diff options
Diffstat (limited to 'zephyr/Kconfig.usbc')
| -rw-r--r-- | zephyr/Kconfig.usbc | 46 |
1 files changed, 5 insertions, 41 deletions
diff --git a/zephyr/Kconfig.usbc b/zephyr/Kconfig.usbc index 082f96ca7f..903cf575c6 100644 --- a/zephyr/Kconfig.usbc +++ b/zephyr/Kconfig.usbc @@ -31,54 +31,18 @@ rsource "Kconfig.usb_charger" if PLATFORM_EC_USBC -config PLATFORM_EC_CHARGER_DEFAULT_CURRENT_LIMIT +config PLATFORM_EC_CHARGER_INPUT_CURRENT int "Charger input current in mA" depends on PLATFORM_EC_CHARGE_MANAGER default 512 help - Default input current limit for the board in mA. + This is the default input current for the board in mA. Many boards + also use this as the least maximum input current during transients. This value should depend on external power adapter, designed charging voltage, and the maximum power of the running system. For type-C - chargers, this should be set to no more than 512 mA in order to not - brown-out low-current USB charge ports in accordance with USB-PD r3.0 - Sec. 7.3. - -config PLATFORM_EC_CHARGER_MIN_INPUT_CURRENT_LIMIT - int "Minimum charger input current limit in mA" - default 0 - depends on PLATFORM_EC_CHARGE_MANAGER - help - Minimum current limit in mA that will ever be set for chargers, even if a - lower limit is requested. - - If set, this should usually be set to no more than 2.5W divided by the - maximum supported input voltage in order to satisfy USB-PD pSnkStdby - requirements. Higher values may help devices stay alive under low-battery - conditions at the cost of violating standby power limits. - - Many boards set this to large values, since historically this number was - usually equal to the default current limit. New boards should avoid doing - so if possible, and usually leave this unset: customization of - board_set_charge_limit() should be considered instead if a device sometimes - requires amounts of power in violation of specs, to limit those violations - only to situations where they are necessary. - -config PLATFORM_EC_CHARGER_INPUT_CURRENT_DERATE_PCT - int "Charger input current derating percentage" - default 0 - depends on PLATFORM_EC_CHARGE_MANAGER - help - Setting this to a nonzero value causes actual charger current limits - to be adjusted by the given percentage. For example, setting this to - 4 and requesting a current limit of 1000 mA causes the charge manager - to program an actual current limit of 960 mA. - - This is useful if a charger consistently draws more current than the - programmed limit, or if it is desired to derate for other - safety-related reasons. If a more complex (non-linear) adjustment is - required, boards should override the board_set_charge_limit() - function instead of configuring this option. + chargers, this should be set to 512 mA in order to not brown-out + low-current USB charge ports in accordance with USB-PD r3.0 Sec. 7.3 config PLATFORM_EC_USBC_OCP bool |