boards: shields: nxp_m2_wifi_bt: overlay update

- Updated shield overlay file for RT1060 with sdio power and reset pins
- added device tree node in sdhc for sd reset pin
- added power gpio toggle logic

Signed-off-by: Abhinav Kulkarni <[email protected]>

Author: abhinavnxp

boards/shields/nxp_m2_wifi_bt/boards/mimxrt1060_evk_mimxrt1062_qspi_C.overlay

@@ -34,6 +34,13 @@
 	pinctrl-names = "default", "slow", "med", "fast", "nopull";
 };
 
+&usdhc1 {
+	nxp_wifi {
+		pwr-gpios = <&gpio1 19 GPIO_ACTIVE_HIGH>;
+		sd-gpios = <&gpio1 24 GPIO_ACTIVE_HIGH>;
+	};
+};
+
 &pinctrl {
 	/* removes pull on dat3 for card detect */
 	pinmux_usdhc1_dat3_nopull: pinmux_usdhc1_dat3_nopull {

drivers/wifi/nxp/nxp_wifi_drv.c

@@ -1,5 +1,5 @@
 /**
- * Copyright 2023-2024 NXP
+ * Copyright 2023-2025 NXP
  * SPDX-License-Identifier: Apache-2.0
  *
  * @file nxp_wifi_drv.c
@@ -394,6 +394,77 @@ int nxp_wifi_wlan_event_callback(enum wlan_event_reason reason, void *data)
 	return 0;
 }
 
+static int nxp_wifi_cpu_reset(uint8_t enable)
+{
+	int err = 0;
+#if DT_NODE_HAS_PROP(DT_DRV_INST(0), sd_gpios) &&    \
+	DT_NODE_HAS_PROP(DT_DRV_INST(0), pwr_gpios)
+
+	struct gpio_dt_spec sdio_reset = GPIO_DT_SPEC_GET(DT_DRV_INST(0), sd_gpios);
+	struct gpio_dt_spec pwr_gpios = GPIO_DT_SPEC_GET(DT_DRV_INST(0), pwr_gpios);
+
+	if (!gpio_is_ready_dt(&sdio_reset)) {
+		LOG_ERR("Error: failed to configure sdio_reset %s pin %d", sdio_reset.port->name,
+				sdio_reset.pin);
+		return -EIO;
+	}
+
+	/* Configure sdio_reset as output  */
+	err = gpio_pin_configure_dt(&sdio_reset, GPIO_OUTPUT);
+	if (err) {
+		LOG_ERR("Error %d: failed to configure sdio_reset %s pin %d", err,
+				sdio_reset.port->name, sdio_reset.pin);
+		return err;
+	}
+
+	if (!gpio_is_ready_dt(&pwr_gpios)) {
+		LOG_ERR("Error: failed to configure pwr_gpios %s pin %d", pwr_gpios.port->name,
+				pwr_gpios.pin);
+		return -EIO;
+	}
+
+	/* Configure wlan-power-io as an output  */
+	err = gpio_pin_configure_dt(&pwr_gpios, GPIO_OUTPUT);
+	if (err) {
+		LOG_ERR("Error %d: failed to configure pwr_gpios %s pin %d", err,
+				pwr_gpios.port->name, pwr_gpios.pin);
+		return err;
+	}
+
+	if (enable) {
+		/* Set SDIO reset pin as high  */
+		err = gpio_pin_set_dt(&sdio_reset, 1);
+		if (err) {
+			return err;
+		}
+		/* wait for reset done */
+		k_sleep(K_MSEC(100));
+
+		/* Set power gpio pin as high  */
+		err = gpio_pin_set_dt(&pwr_gpios, 1);
+		if (err) {
+			return err;
+		}
+	} else {
+		/* Set SDIO reset pin as low */
+		err = gpio_pin_set_dt(&sdio_reset, 0);
+		if (err) {
+			return err;
+		}
+
+		/* Set power gpio pin as low */
+		err = gpio_pin_set_dt(&pwr_gpios, 0);
+		if (err) {
+			return err;
+		}
+	}
+	/* wait for reset done */
+	k_sleep(K_MSEC(100));
+#endif
+
+	return err;
+}
+
 static int nxp_wifi_wlan_init(void)
 {
 	int status = NXP_WIFI_RET_SUCCESS;
@@ -407,7 +478,9 @@ static int nxp_wifi_wlan_init(void)
 		k_event_init(&s_nxp_wifi_SyncEvent);
 	}
 
-	if (status == NXP_WIFI_RET_SUCCESS) {
+	ret = nxp_wifi_cpu_reset(true);
+
+	if ((status == NXP_WIFI_RET_SUCCESS) && (ret == 0)) {
 		ret = wlan_init(wlan_fw_bin, wlan_fw_bin_len);
 		if (ret != WM_SUCCESS) {
 			status = NXP_WIFI_RET_FAIL;

dts/bindings/sdhc/nxp,imx-usdhc.yaml

@@ -46,6 +46,14 @@ properties:
       property value should ensure the flags properly describe the signal
       that is presented to the driver.
 
+  sd-gpios:
+    type: phandle-array
+    description: |
+      SDIO Reset pin
+      This pin defaults to active high when consumed by the SD card. The
+      property value should ensure the flags properly describe the signal
+      that is presented to the driver.
+
   cd-gpios:
     type: phandle-array
     description: |

dts/bindings/wifi/nxp,wifi.yaml

@@ -1,4 +1,4 @@
-# Copyright 2023-2024 NXP
+# Copyright 2023-2025 NXP
 #
 # SPDX-License-Identifier: Apache-2.0
 
@@ -17,3 +17,18 @@ properties:
       This pin defaults to active low when consumed by the SDK card. The
       property value should ensure the flags properly describ the signal
       that is presendted to the driver.
+  pwr-gpios:
+    type: phandle-array
+    description: |
+      Power pin
+      This pin defaults to active high when consumed by the wlan cpu power.
+      The property value should ensure the flags properly describe the signal
+      that is presented to the driver.
+
+  sd-gpios:
+    type: phandle-array
+    description: |
+      SDIO Reset pin
+      This pin defaults to active high when consumed by the SD card. The
+      property value should ensure the flags properly describe the signal
+      that is presented to the driver.