diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 841a936..7134a8f 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -346,6 +346,9 @@
     sbirq	- IRQ # for CMI8330 chip (SB16)
     sbdma8	- 8bit DMA # for CMI8330 chip (SB16)
     sbdma16	- 16bit DMA # for CMI8330 chip (SB16)
+    fmport	- (optional) OPL3 I/O port
+    mpuport	- (optional) MPU401 I/O port
+    mpuirq	- (optional) MPU401 irq #
 
     This module supports multiple cards and autoprobe.