Re: [PATCH] power: supply: Add driver for TI BQ2416X battery charger

From: Liam Breck
Date: Mon Feb 06 2017 - 22:01:24 EST


G'day,

On 7 Feb 2017 at 01:09:09, Wojciech Ziemba wrote:
> diff --git a/Documentation/devicetree/bindings/power/supply/bq2416x.txt
> b/Documentation/devicetree/bindings/power/supply/bq2416x.txt
> new file mode 100644
> index 0000000..8f4b814
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/supply/bq2416x.txt

DT docs are usually added/amended in a separate patch.

> @@ -0,0 +1,71 @@
> +Binding for TI bq2416x Li-Ion Charger
> ...
> +Optional properties:
> +===================
> +- interrupt-names: Meanigfull irq name.
> +- ti,charge-voltage: Charge volatge [mV].
> +- ti,charge-current: Charge current [mA].
> +- ti,termination-current: Termination current [mA}.
> +- ti,in-current-limit: IN source current limit. enum:
> + - IN_CURR_LIM_1500MA (0)
> + - IN_CURR_LIM_2500MA (1)
> +
> +- ti,usb-current-limit: USB source current limit. enum:
> + - USB_CURR_LIM_100MA (0)
> + - USB_CURR_LIM_150MA (1)
> + - USB_CURR_LIM_500MA (2)
> + - USB_CURR_LIM_800MA (3)
> + - USB_CURR_LIM_900MA (4)
> + - USB_CURR_LIM_1500MA (5)

DT values are usually uA, uV, uAh, etc.
DT properties usually get a unit suffix, e.g. -microamp.
See Documentation/devicetree/bindings/property-units.txt
and https://patchwork.kernel.org/patch/9555541/

> +- ti,status-pin-enable: 0 or 1. Enable charge status output STAT pin.
> +- ti,current-termination-enable:0 or 1. Enable charge current termination.
> +- ti,usb-dpm-voltage: USB dpm voltage [mV]. Refer to datasheet.
> +- ti,in-dpm-voltage: IN dpm voltage [mV].
> +- ti,safety-timer: Safety timer. enum:
> + - TMR_27MIN (0)
> + - TMR_6H (1)
> + - TMR_9H (2)
> + - TMR_OFF (3)
> +
> +- ti,supplied-to: string array: max 4. Names of devices to which
> + the charger supplies.

You might want to use and/or add to power_supply_battery_info, which
Sebastian asked for, see:
https://patchwork.kernel.org/patch/9555539/
https://patchwork.kernel.org/patch/9555545/
https://patchwork.kernel.org/patch/9555547/
https://patchwork.kernel.org/patch/9555549/

I'm also at work on a patch for BQ24190 which adds:
battery:precharge-current-microamp -> info.precharge_current_ua ->
POWER_SUPPLY_PROP_PRECHARGE_CURRENT
battery:endcharge-current-microamp -> info.endcharge_current_ua ->
POWER_SUPPLY_PROP_ENDCHARGE_CURRENT

Hope that helps!