From: Dan Murphy <dmurphy@xxxxxx> Convert the battery.txt file to yaml and fix up the examples. Signed-off-by: Dan Murphy <dmurphy@xxxxxx> --- .../bindings/power/supply/battery.txt | 82 +--------- .../bindings/power/supply/battery.yaml | 143 ++++++++++++++++++ 2 files changed, 144 insertions(+), 81 deletions(-) create mode 100644 Documentation/devicetree/bindings/power/supply/battery.yaml diff --git a/Documentation/devicetree/bindings/power/supply/battery.txt b/Documentation/devicetree/bindings/power/supply/battery.txt index 3049cf88bdcf..b9a81621ce59 100644 --- a/Documentation/devicetree/bindings/power/supply/battery.txt +++ b/Documentation/devicetree/bindings/power/supply/battery.txt @@ -1,81 +1 @@ -Battery Characteristics - -The devicetree battery node provides static battery characteristics. -In smart batteries, these are typically stored in non-volatile memory -on a fuel gauge chip. The battery node should be used where there is -no appropriate non-volatile memory, or it is unprogrammed/incorrect. - -Upstream dts files should not include battery nodes, unless the battery -represented cannot easily be replaced in the system by one of a -different type. This prevents unpredictable, potentially harmful, -behavior should a replacement that changes the battery type occur -without a corresponding update to the dtb. - -Required Properties: - - compatible: Must be "simple-battery" - -Optional Properties: - - 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 - - precharge-current-microamp: current for pre-charge phase - - 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 - - factory-internal-resistance-micro-ohms: battery factory internal resistance - - ocv-capacity-table-0: An array providing the open circuit voltage (OCV) - of the battery and corresponding battery capacity percent, which is used - to look up battery capacity according to current OCV value. And the open - circuit voltage unit is microvolt. - - ocv-capacity-table-1: Same as ocv-capacity-table-0 - ...... - - ocv-capacity-table-n: Same as ocv-capacity-table-0 - - ocv-capacity-celsius: An array containing the temperature in degree Celsius, - for each of the battery capacity lookup table. The first temperature value - specifies the OCV table 0, and the second temperature value specifies the - OCV table 1, and so on. - - resistance-temp-table: An array providing the temperature in degree Celsius - and corresponding battery internal resistance percent, which is used to look - up the resistance percent according to current temperature to get a accurate - batterty internal resistance in different temperatures. - -Battery properties are named, where possible, for the corresponding -elements in enum power_supply_property, defined in -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/linux/power_supply.h - -Batteries must be referenced by chargers and/or fuel-gauges -using a phandle. The phandle's property should be named -"monitored-battery". - -Example: - - bat: battery { - compatible = "simple-battery"; - voltage-min-design-microvolt = <3200000>; - voltage-max-design-microvolt = <4200000>; - energy-full-design-microwatt-hours = <5290000>; - charge-full-design-microamp-hours = <1430000>; - precharge-current-microamp = <256000>; - charge-term-current-microamp = <128000>; - constant-charge-current-max-microamp = <900000>; - constant-charge-voltage-max-microvolt = <4200000>; - factory-internal-resistance-micro-ohms = <250000>; - ocv-capacity-celsius = <(-10) 0 10>; - ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>, ...; - ocv-capacity-table-1 = <4200000 100>, <4185000 95>, <4113000 90>, ...; - ocv-capacity-table-2 = <4250000 100>, <4200000 95>, <4185000 90>, ...; - resistance-temp-table = <20 100>, <10 90>, <0 80>, <(-10) 60>; - }; - - charger: charger@11 { - .... - monitored-battery = <&bat>; - ... - }; - - fuel_gauge: fuel-gauge@22 { - .... - monitored-battery = <&bat>; - ... - }; +The contents of this file has been moved to battery.yaml diff --git a/Documentation/devicetree/bindings/power/supply/battery.yaml b/Documentation/devicetree/bindings/power/supply/battery.yaml new file mode 100644 index 000000000000..f0b544a22219 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/battery.yaml @@ -0,0 +1,143 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/battery.