[dm][dvfs] support Dynamic Voltage and Frequency Scaling (DVFS)

1. Support DVFS and finsh cmd, there are 6 governors:
   - conservative
   - freedom
   - performance
   - powersave
   - schedutil
2. Support DVFS for SCMI.
3. Port the Cooling device for DVFS.
4. Port the PM with DVFS.

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

1 files changed, 21 insertions, 1 deletions

diff --git a/components/drivers/pm/pm.c b/components/drivers/pm/pm.c
index b4ad3b2bbd..9acbf00147 100644
--- a/components/drivers/pm/pm.c
+++ b/components/drivers/pm/pm.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006-2024 RT-Thread Development Team
+ * Copyright (c) 2006-2026 RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -11,11 +11,15 @@
  * 2020-11-23     zhangsz      update pm mode select
  * 2020-11-27     zhangsz      update pm 2.0
  * 2024-07-04     wdfk-prog    The device is registered and uninstalled by linked list
+ * 2026-06-12     GuEe-GUI     port DVFS support
  */
 
 #include <rthw.h>
 #include <rtthread.h>
 #include <drivers/pm.h>
+#ifdef RT_USING_DVFS
+#include <drivers/dvfs.h>
+#endif
 #include <stdlib.h>
 
 #ifdef RT_USING_PM
@@ -119,6 +123,14 @@ static rt_err_t _pm_device_suspend(rt_uint8_t mode)
         device_pm = rt_slist_entry(node, struct rt_device_pm, list);
         if (device_pm->ops != RT_NULL && device_pm->ops->suspend != RT_NULL)
         {
+        #ifdef RT_USING_DVFS
+            ret = rt_dvfs_scaling_pm_suspend(device_pm, mode);
+            if (ret != RT_EOK)
+            {
+                break;
+            }
+        #endif /* RT_USING_DVFS */
+
             ret = device_pm->ops->suspend(device_pm->device, mode);
             if(ret != RT_EOK)
             {
@@ -144,6 +156,10 @@ static void _pm_device_resume(rt_uint8_t mode)
         if (device_pm->ops != RT_NULL && device_pm->ops->resume != RT_NULL)
         {
             device_pm->ops->resume(device_pm->device, mode);
+
+        #ifdef RT_USING_DVFS
+            rt_dvfs_scaling_pm_resume(device_pm, mode);
+        #endif
         }
     }
 }
@@ -161,6 +177,10 @@ static void _pm_device_frequency_change(rt_uint8_t mode)
         device_pm = rt_slist_entry(node, struct rt_device_pm, list);
         if (device_pm->ops->frequency_change != RT_NULL)
         {
+        #ifdef RT_USING_DVFS
+            rt_dvfs_scaling_pm_frequency_change(device_pm, mode);
+        #endif
+
             device_pm->ops->frequency_change(device_pm->device, mode);
         }
     }