Dear Developers, I have a Yuncore XD3200 device contains QCA9563 and ext. PA (SKY65174-21). I would like to use LEDE however the TX is very low on 2.4 GHz. I experience the following on the client (AP TX-Power 20 dBm 100mW): - with QSDK (the device's factory software) the TX level is -40 dBm - with LEDE 17.01.4 (ath9k) the TX level is -51 dBm In the following post there is workaround mentioned to fix the issue on LEDE. QCA9561 PA bias level: set AR_CH0_TOP_XPABIASLVL instead of AR_CH0_TOP2_XPABIASLVL https://forum.lede-project.org/t/xd3200-qca9563-slow-ath9k-2-4ghz-lna-pa/1320 https://github.com/oe1rfc/lede-qca9561-pa-bias/commit/88dcdee6b0b86d489afb9bc54010c04063695e5e @@ -0,0 +1,15 @@ +--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c ++++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c +@@ -3538,9 +3538,10 @@ static void ar9003_hw_xpa_bias_level_app + int bias = ar9003_modal_header(ah, is2ghz)->xpaBiasLvl; + + if (AR_SREV_9485(ah) || AR_SREV_9330(ah) || AR_SREV_9340(ah) || +- AR_SREV_9531(ah) || AR_SREV_9561(ah)) ++ AR_SREV_9531(ah)) + REG_RMW_FIELD(ah, AR_CH0_TOP2, AR_CH0_TOP2_XPABIASLVL, bias); +- else if (AR_SREV_9462(ah) || AR_SREV_9550(ah) || AR_SREV_9565(ah)) ++ else if (AR_SREV_9462(ah) || AR_SREV_9550(ah) || AR_SREV_9565(ah) || ++ AR_SREV_9561(ah)) + REG_RMW_FIELD(ah, AR_CH0_TOP, AR_CH0_TOP_XPABIASLVL, bias); + else { + REG_RMW_FIELD(ah, AR_CH0_TOP, AR_CH0_TOP_XPABIASLVL, bias); And indeed it seems the patch fixes the problem. TX level becomes the same on LEDE as on QSDK. Could you please help me if it is a ath9k issue or there is a problem with the XD3200 device? Thank you! David
