diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index b1b74cfb1571..bdab9345bdd8 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -1069,5 +1069,9 @@ static int __init pwm_debugfs_init(void)
 
 	return 0;
 }
+#ifdef CONFIG_ROCKCHIP_THUNDER_BOOT
+postcore_initcall(pwm_debugfs_init);
+#else
 subsys_initcall(pwm_debugfs_init);
+#endif
 #endif /* CONFIG_DEBUG_FS */
diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c
index 72bdda4ccebf..096720845c4b 100644
--- a/drivers/pwm/sysfs.c
+++ b/drivers/pwm/sysfs.c
@@ -422,4 +422,8 @@ static int __init pwm_sysfs_init(void)
 {
 	return class_register(&pwm_class);
 }
+#ifdef CONFIG_ROCKCHIP_THUNDER_BOOT
+postcore_initcall(pwm_sysfs_init);
+#else
 subsys_initcall(pwm_sysfs_init);
+#endif