--- a/arch/mips/ath79/dev-wmac.c
+++ b/arch/mips/ath79/dev-wmac.c
@@ -147,6 +147,8 @@ 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 qca953x_wmac_setup(void)
