| Message ID | a834eda9015145e978da16d89857b78669a2b9c8.1582617178.git.matti.vaittinen@fi.rohmeurope.com |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | Support ROHM BD99954 charger IC | expand |
| Context | Check | Description |
|---|---|---|
| robh/checkpatch | success |
On Tue, 25 Feb 2020 10:52:04 +0200, Matti Vaittinen wrote: > Add: > > - trickle-charge-current-microamp: > > Some chargers have 3 charging stages. First one when battery is almost > empty is often called as trickle-charge. Last state when battery has been > "woken up" is usually called as fast-charge. In addition to this some > chargers have a 'middle state' which ROHM BD99954 data-sheet describes as > pre-charge. Some batteries can benefit from this 3-phase charging > [citation needed]. > > Introduce trickle-charge-current-microamp so that batteries can give > charging current limit for all three states. > > - precharge-upper-limit-microvolt: > > When battery voltage has reached certain limit we change from > trickle-charge to next charging state (pre-charge for BD99954). Allow > battery to specify this limit. > > - re-charge-voltage-microvolt: > > Allow giving a battery specific voltage limit for chargers which can > automatically re-start charging when battery has discharghed down to > this limit. > > - over-voltage-threshold-microvolt > > Allow specifying voltage threshold after which the battery is assumed to > be faulty. > > Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> > --- > > Changes from rfc-v3: > Fixed typo in commit message battry => battery > > Documentation/devicetree/bindings/power/supply/battery.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/power/supply/battery.txt b/Documentation/devicetree/bindings/power/supply/battery.txt index 3049cf88bdcf..5e29595edd74 100644 --- a/Documentation/devicetree/bindings/power/supply/battery.txt +++ b/Documentation/devicetree/bindings/power/supply/battery.txt @@ -11,15 +11,21 @@ different type. This prevents unpredictable, potentially harmful, behavior should a replacement that changes the battery type occur without a corresponding update to the dtb. +Please note that not all charger drivers respect all of the properties. + Required Properties: - compatible: Must be "simple-battery" Optional Properties: + - over-voltage-threshold-microvolt: battery over-voltage limit + - re-charge-voltage-microvolt: limit to automatically start charging again - voltage-min-design-microvolt: drained battery voltage - voltage-max-design-microvolt: fully charged battery voltage - energy-full-design-microwatt-hours: battery design energy - charge-full-design-microamp-hours: battery design capacity + - trickle-charge-current-microamp: current for trickle-charge phase - precharge-current-microamp: current for pre-charge phase + - precharge-upper-limit-microvolt: limit when to change to constant charging - charge-term-current-microamp: current for charge termination phase - constant-charge-current-max-microamp: maximum constant input current - constant-charge-voltage-max-microvolt: maximum constant input voltage
Add: - trickle-charge-current-microamp: Some chargers have 3 charging stages. First one when battery is almost empty is often called as trickle-charge. Last state when battery has been "woken up" is usually called as fast-charge. In addition to this some chargers have a 'middle state' which ROHM BD99954 data-sheet describes as pre-charge. Some batteries can benefit from this 3-phase charging [citation needed]. Introduce trickle-charge-current-microamp so that batteries can give charging current limit for all three states. - precharge-upper-limit-microvolt: When battery voltage has reached certain limit we change from trickle-charge to next charging state (pre-charge for BD99954). Allow battery to specify this limit. - re-charge-voltage-microvolt: Allow giving a battery specific voltage limit for chargers which can automatically re-start charging when battery has discharghed down to this limit. - over-voltage-threshold-microvolt Allow specifying voltage threshold after which the battery is assumed to be faulty. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> --- Changes from rfc-v3: Fixed typo in commit message battry => battery Documentation/devicetree/bindings/power/supply/battery.txt | 6 ++++++ 1 file changed, 6 insertions(+)