From c4aa24c54e5fbb01e553b319b66bf84df9204b17 Mon Sep 17 00:00:00 2001
From: morris <maoshengrong@espressif.com>
Date: Tue, 13 Sep 2022 15:54:05 +0800
Subject: [PATCH] rmt: disable rc_fast clock when it's used up

---
 components/driver/rmt/rmt_common.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/components/driver/rmt/rmt_common.c b/components/driver/rmt/rmt_common.c
index 09911b729c..e3dc6ed448 100644
--- a/components/driver/rmt/rmt_common.c
+++ b/components/driver/rmt/rmt_common.c
@@ -74,6 +74,7 @@ rmt_group_t *rmt_acquire_group_handle(int group_id)
 void rmt_release_group_handle(rmt_group_t *group)
 {
     int group_id = group->group_id;
+    rmt_clock_source_t clk_src = group->clk_src;
     bool do_deinitialize = false;
 
     _lock_acquire(&s_platform.mutex);
@@ -88,6 +89,16 @@ void rmt_release_group_handle(rmt_group_t *group)
     }
     _lock_release(&s_platform.mutex);
 
+    switch (clk_src) {
+#if SOC_RMT_SUPPORT_RC_FAST
+    case RMT_CLK_SRC_RC_FAST:
+        periph_rtc_dig_clk8m_disable();
+        break;
+#endif // SOC_RMT_SUPPORT_RC_FAST
+    default:
+        break;
+    }
+
     if (do_deinitialize) {
         ESP_LOGD(TAG, "del group(%d)", group_id);
     }