diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/platform-config/r0/src/lib/x86-64-accton-as7312-54x-r0.yml b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/platform-config/r0/src/lib/x86-64-accton-as7312-54x-r0.yml
index cc11bcf6..45051486 100644
--- a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/platform-config/r0/src/lib/x86-64-accton-as7312-54x-r0.yml
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54x/platform-config/r0/src/lib/x86-64-accton-as7312-54x-r0.yml
@@ -23,6 +23,8 @@ x86-64-accton-as7312-54x-r0:
     args: >-
       nopat
       console=ttyS1,115200n8
+      i2c-ismt.bus_speed=100
+      i2c-ismt.delay=100
 
   ##network
   ##  interfaces:
diff --git a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/platform-config/r0/src/lib/x86-64-accton-as7312-54xs-r0.yml b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/platform-config/r0/src/lib/x86-64-accton-as7312-54xs-r0.yml
index d649eb5c..a1d10a4b 100644
--- a/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/platform-config/r0/src/lib/x86-64-accton-as7312-54xs-r0.yml
+++ b/packages/platforms/accton/x86-64/x86-64-accton-as7312-54xs/platform-config/r0/src/lib/x86-64-accton-as7312-54xs-r0.yml
@@ -23,6 +23,8 @@ x86-64-accton-as7312-54xs-r0:
     args: >-
       nopat
       console=ttyS1,115200n8
+      i2c-ismt.bus_speed=100
+      i2c-ismt.delay=100
 
   ##network
   ##  interfaces: