Month: September 2013

  • More notes on USB OTG charging Nexus 7 (2013)

    in msm_chg_aca_detect(), we always end up in the default case when the cable is plugged in. The function calls ulpi_read(phy, 0x87). This always returns 0 (even tho I think ID_A is set based on my 124K resister from pin 4 to 5), which other parts of the system seem to agree, e.g. the smb345 etc. […]