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-rw-r--r--firmware/export/pcm_mixer.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/firmware/export/pcm_mixer.h b/firmware/export/pcm_mixer.h
index b418a5d347..3d255a7345 100644
--- a/firmware/export/pcm_mixer.h
+++ b/firmware/export/pcm_mixer.h
@@ -30,6 +30,10 @@
#if CONFIG_CPU == PP5002
/* There's far less time to do mixing because HW FIFOs are short */
#define MIX_FRAME_SAMPLES 64
+#elif (CONFIG_CPU == JZ4760B) || (CONFIG_CPU == JZ4732)
+/* These MIPS32r1 targets have a very high interrupt latency, which
+ unfortunately causes a lot of audio underruns under even moderate load */
+#define MIX_FRAME_SAMPLES 2048
#elif (CONFIG_PLATFORM & PLATFORM_MAEMO5) || defined(DX50) || defined(DX90)
/* Maemo 5 needs 2048 samples for decent performance.
Otherwise the locking overhead inside gstreamer costs too much */