Hello All,
    In ath9k, only BT co-existence for 2-wire interface is selected for AR9287. 
Please refer to the code section below in btcoex.c. Does that mean the 3-wire 
interface based drivers available for AR9285 and AR9300+ cannot be used for 
AR9287?
 
if (AR_SREV_9300_20_OR_LATER(ah)) {
  btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
  btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9300;
  btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9300;
  btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9300;
 } else if (AR_SREV_9280_20_OR_LATER(ah)) {
  btcoex_hw->btactive_gpio = ATH_BTACTIVE_GPIO_9280;
  btcoex_hw->wlanactive_gpio = ATH_WLANACTIVE_GPIO_9280;
  if (AR_SREV_9285(ah)) {
   btcoex_hw->scheme = ATH_BTCOEX_CFG_3WIRE;
   btcoex_hw->btpriority_gpio = ATH_BTPRIORITY_GPIO_9285;
  } else {
   btcoex_hw->scheme = ATH_BTCOEX_CFG_2WIRE;
  }
 
Regards
Sandeep
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