From 49309a0c32b23d2e2db668bcdd24fec7052f08e7 Mon Sep 17 00:00:00 2001
From: GuEe-GUI <2991707448@qq.com>
Date: Sat, 13 Dec 2025 01:03:02 +0800
Subject: [PATCH] [dm][pinctrl] Set pinctrl default auto in platform bus.

Signed-off-by: GuEe-GUI <2991707448@qq.com>
---
 components/drivers/core/platform.c     | 7 +++++++
 components/drivers/serial/dev_serial.c | 5 -----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/components/drivers/core/platform.c b/components/drivers/core/platform.c
index c3a141654a8..907ea14b1ee 100644
--- a/components/drivers/core/platform.c
+++ b/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)
diff --git a/components/drivers/serial/dev_serial.c b/components/drivers/serial/dev_serial.c
index 3ebe3063ace..45bf97c3289 100644
--- a/components/drivers/serial/dev_serial.c
+++ b/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)
     {