[PATCH] arm64: dts: imx91-11x11-evk: Add usdhc3 for SDIO WiFi support

[Sherry Sun <sherry.sun@nxp.com>]

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 = <&reg_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 = <&reg_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