diff --git a/tools/topology/sof/pipe-amp-ref-capture.m4 b/tools/topology/sof/pipe-amp-ref-capture.m4
index 67285cb80..c5ff324c7 100644
--- a/tools/topology/sof/pipe-amp-ref-capture.m4
+++ b/tools/topology/sof/pipe-amp-ref-capture.m4
@@ -38,6 +38,17 @@ ifdef(`SMART_REF_PPL_ID',`',`errprint(note: Need to define Echo Ref pipeline ID
 ifdef(`SMART_REF_CH_NUM',`',`errprint(note: Need to define Echo Ref channel number for sof-smart-amplifier
 )')
 
+ifelse(SMART_FB_CHANNELS, `8',
+`define(`FB_CHMAP',`0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80')',
+`define(`FB_CHMAP',`0x01,0x02,0x04,0x08,0x00,0x00,0x00,0x00')'
+)
+
+ifelse(SMART_REF_CHANNELS, `8',
+`define(`REF_CHMAP',`0x01,0x02,0x04,0x08,0x00,0x00,0x00,0x00')',
+`define(`REF_CHMAP',`0x01,0x04,0x00,0x00,0x00,0x00,0x00,0x00')'
+)
+
+
 # should be aligned with struct sof_mux_config, used for mux input/output configuration.
 CONTROLBYTES_PRIV(DEMUX_priv,
 `       bytes "0x53,0x4f,0x46,0x00,0x00,0x00,0x00,0x00,'
@@ -45,10 +56,8 @@ CONTROLBYTES_PRIV(DEMUX_priv,
 `       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
 `       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
 `       COMP_FORMAT_VALUE(PIPELINE_FORMAT),0x00,DEC2HEX(SMART_RX_CHANNELS),0x00,0x02,0x00,0x00,0x00,'
-`       DEC2HEX(SMART_PB_PPL_ID),0x00,0x00,0x00,DEC2HEX(SMART_FB_CHANNELS),0x01,0x02,0x04,'
-`       0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,'
-`       DEC2HEX(SMART_REF_PPL_ID),0x00,0x00,0x00,DEC2HEX(SMART_REF_CH_NUM),0x01,0x02,0x04,'
-`       0x08,0x00,0x00,0x00,0x00,0x00,0x00,0x00"'
+`       DEC2HEX(SMART_PB_PPL_ID),0x00,0x00,0x00,DEC2HEX(SMART_FB_CHANNELS),FB_CHMAP,0x00,0x00,0x00,'
+`       DEC2HEX(SMART_REF_PPL_ID),0x00,0x00,0x00,DEC2HEX(SMART_REF_CH_NUM),REF_CHMAP,0x00,0x00,0x00"'
 )
 
 # demux Bytes control with max value of 255