|
| 1 | +# SPDX-License-Identifier: GPL-2.0 |
| 2 | +%YAML 1.2 |
| 3 | +--- |
| 4 | +$id: http://devicetree.org/schemas/power/supply/sbs,sbs-battery.yaml# |
| 5 | +$schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | + |
| 7 | +title: SBS compliant battery |
| 8 | + |
| 9 | +maintainers: |
| 10 | + - Sebastian Reichel <[email protected]> |
| 11 | + |
| 12 | +description: | |
| 13 | + Battery compatible with the smart battery system specifications |
| 14 | +
|
| 15 | +properties: |
| 16 | + |
| 17 | + compatible: |
| 18 | + oneOf: |
| 19 | + - items: |
| 20 | + - enum: |
| 21 | + - ti,bq20z65 |
| 22 | + - ti,bq20z75 |
| 23 | + - enum: |
| 24 | + - sbs,sbs-battery |
| 25 | + - items: |
| 26 | + - const: sbs,sbs-battery |
| 27 | + |
| 28 | + reg: |
| 29 | + maxItems: 1 |
| 30 | + |
| 31 | + sbs,i2c-retry-count: |
| 32 | + description: |
| 33 | + The number of times to retry I2C transactions on I2C IO failure. |
| 34 | + default: 0 |
| 35 | + allOf: |
| 36 | + - $ref: /schemas/types.yaml#/definitions/uint32 |
| 37 | + |
| 38 | + sbs,poll-retry-count: |
| 39 | + description: |
| 40 | + The number of times to try looking for new status after an external |
| 41 | + change notification. |
| 42 | + default: 0 |
| 43 | + allOf: |
| 44 | + - $ref: /schemas/types.yaml#/definitions/uint32 |
| 45 | + |
| 46 | + sbs,battery-detect-gpios: |
| 47 | + description: |
| 48 | + GPIO which signals battery detection. If this is not supplied, the bus |
| 49 | + needs to be polled to detect the battery. |
| 50 | + maxItems: 1 |
| 51 | + |
| 52 | + sbs,disable-charger-broadcasts: |
| 53 | + description: |
| 54 | + SBS batteries by default send broadcast messages to SBS compliant chargers to |
| 55 | + configure max. charge current/voltage. If your hardware does not have an SBS |
| 56 | + compliant charger it should be disabled via this property to avoid blocking |
| 57 | + the bus. Also some SBS battery fuel gauges are known to have a buggy multi- |
| 58 | + master implementation. |
| 59 | + type: boolean |
| 60 | + |
| 61 | +required: |
| 62 | + - compatible |
| 63 | + - reg |
| 64 | + |
| 65 | +additionalProperties: false |
| 66 | + |
| 67 | +examples: |
| 68 | + - | |
| 69 | + #include <dt-bindings/gpio/gpio.h> |
| 70 | +
|
| 71 | + i2c { |
| 72 | + #address-cells = <1>; |
| 73 | + #size-cells = <0>; |
| 74 | +
|
| 75 | + battery@b { |
| 76 | + compatible = "ti,bq20z75", "sbs,sbs-battery"; |
| 77 | + reg = <0xb>; |
| 78 | + sbs,i2c-retry-count = <2>; |
| 79 | + sbs,poll-retry-count = <10>; |
| 80 | + sbs,battery-detect-gpios = <&gpio 122 GPIO_ACTIVE_HIGH>; |
| 81 | + sbs,disable-charger-broadcasts; |
| 82 | + }; |
| 83 | + }; |
0 commit comments