Hi, On Fri, May 01, 2020 at 12:51:17PM -0500, Dan Murphy wrote: > From: Ricardo Rivera-Matos <[email protected]> > > Description: > The BQ2515X family of devices are highly integrated battery management > ICs that integrate the most common functions for wearbale devices > namely a charger, an output voltage rail, ADC for battery and system > monitoring, and a push-button controller. > > Datasheets: > http://www.ti.com/lit/ds/symlink/bq25150.pdf > http://www.ti.com/lit/ds/symlink/bq25155.pdf > > CC: Rob Herring <[email protected]> > Signed-off-by: Ricardo Rivera-Matos <[email protected]> > --- > .../bindings/power/supply/bq2515x.yaml | 99 +++++++++++++++++++ > 1 file changed, 99 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/power/supply/bq2515x.yaml > > diff --git a/Documentation/devicetree/bindings/power/supply/bq2515x.yaml > b/Documentation/devicetree/bindings/power/supply/bq2515x.yaml > new file mode 100644 > index 000000000000..673caf67a993 > --- /dev/null > +++ b/Documentation/devicetree/bindings/power/supply/bq2515x.yaml > @@ -0,0 +1,99 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +# Copyright (C) 2020 Texas Instruments Incorporated > +%YAML 1.2 > +--- > +$id: "http://devicetree.org/schemas/power/supply/bq2515x.yaml#"; > +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; > + > +title: TI bq2515x 500-mA Linear charger family > + > +maintainers: > + - Dan Murphy <[email protected]> > + > +description: | > + The BQ2515x family is a highly integrated battery charge management IC that > + integrates the most common functions for wearable devices, namely a > charger, > + an output voltage rail, ADC for battery and system monitoring, and > + push-button controller. > + > + Specifications about the charger can be found at: > + http://www.ti.com/lit/ds/symlink/bq25150.pdf > + http://www.ti.com/lit/ds/symlink/bq25155.pdf > + > +properties: > + compatible: > + enum: > + - ti,bq25150 > + - ti,bq25155 > + > + reg: > + maxItems: 1 > + > + ac_detect-gpios: > + description: | > + GPIO used for connecting the bq2515x device PG (AC Detect) > + pin. This pin should be used if possible as this is the > + recommended way to obtain the charger's input PG state. > + If this pin is not specified a software-based approach for PG > + detection is used.
No _ in DT properties, please use ac-detect-gpios as I wrote in PATCHv4.
> + reset-gpios:
> + description: |
> + GPIO used for hardware reset.
> +
> + low-power-gpios:
> + description: |
> + GPIO used for low power mode of IC.
> +
> + charge-enable-gpios:
> + description: |
> + GPIO used to turn on and off charging.
> +
> + constant-charge-current-max-microamp:
> + description: |
> + Maximum charging current in micro Amps.
> + minimum: 50000
> + maximum: 600000
> +
> + precharge-current-max-microamp:
> + description: |
> + Maximum precharging current in micro Amps.
> + minimum: 1250
> + maximum: 77500
> +
> + input-current-limit-microamp:
> + description: |
> + Maximum input current in micro Amps.
> + minimum: 50000
> + maximum: 500000
> +
> + constant-charge-voltage-max-microvolt:
> + description: |
> + Maximum charging voltage in micro volts.
> + minimum: 3600000
> + maximum: 4600000
The following properties describe battery properties
and should go into a simple-battery node, which is
referenced by the charger. Then you get the properties
in the driver via power_supply_get_battery_info():
constant-charge-current-max-microamp
constant-charge-voltage-max-microvolt
precharge-current-max-microamp
The binding for simple-battery can be found here:
Documentation/devicetree/bindings/power/supply/battery.txt
(still needs to be converted to YAML)
> +
> +required:
> + - compatible
> + - reg
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> + i2c0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + charger@6b {
> + compatible = "ti,bq25150";
> + reg = <0x6b>;
> +
> + ac_detect-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
> + low-power-gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;
> + charge-enable-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
> + constant-charge-current-max-microamp = <300000>;
> + constant-charge-voltage-max-microvolt = <4200000>;
> + precharge-current-max-microamp = <2500>;
> + input-current-limit-microamp = <100000>;
bogus indention
> + };
> + };
-- Sebastian
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