diff options
| -rw-r--r-- | board/spring/usb_charging.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/board/spring/usb_charging.c b/board/spring/usb_charging.c index 66b6ad667c..b919ec851b 100644 --- a/board/spring/usb_charging.c +++ b/board/spring/usb_charging.c @@ -25,6 +25,13 @@ #define POWERED_DEVICE_TYPE (TSU6721_TYPE_OTG | \ TSU6721_TYPE_JIG_UART_ON) +/* PWM controlled current limit */ +#define I_LIMIT_500MA 85 +#define I_LIMIT_1000MA 70 +#define I_LIMIT_1500MA 50 +#define I_LIMIT_2000MA 35 +#define I_LIMIT_3000MA 0 + static enum ilim_config current_ilim_config = ILIM_CONFIG_MANUAL_OFF; static void board_ilim_use_gpio(void) @@ -130,10 +137,25 @@ static void usb_device_change(int dev_type) else gpio_set_level(GPIO_BOOST_EN, 1); - if (dev_type & TSU6721_TYPE_VBUS_DEBOUNCED) + if (dev_type & TSU6721_TYPE_VBUS_DEBOUNCED) { + /* Limit USB port current. 500mA for not listed types. */ + int current_limit = I_LIMIT_500MA; + if (dev_type & TSU6721_TYPE_CHG12) + current_limit = I_LIMIT_3000MA; + else if (dev_type & TSU6721_TYPE_APPLE_CHG) { + /* TODO: Distinguish 1A/2A chargers. */ + current_limit = I_LIMIT_1000MA; + } else if ((dev_type & TSU6721_TYPE_CDP) || + (dev_type & TSU6721_TYPE_DCP)) + current_limit = I_LIMIT_1500MA; + + board_pwm_duty_cycle(current_limit); + + /* Turns on battery LED */ lp5562_poweron(); - else + } else { lp5562_poweroff(); + } /* Log to console */ CPRINTF("[%T USB Attached: "); |