Re: [PATCH] arm64: dts: imx93-11x11-frdm: enable additional devices

From: Joseph Guo

Date: Fri Jun 05 2026 - 05:03:17 EST

On Thu, Jan 15, 2026 at 06:11:34PM +0100, Francesco Valla wrote:
> Enable additional devices on the i.MX93 FRDM board:
>
> - CAN port and associated transceiver
> - Bluetooth portion of the IW612 chipset
> - WiFi SDIO port
> - user buttons
>
> The WiFi portion of the on-board IW612 chipset is still not supported
> upstream, but since SDIO is a discoverable bus it will be probed once it
> is.
>
> Signed-off-by: Francesco Valla <francesco@xxxxxxxx>
> ---
> Applies on top of [0].
>
> WiFi was tested using the nxpwifi driver proposed in [1].
>
> [0] https://lore.kernel.org/all/20260113075002.561453-1-daniel.baluta@xxxxxxx/
> [1] https://lore.kernel.org/all/20251205065545.3325032-1-jeff.chen_1@xxxxxxx/
>
> Reagrds,
> Francesco
> ---
> arch/arm64/boot/dts/freescale/imx93-11x11-frdm.dts | 152 +++++++++++++++++++++
> 1 file changed, 152 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx93-11x11-frdm.dts b/arch/arm64/boot/dts/freescale/imx93-11x11-frdm.dts
> index 5bb6ae0d154a655283295b6902fc29bf6f744d5c..bd14ba28690c081817111aaabef12fb56a7c56a4 100644
> --- a/arch/arm64/boot/dts/freescale/imx93-11x11-frdm.dts
> +++ b/arch/arm64/boot/dts/freescale/imx93-11x11-frdm.dts
> @@ -9,6 +9,7 @@ / {
> model = "NXP i.MX93 11X11 FRDM board";
>
> aliases {
> + can0 = &flexcan2;
> ethernet0 = &fec;
> ethernet1 = &eqos;
> i2c0 = &lpi2c1;
> @@ -18,12 +19,40 @@ aliases {
> mmc1 = &usdhc2; /* uSD */
> rtc0 = &pcf2131;
> serial0 = &lpuart1;
> + serial4 = &lpuart5;
> };
>
> chosen {
> stdout-path = &lpuart1;
> };
>
> + flexcan2_phy: can-phy {
> + compatible = "nxp,tja1051";
> + #phy-cells = <0>;
> + max-bitrate = <5000000>;
> + silent-gpios = <&pcal6524 23 GPIO_ACTIVE_HIGH>;
> + };
> +
> + gpio-keys {
> + compatible = "gpio-keys";
> +
> + button-k2 {
> + label = "Button K2";
> + linux,code = <BTN_1>;
> + gpios = <&pcal6524 5 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
> + interrupt-parent = <&pcal6524>;
> + interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
> + };
> +
> + button-k3 {
> + label = "Button K3";
> + linux,code = <BTN_2>;
> + gpios = <&pcal6524 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
> + interrupt-parent = <&pcal6524>;
> + interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
> + };
> + };
> +
> reg_usdhc2_vmmc: regulator-usdhc2 {
> compatible = "regulator-fixed";
> off-on-delay-us = <12000>;
> @@ -37,6 +66,16 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
> enable-active-high;
> };
>
> + reg_usdhc3_vmmc: regulator-usdhc3 {
> + compatible = "regulator-fixed";
> + regulator-name = "VPCIe_3V3";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + startup-delay-us = <20000>;
> + gpio = <&pcal6524 13 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + };
> +
> reserved-memory {
> ranges;
> #address-cells = <2>;
> @@ -88,6 +127,11 @@ sound-mqs {
> audio-cpu = <&sai1>;
> audio-codec = <&mqs1>;
> };
> +
> + usdhc3_pwrseq: mmc-pwrseq {
> + compatible = "mmc-pwrseq-simple";
> + reset-gpios = <&pcal6524 12 GPIO_ACTIVE_LOW>;
> + };
> };
>
> &adc1 {
> @@ -157,11 +201,27 @@ ethphy2: ethernet-phy@2 {
> };
> };
>
> +&flexcan2 {
> + phys = <&flexcan2_phy>;
> + pinctrl-0 = <&pinctrl_flexcan2>;
> + pinctrl-1 = <&pinctrl_flexcan2_sleep>;
> + pinctrl-names = "default", "sleep";
> + status = "okay";
> +};
> +
> &lpi2c1 {
> clock-frequency = <400000>;
> pinctrl-0 = <&pinctrl_lpi2c1>;
> pinctrl-names = "default";
> status = "okay";
> +
> + pcal6408: gpio@20 {
> + compatible = "nxp,pcal6408";
> + reg = <0x20>;
> + #gpio-cells = <2>;
> + gpio-controller;
> + reset-gpios = <&pcal6524 20 GPIO_ACTIVE_LOW>;
> + };
> };
>
> &lpi2c2 {
> @@ -322,6 +382,21 @@ &lpuart1 { /* console */
> status = "okay";
> };
>
> +&lpuart5 {
> + pinctrl-0 = <&pinctrl_uart5>;
> + pinctrl-names = "default";
> + status = "okay";
> +
> + uart-has-rtscts;
> +
> + bluetooth {
> + compatible = "nxp,88w8987-bt";
> + device-wakeup-gpios = <&pcal6408 3 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&pcal6524 19 GPIO_ACTIVE_LOW>;
> + vcc-supply = <&reg_usdhc3_vmmc>;
> + };
> +};
Hi Francesco,

Do you ever tried bluetooth feature? The bluetooth failed to scan with 'device-wakeup-gpios' property.

