* [PATCH] arm64: dts: imx91-11x11-evk: Add usdhc3 for SDIO WiFi support
@ 2026-02-05 10:06 Sherry Sun
2026-03-02 16:19 ` Frank Li
2026-03-02 17:32 ` Frank Li
0 siblings, 2 replies; 3+ messages in thread
From: Sherry Sun @ 2026-02-05 10:06 UTC (permalink / raw)
To: robh, krzk+dt, conor+dt, Frank.Li, s.hauer, festevam
Cc: imx, kernel, devicetree, linux-kernel, linux-arm-kernel
Add usdhc3 to support M.2 SDIO WiFi on i.MX91 11x11 EVK board.
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
---
.../boot/dts/freescale/imx91-11x11-evk.dts | 96 +++++++++++++++++++
1 file changed, 96 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
index 03f460d62f7a..3a4a809b5e76 100644
--- a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
@@ -23,6 +23,7 @@ aliases {
i2c2 = &lpi2c3;
mmc0 = &usdhc1;
mmc1 = &usdhc2;
+ mmc2 = &usdhc3;
rtc0 = &bbnsm_rtc;
serial0 = &lpuart1;
serial1 = &lpuart2;
@@ -57,6 +58,15 @@ reg_audio_pwr: regulator-audio-pwr {
enable-active-high;
};
+ reg_m2_pwr: regulator-m2-pwr {
+ compatible = "regulator-fixed";
+ regulator-name = "M.2-power";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&pcal6524 13 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
reg_usdhc2_vmmc: regulator-usdhc2 {
compatible = "regulator-fixed";
off-on-delay-us = <12000>;
@@ -69,6 +79,23 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
enable-active-high;
};
+ reg_usdhc3_vmmc: regulator-usdhc3 {
+ compatible = "regulator-fixed";
+ regulator-name = "WLAN_EN";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ vin-supply = <®_m2_pwr>;
+ gpio = <&pcal6524 20 GPIO_ACTIVE_HIGH>;
+ /*
+ * IW612 wifi chip needs more delay than other wifi chips to complete
+ * the host interface initialization after power up, otherwise the
+ * internal state of IW612 may be unstable, resulting in the failure of
+ * the SDIO3.0 switch voltage.
+ */
+ startup-delay-us = <20000>;
+ enable-active-high;
+ };
+
reserved-memory {
ranges;
#address-cells = <2>;
@@ -144,6 +171,11 @@ cpu {
};
};
};
+
+ usdhc3_pwrseq: usdhc3_pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ reset-gpios = <&pcal6524 12 GPIO_ACTIVE_LOW>;
+ };
};
&adc1 {
@@ -246,6 +278,12 @@ pcal6524: gpio@22 {
interrupt-parent = <&gpio3>;
pinctrl-0 = <&pinctrl_pcal6524>;
pinctrl-names = "default";
+
+ m2-pcm-level-shifter-hog {
+ gpio-hog;
+ gpios = <19 GPIO_ACTIVE_HIGH>;
+ output-high;
+ };
};
pmic@25 {
@@ -531,6 +569,21 @@ &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 = <®_usdhc3_vmmc>;
+ wakeup-source;
+ status = "okay";
+};
+
&wdog3 {
fsl,ext-reset-output;
status = "okay";
@@ -850,4 +903,47 @@ MX91_PAD_SD2_VSELECT__GPIO3_IO19 0x51e
>;
};
+ pinctrl_usdhc3: usdhc3grp {
+ fsl,pins = <
+ MX91_PAD_SD3_CLK__USDHC3_CLK 0x1582
+ MX91_PAD_SD3_CMD__USDHC3_CMD 0x1382
+ MX91_PAD_SD3_DATA0__USDHC3_DATA0 0x1382
+ MX91_PAD_SD3_DATA1__USDHC3_DATA1 0x1382
+ MX91_PAD_SD3_DATA2__USDHC3_DATA2 0x1382
+ MX91_PAD_SD3_DATA3__USDHC3_DATA3 0x1382
+ >;
+ };
+
+ pinctrl_usdhc3_100mhz: usdhc3-100mhzgrp {
+ fsl,pins = <
+ MX91_PAD_SD3_CLK__USDHC3_CLK 0x158e
+ MX91_PAD_SD3_CMD__USDHC3_CMD 0x138e
