Unlike previous AXP PMICs, the AXP813 PMIC (and AXP803) supports port detection defined in USB Battery Charging Specification 1.2, and sets the real Vbus current based on a pre-defined value (which is the original Vbus current limitation field) and the port status. However, the detection needs manual activision. If it's not active, the PMIC will assume a SDP and limit the Vbus current to 500mA.
This patchset contains two patches, one enables the USB BC 1.2 detection, the other exports the real applied Vbus limitation. Icenowy Zheng (2): power: supply: axp20x_usb_power: enable USB BC detection on AXP813 power: supply: axp20x_usb_power: add applied max Vbus support for AXP813 drivers/power/supply/axp20x_usb_power.c | 140 +++++++++++++++++++++++- 1 file changed, 137 insertions(+), 3 deletions(-) -- 2.21.0