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-rw-r--r--firmware/export/pcm_sw_volume.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/firmware/export/pcm_sw_volume.h b/firmware/export/pcm_sw_volume.h
index b5d70654a1..5088eadeb1 100644
--- a/firmware/export/pcm_sw_volume.h
+++ b/firmware/export/pcm_sw_volume.h
@@ -21,6 +21,12 @@
#ifndef PCM_SW_VOLUME_H
#define PCM_SW_VOLUME_H
+/***
+ ** Note: Only PCM drivers that are themselves buffered should use the
+ ** PCM_SW_VOLUME_UNBUFFERED configuration. This may be part of the platform,
+ ** the library or a hardware necessity. Normally, it shouldn't be used and
+ ** only the port developer can properly decide.
+ **/
#ifdef HAVE_SW_VOLUME_CONTROL
#include <audiohw.h>