| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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 <sre@kernel.org> |
| 11 | |
| 12 | description: | |
| 13 | Battery compatible with the smart battery system specifications |
| 14 | |
| 15 | allOf: |
| 16 | - $ref: power-supply.yaml# |
| 17 | |
| 18 | properties: |
| 19 | compatible: |
| 20 | oneOf: |
| 21 | - items: |
| 22 | - enum: |
| 23 | - ti,bq20z45 |
| 24 | - ti,bq20z65 |
| 25 | - ti,bq20z75 |
| 26 | - enum: |
| 27 | - sbs,sbs-battery |
| 28 | - items: |
| 29 | - const: sbs,sbs-battery |
| 30 | |
| 31 | reg: |
| 32 | maxItems: 1 |
| 33 | |
| 34 | sbs,i2c-retry-count: |
| 35 | description: |
| 36 | The number of times to retry I2C transactions on I2C IO failure. |
| 37 | default: 0 |
| 38 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 39 | |
| 40 | sbs,poll-retry-count: |
| 41 | description: |
| 42 | The number of times to try looking for new status after an external |
| 43 | change notification. |
| 44 | default: 0 |
| 45 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 46 | |
| 47 | sbs,battery-detect-gpios: |
| 48 | description: |
| 49 | GPIO which signals battery detection. If this is not supplied, the bus |
| 50 | needs to be polled to detect the battery. |
| 51 | maxItems: 1 |
| 52 | |
| 53 | sbs,disable-charger-broadcasts: |
| 54 | description: |
| 55 | SBS batteries by default send broadcast messages to SBS compliant chargers to |
| 56 | configure max. charge current/voltage. If your hardware does not have an SBS |
| 57 | compliant charger it should be disabled via this property to avoid blocking |
| 58 | the bus. Also some SBS battery fuel gauges are known to have a buggy multi- |
| 59 | master implementation. |
| 60 | type: boolean |
| 61 | |
| 62 | required: |
| 63 | - compatible |
| 64 | - reg |
| 65 | |
| 66 | unevaluatedProperties: false |
| 67 | |
| 68 | examples: |
| 69 | - | |
| 70 | #include <dt-bindings/gpio/gpio.h> |
| 71 | |
| 72 | i2c { |
| 73 | #address-cells = <1>; |
| 74 | #size-cells = <0>; |
| 75 | |
| 76 | battery@b { |
| 77 | compatible = "ti,bq20z75", "sbs,sbs-battery"; |
| 78 | reg = <0xb>; |
| 79 | sbs,i2c-retry-count = <2>; |
| 80 | sbs,poll-retry-count = <10>; |
| 81 | sbs,battery-detect-gpios = <&gpio 122 GPIO_ACTIVE_HIGH>; |
| 82 | sbs,disable-charger-broadcasts; |
| 83 | }; |
| 84 | }; |