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Battery Characteristics + +maintainers: + - Sebastian Reichel <sre@xxxxxxxxxx> + +description: | + The devicetree battery node provides static battery characteristics. + In smart batteries, these are typically stored in non-volatile memory + on a fuel gauge chip. The battery node should be used where there is + no appropriate non-volatile memory, or it is unprogrammed/incorrect. + + Upstream dts files should not include battery nodes, unless the battery + represented cannot easily be replaced in the system by one of a + different type. This prevents unpredictable, potentially harmful, + behavior should a replacement that changes the battery type occur + without a corresponding update to the dtb. + + Battery properties are named, where possible, for the corresponding elements + in enum power_supply_property, defined in include/linux/power_supply.h + + Batteries must be referenced by chargers and/or fuel-gauges using a phandle. + The phandle's property should be named "monitored-battery". + +properties: + compatible: + const: simple-battery + + voltage-min-design-microvolt: + $ref: /schemas/types.yaml#/definitions/uint32 + description: drained battery voltage + + voltage-max-design-microvolt: + $ref: /schemas/types.yaml#/definitions/uint32 + description: fully charged battery voltage + + energy-full-design-microwatt-hours: + $ref: /schemas/types.yaml#/definitions/uint32 + description: battery design energy + + charge-full-design-microamp-hours: + $ref: /schemas/types.yaml#/definitions/uint32 + description: battery design capacity + + precharge-current-microamp: + $ref: /schemas/types.yaml#/definitions/uint32 + description: current for pre-charge phase + + charge-term-current-microamp: + $ref: /schemas/types.yaml#/definitions/uint32 + description: current for charge termination phase + + constant-charge-current-max-microamp: + $ref: /schemas/types.yaml#/definitions/uint32 + description: maximum constant input current + + constant-charge-voltage-max-microvolt: + $ref: /schemas/types.yaml#/definitions/uint32 + description: maximum constant input voltage + + factory-internal-resistance-micro-ohms: + $ref: /schemas/types.yaml#/definitions/uint32 + description: battery factory internal resistance + + ocv-capacity-table-0: + $ref: /schemas/types.yaml#/definitions/uint32-matrix + description: | + An array providing the open circuit voltage (OCV) + of the battery and corresponding battery capacity percent, which is used + to look up battery capacity according to current OCV value. And the open + circuit voltage unit is microvolt. + + ocv-capacity-table-1: + $ref: /schemas/types.yaml#/definitions/uint32-matrix + description: Same as ocv-capacity-table-0 + + ocv-capacity-table-n: + $ref: /schemas/types.yaml#/definitions/uint32-matrix + description: Same as ocv-capacity-table-0 + + ocv-capacity-celsius: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: | + An array containing the temperature in degree Celsius, + for each of the battery capacity lookup table. The first temperature value + specifies the OCV table 0, and the second temperature value specifies the + OCV table 1, and so on. + + resistance-temp-table: + $ref: /schemas/types.yaml#/definitions/uint32-matrix + description: | + An array providing the temperature in degree Celsius + and corresponding battery internal resistance percent, which is used to + look up the resistance percent according to current temperature to get an + accurate batterty internal resistance in different temperatures. + + monitored-battery: + $ref: /schemas/types.yaml#/definitions/phandle + description: phandle to the battery node being monitored + +required: + - compatible + +additionalProperties: false + +examples: + - | + power { + #address-cells = <1>; + #size-cells = <0>; + + battery:battery { + compatible = "simple-battery"; + voltage-min-design-microvolt = <3200000>; + voltage-max-design-microvolt = <4200000>; + energy-full-design-microwatt-hours = <5290000>; + charge-full-design-microamp-hours = <1430000>; + precharge-current-microamp = <256000>; + charge-term-current-microamp = <128000>; + constant-charge-current-max-microamp = <900000>; + constant-charge-voltage-max-microvolt = <4200000>; + factory-internal-resistance-micro-ohms = <250000>; + ocv-capacity-celsius = <(-10) 0 10>; + ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>; + ocv-capacity-table-1 = <4200000 100>, <4185000 95>, <4113000 90>; + resistance-temp-table = <20 100>, <10 90>, <0 80>, <(-10) 60>; + }; + + charger:charger@11 { + reg = <0x11>; + monitored-battery = <&battery>; + }; + + fuel_gauge:fuel-gauge@22 { + reg = <0x22>; + monitored-battery = <&battery>; + }; + }; -- 2.26.2
