To enable fast clock support on 5GHz for AR9280 v2.0+ chips,
mac version alone is not sufficient. It also depends on eeprom
values.

Cc: sta...@kernel.org
Cc: Adrian Chadd <adr...@freebsd.org>
Cc: Felix Fietkau <n...@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmano...@qca.qualcomm.com>
---
 drivers/net/wireless/ath/ath9k/hw.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/hw.c 
b/drivers/net/wireless/ath/ath9k/hw.c
index 284d2a4..d8d776f9 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2184,7 +2184,10 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
                        pCap->hw_caps |= ATH9K_HW_CAP_PAPRD;
        } else {
                pCap->tx_desc_len = sizeof(struct ath_desc);
-               if (AR_SREV_9280_20(ah))
+               if (AR_SREV_9280_20(ah) &&
+                   ((ah->eep_ops->get_eeprom(ah, EEP_MINOR_REV) <=
+                                             AR5416_EEP_MINOR_VER_16) ||
+                    ah->eep_ops->get_eeprom(ah, EEP_FSTCLK_5G)))
                        pCap->hw_caps |= ATH9K_HW_CAP_FASTCLOCK;
        }
 
-- 
1.7.6.1

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