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2824fa6963
This patch makes some improvements to the MT7620 RF calibration. 1. Move MT7620 PA/LNA calibration code to dedicated functions. 2. Restore RF and BBP registers before R-Calibration. 3. Do Rx DCOC calibration again before RXIQ calibration. 4. Use SoC specific AGC initial LNA value. 5. Correct MAC_RX_EN mask in rt2800_r_calibration()[1]. [1] This change may fix the "BBP/RF register access failed" error: ieee80211 phy0: rt2800_wait_bbp_rf_ready: Error - BBP/RF register access failed, aborting Signed-off-by: Shiji Yang <yangshiji66@qq.com>