Regards,
Joseph

> +
> &mqs1 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_mqs1>;
> @@ -394,6 +469,20 @@ &usdhc2 {
> status = "okay";
> };
>
> +&usdhc3 {
> + bus-width = <4>;
> + keep-power-in-suspend;
> + mmc-pwrseq = <&usdhc3_pwrseq>;
> + non-removable;
> + pinctrl-0 = <&pinctrl_usdhc3>;
> + pinctrl-1 = <&pinctrl_usdhc3_100mhz>;
> + pinctrl-2 = <&pinctrl_usdhc3_200mhz>;
> + pinctrl-3 = <&pinctrl_usdhc3_sleep>;
> + pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
> + vmmc-supply = <&reg_usdhc3_vmmc>;
> + status = "okay";
> +};
> +
> &wdog3 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_wdog>;
> @@ -486,6 +575,13 @@ MX93_PAD_GPIO_IO27__CAN2_RX 0x139e
> >;
> };
>
> + pinctrl_flexcan2_sleep: flexcan2sleepgrp {
> + fsl,pins = <
> + MX93_PAD_GPIO_IO25__GPIO2_IO25 0x31e
> + MX93_PAD_GPIO_IO27__GPIO2_IO27 0x31e
> + >;
> + };
> +
> pinctrl_lpi2c1: lpi2c1grp {
> fsl,pins = <
> MX93_PAD_I2C1_SCL__LPI2C1_SCL 0x40000b9e
> @@ -533,6 +629,15 @@ MX93_PAD_UART1_TXD__LPUART1_TX 0x31e
> >;
> };
>
> + pinctrl_uart5: uart5grp {
> + 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
> + >;
> + };
> +
> /* need to config the SION for data and cmd pad, refer to ERR052021 */
> pinctrl_usdhc1: usdhc1grp {
> fsl,pins = <
> @@ -647,6 +752,53 @@ MX93_PAD_SD2_VSELECT__GPIO3_IO19 0x51e
> >;
> };
>
> + /* need to config the SION for data and cmd pad, refer to ERR052021 */
> + pinctrl_usdhc3: usdhc3grp {
> + fsl,pins = <
> + MX93_PAD_SD3_CLK__USDHC3_CLK 0x1582
> + MX93_PAD_SD3_CMD__USDHC3_CMD 0x40001382
> + MX93_PAD_SD3_DATA0__USDHC3_DATA0 0x40001382
> + MX93_PAD_SD3_DATA1__USDHC3_DATA1 0x40001382
> + MX93_PAD_SD3_DATA2__USDHC3_DATA2 0x40001382
> + MX93_PAD_SD3_DATA3__USDHC3_DATA3 0x40001382
> + >;
> + };
> +
> + /* need to config the SION for data and cmd pad, refer to ERR052021 */
> + pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
> + fsl,pins = <
> + MX93_PAD_SD3_CLK__USDHC3_CLK 0x158e
> + MX93_PAD_SD3_CMD__USDHC3_CMD 0x4000138e
> + MX93_PAD_SD3_DATA0__USDHC3_DATA0 0x4000138e
> + MX93_PAD_SD3_DATA1__USDHC3_DATA1 0x4000138e
> + MX93_PAD_SD3_DATA2__USDHC3_DATA2 0x4000138e
> + MX93_PAD_SD3_DATA3__USDHC3_DATA3 0x4000138e
> + >;
> + };
> +
> + /* need to config the SION for data and cmd pad, refer to ERR052021 */
> + pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
> + fsl,pins = <
> + MX93_PAD_SD3_CLK__USDHC3_CLK 0x15fe
> + MX93_PAD_SD3_CMD__USDHC3_CMD 0x400013fe
> + MX93_PAD_SD3_DATA0__USDHC3_DATA0 0x400013fe
> + MX93_PAD_SD3_DATA1__USDHC3_DATA1 0x400013fe
> + MX93_PAD_SD3_DATA2__USDHC3_DATA2 0x400013fe
> + MX93_PAD_SD3_DATA3__USDHC3_DATA3 0x400013fe
> + >;
> + };
> +
> + pinctrl_usdhc3_sleep: usdhc3grpsleepgrp {
> + fsl,pins = <
> + MX93_PAD_SD3_CLK__GPIO3_IO20 0x31e
> + MX93_PAD_SD3_CMD__GPIO3_IO21 0x31e
> + MX93_PAD_SD3_DATA0__GPIO3_IO22 0x31e
> + MX93_PAD_SD3_DATA1__GPIO3_IO23 0x31e
> + MX93_PAD_SD3_DATA2__GPIO3_IO24 0x31e
> + MX93_PAD_SD3_DATA3__GPIO3_IO25 0x31e
> + >;
> + };
> +
> pinctrl_wdog: wdoggrp {
> fsl,pins = <
> MX93_PAD_WDOG_ANY__WDOG1_WDOG_ANY 0x31e
>
> ---
> base-commit: 8ce368ca61310f425012fea4549d2b6ad0c5c54c
> change-id: 20260114-imx93_devices-a98e116463b3
>
> Best regards,
> --
> Francesco Valla <francesco@xxxxxxxx>
>