diff --git a/device/arista/x86_64-arista_720dt_48s/td3x2-a720dt-48s-flex.config.bcm b/device/arista/x86_64-arista_720dt_48s/td3x2-a720dt-48s-flex.config.bcm
index a89c3e442753..033a19a9f06d 100644
--- a/device/arista/x86_64-arista_720dt_48s/td3x2-a720dt-48s-flex.config.bcm
+++ b/device/arista/x86_64-arista_720dt_48s/td3x2-a720dt-48s-flex.config.bcm
@@ -300,3 +300,4 @@ sram_scan_enable.0=0
 stable_size=0x5500000
 tdma_timeout_usec.0=15000000
 tslam_timeout_usec.0=15000000
+sai_mdio_access_clause22=1
diff --git a/src/sonic-device-data/tests/permitted_list b/src/sonic-device-data/tests/permitted_list
index 012e547f62ea..3175e096cd11 100644
--- a/src/sonic-device-data/tests/permitted_list
+++ b/src/sonic-device-data/tests/permitted_list
@@ -317,4 +317,5 @@ sai_verify_incoming_chksum
 phy_an_lt_msft
 system_ref_core_clock_khz
 xflow_macsec_secure_chan_to_num_secure_assoc_encrypt
-xflow_macsec_secure_chan_to_num_secure_assoc_decrypt
\ No newline at end of file
+xflow_macsec_secure_chan_to_num_secure_assoc_decrypt
+sai_mdio_access_clause22