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Diffstat (limited to 'firmware/target/arm/imx233/audioout-imx233.h')
-rw-r--r--firmware/target/arm/imx233/audioout-imx233.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/audioout-imx233.h b/firmware/target/arm/imx233/audioout-imx233.h
index b5c16767c6..88163e7ad2 100644
--- a/firmware/target/arm/imx233/audioout-imx233.h
+++ b/firmware/target/arm/imx233/audioout-imx233.h
@@ -27,6 +27,14 @@
#include "regs/regs-audioout.h"
+/* target-defined output stage coupling method
+ * its setting is IMX233_AUDIO_COUPLING_MODE and must be set for every target
+ * Use ACM_CAP if output stage (i.e. headphones) have output capacitors,
+ * ACM_CAPLESS (DC-coupled) otherwise.
+ */
+#define ACM_CAPLESS 0
+#define ACM_CAP 1
+
struct imx233_audioout_info_t
{
// NOTE there is a convention here: dac -> dacvol -> dacmute