+ MX91_PAD_SD3_DATA0__USDHC3_DATA0 0x138e
+ MX91_PAD_SD3_DATA1__USDHC3_DATA1 0x138e
+ MX91_PAD_SD3_DATA2__USDHC3_DATA2 0x138e
+ MX91_PAD_SD3_DATA3__USDHC3_DATA3 0x138e
+ >;
+ };
+
+ pinctrl_usdhc3_200mhz: usdhc3-200mhzgrp {
+ fsl,pins = <
+ MX91_PAD_SD3_CLK__USDHC3_CLK 0x15fe
+ MX91_PAD_SD3_CMD__USDHC3_CMD 0x13fe
+ MX91_PAD_SD3_DATA0__USDHC3_DATA0 0x13fe
+ MX91_PAD_SD3_DATA1__USDHC3_DATA1 0x13fe
+ MX91_PAD_SD3_DATA2__USDHC3_DATA2 0x13fe
+ MX91_PAD_SD3_DATA3__USDHC3_DATA3 0x13fe
+ >;
+ };
+
+ pinctrl_usdhc3_sleep: usdhc3grpsleep {
+ fsl,pins = <
+ MX91_PAD_SD3_CLK__GPIO3_IO20 0x31e
+ MX91_PAD_SD3_CMD__GPIO3_IO21 0x31e
+ MX91_PAD_SD3_DATA0__GPIO3_IO22 0x31e
+ MX91_PAD_SD3_DATA1__GPIO3_IO23 0x31e
+ MX91_PAD_SD3_DATA2__GPIO3_IO24 0x31e
+ MX91_PAD_SD3_DATA3__GPIO3_IO25 0x31e
+ >;
+ };
};
--
2.37.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] arm64: dts: imx91-11x11-evk: Add usdhc3 for SDIO WiFi support
2026-02-05 10:06 [PATCH] arm64: dts: imx91-11x11-evk: Add usdhc3 for SDIO WiFi support Sherry Sun
@ 2026-03-02 16:19 ` Frank Li
2026-03-02 17:32 ` Frank Li
1 sibling, 0 replies; 3+ messages in thread
From: Frank Li @ 2026-03-02 16:19 UTC (permalink / raw)
To: robh, krzk+dt, conor+dt, s.hauer, festevam, Sherry Sun
Cc: Frank Li, imx, kernel, devicetree, linux-kernel, linux-arm-kernel
On Thu, 05 Feb 2026 18:06:47 +0800, Sherry Sun wrote:
> Add usdhc3 to support M.2 SDIO WiFi on i.MX91 11x11 EVK board.
>
>
Applied, thanks!
[1/1] arm64: dts: imx91-11x11-evk: Add usdhc3 for SDIO WiFi support
(no commit info)
Best regards,
--
Frank Li <Frank.Li@nxp.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] arm64: dts: imx91-11x11-evk: Add usdhc3 for SDIO WiFi support
2026-02-05 10:06 [PATCH] arm64: dts: imx91-11x11-evk: Add usdhc3 for SDIO WiFi support Sherry Sun
2026-03-02 16:19 ` Frank Li
@ 2026-03-02 17:32 ` Frank Li
1 sibling, 0 replies; 3+ messages in thread
From: Frank Li @ 2026-03-02 17:32 UTC (permalink / raw)
To: Sherry Sun
Cc: robh, krzk+dt, conor+dt, s.hauer, festevam, imx, kernel,
devicetree, linux-kernel, linux-arm-kernel
On Thu, Feb 05, 2026 at 06:06:47PM +0800, Sherry Sun wrote:
> Add usdhc3 to support M.2 SDIO WiFi on i.MX91 11x11 EVK board.
>
> Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
> ---
> .../boot/dts/freescale/imx91-11x11-evk.dts | 96 +++++++++++++++++++
> 1 file changed, 96 insertions(+)
>
...
> + pinctrl_usdhc3_sleep: usdhc3grpsleep {
I rename usdhc3grpsleep to usdhc3-sleepgrp, please run CHECK_DTBS before
submit patch to make sure not warning.
Frank
> + fsl,pins = <
> + MX91_PAD_SD3_CLK__GPIO3_IO20 0x31e
> + MX91_PAD_SD3_CMD__GPIO3_IO21 0x31e
> + MX91_PAD_SD3_DATA0__GPIO3_IO22 0x31e
> + MX91_PAD_SD3_DATA1__GPIO3_IO23 0x31e
> + MX91_PAD_SD3_DATA2__GPIO3_IO24 0x31e
> + MX91_PAD_SD3_DATA3__GPIO3_IO25 0x31e
> + >;
> + };
> };
> --
> 2.37.1
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-02-05 10:06 [PATCH] arm64: dts: imx91-11x11-evk: Add usdhc3 for SDIO WiFi support Sherry Sun
2026-03-02 16:19 ` Frank Li
2026-03-02 17:32 ` Frank Li
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