vbus-usable may not get set if power is provided through both the power barrel connector and external 5v is also present on the otg connector, at least on boards where vbus is also controlled through the axp221-pmic.
One way to reproduce this is to bootup an Ippo-q8h board with a usb-host cable plugged into the otg (so that it will get powered), then unplug the usb-host cable and plug in a charger, and then do "reset" on the u-boot console, vbus-usable will then report 0, leading to uboot trying to provide power to the otg port even though external 5v is present, this commit fixes this.
Signed-off-by: Hans de Goede hdegoede@redhat.com --- drivers/power/axp221.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c index f758a75..dc3a7f1 100644 --- a/drivers/power/axp221.c +++ b/drivers/power/axp221.c @@ -424,7 +424,7 @@ int axp_gpio_get_value(unsigned int pin) if (ret) return ret;
- return !!(val & AXP221_POWER_STATUS_VBUS_USABLE); + return !!(val & AXP221_POWER_STATUS_VBUS_AVAIL); default: return -EINVAL; }