Fixup Audio startup and add to documents (#13606)

* Fixup Audio startup and add to documents

* fix doc descriptions

2 files changed, 4 insertions, 1 deletions

diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c
index 46277dd70..49bb309e8 100644
--- a/quantum/audio/audio.c
+++ b/quantum/audio/audio.c
@@ -139,6 +139,9 @@ void audio_init() {
         audio_initialized = true;
     }
     stop_all_notes();
+#ifndef AUDIO_INIT_DELAY
+    audio_startup();
+#endif
 }
 
 void audio_startup(void) {
diff --git a/quantum/quantum.c b/quantum/quantum.c
index d17338871..e60378afe 100644
--- a/quantum/quantum.c
+++ b/quantum/quantum.c
@@ -398,7 +398,7 @@ void matrix_init_quantum() {
 }
 
 void matrix_scan_quantum() {
-#if defined(AUDIO_ENABLE)
+#if defined(AUDIO_ENABLE) && defined(AUDIO_INIT_DELAY)
     // There are some tasks that need to be run a little bit
     // after keyboard startup, or else they will not work correctly
     // because of interaction with the USB device state, which