--- /dev/null
+--- a/arch/mips/ath79/dev-wmac.c
++++ b/arch/mips/ath79/dev-wmac.c
+@@ -140,6 +140,8 @@ static void ar934x_wmac_setup(void)
+ ath79_wmac_data.is_clk_25mhz = false;
+ else
+ ath79_wmac_data.is_clk_25mhz = true;
++
++ ath79_wmac_data.get_mac_revision = ar93xx_get_soc_revision;
+ }
+
+ static void qca955x_wmac_setup(void)