LTE Module Series
SC20 Charging User Guide
SC20_Charging_User_Guide Confidential / Released 14 / 14
4.3. The Maximum Charging Time
A timer can be enabled in the driver files according to the configuration in DTS (qcom, tchg-mins). When
charging timer reaches the set time, the module will stop charging.
Set timer as follows:
static int qpnp_lbc_tchg_max_set(struct qpnp_lbc_chip *chip, int minutes)
{
xxx
/* Enable timer */
rc = qpnp_lbc_masked_write(chip, chip->chg CHG_TCHG_MAX_EN_REG,
CHG_TCHG_MAX_EN_BIT, CHG_TCHG_MAX_EN_BIT);
if (rc) {
pr_err("Failed to write tchg_max_en rc=%d\n", rc);
return rc;
}
return rc;
}
4.4. Abnormality
When the battery temperature crosses high temperature threshold or low temperature threshold, it will
stop charging.
4.5. Query Device Information
You can query battery temp/capacity /health information via adb tool, for example:
adb root
adb remount
adb shell
cat /sys/class/power_supply/battery/temp //Query battery temperature
cat /sys/class/power_supply/battery/capacity //Query battery capacity
cat /sys/class/power_supply/battery/health //Query battery status
cat /sys/class/power_supply/battery/ voltage_now //Query battery voltage
Quectel
Confidential
