDIO_B_D0 */
+ MX93_PAD_SD3_DATA1__USDHC3_DATA1 0x400013fe /* SDIO_B_D1 */
+ MX93_PAD_SD3_DATA2__USDHC3_DATA2 0x400013fe /* SDIO_B_D2 */
+ MX93_PAD_SD3_DATA3__USDHC3_DATA3 0x400013fe /* SDIO_B_D3 */
+ >;
+ };
+
+ pinctrl_usdhc3_sleep: usdhc3-sleepgrp {
+ fsl,pins = <
+ MX93_PAD_SD3_CLK__GPIO3_IO20 0x400
+ MX93_PAD_SD3_CMD__GPIO3_IO21 0x400
+ MX93_PAD_SD3_DATA0__GPIO3_IO22 0x400
+ MX93_PAD_SD3_DATA1__GPIO3_IO23 0x400
+ MX93_PAD_SD3_DATA2__GPIO3_IO24 0x400
+ MX93_PAD_SD3_DATA3__GPIO3_IO25 0x400
+ >;
+ };
+
+ pinctrl_usdhc3_wlan: usdhc3-wlangrp {
+ fsl,pins = <
+ MX93_PAD_ENET2_MDC__GPIO4_IO14 0x51e /* WIFI_REG_ON */
+ MX93_PAD_SD2_RESET_B__GPIO3_IO07 0x51e /* WIFI_PWR_EN */
+ >;
+ };
};
--
2.43.0
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