Add the bindings for the bq256xx series of battery charging ICs. Datasheets: - https://www.ti.com/lit/ds/symlink/bq25600.pdf - https://www.ti.com/lit/ds/symlink/bq25601.pdf - https://www.ti.com/lit/ds/symlink/bq25600d.pdf - https://www.ti.com/lit/ds/symlink/bq25601d.pdf - https://www.ti.com/lit/ds/symlink/bq25611d.pdf - https://www.ti.com/lit/ds/symlink/bq25618.pdf - https://www.ti.com/lit/ds/symlink/bq25619.pdf Reviewed-by: Rob Herring <robh@xxxxxxxxxx> Signed-off-by: Ricardo Rivera-Matos <r-rivera-matos@xxxxxx> v4 - documents monitored-battery and interrupts, fixes example for ti,watchdog-timeout-ms --- .../bindings/power/supply/bq256xx.yaml | 110 ++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/bq256xx.yaml diff --git a/Documentation/devicetree/bindings/power/supply/bq256xx.yaml b/Documentation/devicetree/bindings/power/supply/bq256xx.yaml new file mode 100644 index 000000000000..18b54783e11a --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/bq256xx.yaml @@ -0,0 +1,110 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +# Copyright (C) 2020 Texas Instruments Incorporated +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/power/supply/bq256xx.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: TI bq256xx Switch Mode Buck Charger + +maintainers: + - Ricardo Rivera-Matos <r-rivera-matos@xxxxxx> + +description: | + The bq256xx devices are a family of highly-integrated battery charge + management and system power management ICs for single cell Li-ion and Li- + polymer batteries. + + Datasheets: + - https://www.ti.com/lit/ds/symlink/bq25600.pdf + - https://www.ti.com/lit/ds/symlink/bq25601.pdf + - https://www.ti.com/lit/ds/symlink/bq25600d.pdf + - https://www.ti.com/lit/ds/symlink/bq25601d.pdf + - https://www.ti.com/lit/ds/symlink/bq25611d.pdf + - https://www.ti.com/lit/ds/symlink/bq25618.pdf + - https://www.ti.com/lit/ds/symlink/bq25619.pdf + +properties: + compatible: + enum: + - ti,bq25600 + - ti,bq25601 + - ti,bq25600d + - ti,bq25601d + - ti,bq25611d + - ti,bq25618 + - ti,bq25619 + + reg: + maxItems: 1 + + ti,watchdog-timeout-ms: + $ref: /schemas/types.yaml#/definitions/uint32 + default: 0 + description: | + Watchdog timer in ms. 0 (default) disables the watchdog + minimum: 0 + maximum: 160000 + enum: [ 0, 40000, 80000, 160000] + + input-voltage-limit-microvolt: + description: | + Minimum input voltage limit in µV with a 100000 µV step + minimum: 3900000 + maximum: 5400000 + + input-current-limit-microamp: + description: | + Maximum input current limit in µA with a 100000 µA step + minimum: 100000 + maximum: 3200000 + + monitored-battery: + $ref: /schemas/types.yaml#/definitions/phandle + description: phandle to the battery node being monitored + + interrupts: + maxItems: 1 + description: | + Interrupt sends an active low, 256 μs pulse to host to report the charger + device status and faults. + +required: + - compatible + - reg + - monitored-battery + +additionalProperties: false + +examples: + - | + bat: battery { + compatible = "simple-battery"; + constant-charge-current-max-microamp = <2040000>; + constant-charge-voltage-max-microvolt = <4352000>; + precharge-current-microamp = <180000>; + charge-term-current-microamp = <180000>; + }; + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + i2c { + + clock-frequency = <400000>; + + #address-cells = <1>; + #size-cells = <0>; + + charger@6b { + compatible = "ti,bq25601"; + reg = <0x6b>; + monitored-battery = <&bat>; + + interrupt-parent = <&gpio1>; + interrupts = <16 IRQ_TYPE_EDGE_FALLING>; + ti,watchdog-timeout-ms = <40000>; + + input-voltage-limit-microvolt = <4500000>; + input-current-limit-microamp = <2400000>; + }; + }; +... -- 2.28.0
