diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index e75d8e8..75e2363 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1952,6 +1952,9 @@
 	if (AR_SREV_9300_20_OR_LATER(ah))
 		pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
 
+	if (AR_SREV_9300_20_OR_LATER(ah))
+		ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
+
 	if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
 		pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;