[dm][pinctrl] Set pinctrl default auto in platform bus.

Signed-off-by: GuEe-GUI <[email protected]>

Author: GuEe-GUI

components/drivers/core/platform.c

@@ -119,6 +119,13 @@ static rt_err_t platform_probe(rt_device_t dev)
     struct rt_ofw_node *np = dev->ofw_node;
 #endif
 
+#ifdef RT_USING_PINCTRL
+    if (rt_pin_ctrl_confs_apply_by_name(dev, RT_NULL))
+    {
+        rt_pin_ctrl_confs_apply(dev, 0);
+    }
+#endif
+
     err = rt_dm_power_domain_attach(dev, RT_TRUE);
 
     if (err && err != -RT_EEMPTY)

components/drivers/serial/dev_serial.c

@@ -664,11 +664,6 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
     /* get open flags */
     dev->open_flag = oflag & 0xff;
 
-#ifdef RT_USING_PINCTRL
-    /* initialize iomux in DM */
-    rt_pin_ctrl_confs_apply_by_name(dev, RT_NULL);
-#endif
-
     /* initialize the Rx/Tx structure according to open flag */
     if (serial->serial_rx == RT_NULL)
     {