For AIC8800 (WIFI/BT chip): The AIC8800 driver must be unloaded before entering STR (Suspend to RAM); otherwise, upon waking from STR, initialization will fail.

1.broken-cd: The default non-removable attribute fails to recognize the AIC8800, thus it is set to rely on a software card detection signal instead of hardware, always treating the card slot as if a card is present.
2.keep-power-in-suspend: The SDIO of TH1520 does not support keeping power when entering STR, and the driver of AIC8800 does not support SDIO with this function. Therefore, this node is added here to meet the driver requirements of AIC8800.
3.support_power_ctrl:The newly added device node is used to control the WL-REG-ON signal (which controls the power of AIC8800) after waking up from STR.

Change-Id: Ia33309da9f3e6bdf291f408d26909f11afd24842

arch/riscv/boot/dts/thead/th1520-lpi4a.dtsi

@@ -274,6 +274,7 @@
 		pinctrl-0 = <&pinctrl_wifi_wake>;
 		wifi_chip_type = "rtl8723ds";
 		WIFI,poweren_gpio = <&pcal6408ahk_c 4 0>;
+		support_power_ctrl;
 		status = "okay";
 	};
 
@@ -992,12 +993,13 @@
 	pull_up;
 	no-sd;
 	no-mmc;
-	non-removable;
+	broken-cd;
 	io_fixed_1v8;
 	post-power-on-delay-ms = <50>;
 	wprtn_ignore;
 	cap-sd-highspeed;
 	wakeup-source;
+	keep-power-in-suspend;
 	status = "okay";
 };
 

net/rfkill/rfkill-wlan.c

@@ -60,6 +60,7 @@ struct rfkill_wlan_data {
 
 static struct rfkill_wlan_data *g_rfkill = NULL;
 static int power_set_time = 0;
+static int support_power_ctrl = 0; //Used to control whether power switch control is supported.
 
 static const char wlan_name[] = 
 #if defined (CONFIG_BCM4330)
@@ -660,6 +661,15 @@ static int wlan_platdata_parse_dt(struct device *dev,
 			LOG("%s: get property: WIFI,poweren_gpio = %d, flags = %d.\n", __func__, gpio, flags);
         } else data->power_n.io = -1;
 	gpio = of_get_named_gpio_flags(node, "WIFI,vbat_gpio", 0, &flags);
+
+    if (of_find_property(node, "support_power_ctrl", NULL)) {
+        support_power_ctrl = true;
+        LOG("%s: Turn off the power during suspension and turn it on when resuming, support_power_ctrl = %d.\n", __func__, support_power_ctrl);
+    } else {
+        support_power_ctrl = false;
+        LOG("%s: power is only turned on during initialization and is not controlled afterwards, support_power_ctrl = %d.\n", __func__, support_power_ctrl);
+    }
+
 	if (gpio_is_valid(gpio)) {
 			data->vbat_n.io = gpio;
 			data->vbat_n.enable = (flags == GPIO_ACTIVE_HIGH) ? 1:0;
@@ -901,12 +911,53 @@ static int rfkill_wlan_remove(struct platform_device *pdev)
 
 static int rfkill_wlan_suspend(struct platform_device *pdev, pm_message_t state)
 {
+    struct rfkill_wlan_data *mrfkill = g_rfkill;
+    struct rksdmmc_gpio *poweron, *reset;
+    poweron = &mrfkill->pdata->power_n;
+    reset = &mrfkill->pdata->reset_n;
+
+    // turn off the wifi's power
+    if( support_power_ctrl ){
+        if (gpio_is_valid(poweron->io)) {
+            gpio_set_value(poweron->io, !(poweron->enable));
+            msleep(100);
+        }
+
+        if (gpio_is_valid(reset->io)) {
+            gpio_set_value(reset->io, !(reset->enable));
+        }
+
+        wifi_power_state = 0;
+        LOG("wifi shut off power.\n");
+    }
+
     LOG("Enter %s\n", __func__);
     return 0;
 }
 
 static int rfkill_wlan_resume(struct platform_device *pdev)
 {
+    struct rfkill_wlan_data *mrfkill = g_rfkill;
+    struct rksdmmc_gpio *poweron, *reset;
+    poweron = &mrfkill->pdata->power_n;
+    reset = &mrfkill->pdata->reset_n;
+
+    // turn on the wifi's power
+    if( support_power_ctrl ){
+        if (gpio_is_valid(poweron->io)) {
+            gpio_set_value(poweron->io, poweron->enable);
+            msleep(500);
+        }
+
+        if (gpio_is_valid(reset->io)) {
+            gpio_set_value(reset->io, reset->enable);
+            msleep(100);
+        }
+
+        wifi_power_state = 1;
+        LOG("wifi turn on power. %d\n", poweron->io);
+    }
+
     LOG("Enter %s\n", __func__);
     return 0;
 }