Hello, All, I have a configuration where I want to use an AR9283 device in a Diversity only scenario (without MIMO). Radio chipset is connected to an AR7241 SoC and is running OpenWRT Linux distro.
Device is being used as bridged station (Not AP) and has 2 chains, connected to different antennas, with different lines of sight (MIMO does not seem to work efficiently on this configuration). Since I am not able to disable chain0 from the nl80211 interface (using iw command), I was considering changing the AR9280_PHY_RXGAIN_TXRX_ATTEN and AR_PHY_SWITCH_CHAIN_0 I would like to have a configuration where the firmware with the help of a userspace application would pickup the radio that has the best coverage to the current access point, as suggested by AdrianChadd on this link: https://wiki.freebsd.org/dev/ath_hal%284%29/AntennaDiversityAR5416Slow I tried writing some values to the AR9280_PHY_RXGAIN_TXRX_ATTEN and also to the AR_PHY_SWITCH_CHAIN_0 registers but the values I used do not seem to make any difference on the behavior of chain0 or chain1. How are the values I write on AR9280_PHY_RXGAIN_TXRX_ATTEN and AR_PHY_SWITCH_CHAIN_0 registers translated inside the Qualcomm Atheros AR9283? Is there any documentation publicly available explaining how that works? Thanks in advance, Luiz Oliveira Neto
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