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Jeffrey Lee authored
Detail: s/IIC - Only adjust the pin mux settings for the pins + IIC controller which we're using, the other pins/controllers might be being used for another purpose (on Pi 3 GPIO0/SDA0 seems related to power control/under-voltage detection) Admin: Tested on Pi 3 Fixes constant rainbow square (under-volt warning) shown by firmware and inability to scale clock speed above default Version 0.53. Tagged as 'BCM2835-0_53'
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