cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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gpio-charger.yaml (2708B)

      1# SPDX-License-Identifier: GPL-2.0
      2%YAML 1.2
      3---
      4$id: http://devicetree.org/schemas/power/supply/gpio-charger.yaml#
      5$schema: http://devicetree.org/meta-schemas/core.yaml#
      6
      7title: simple battery chargers only communicating through GPIOs
      8
      9maintainers:
     10  - Sebastian Reichel <sre@kernel.org>
     11
     12description:
     13  This binding is for all chargers, which are working more or less
     14  autonomously, only providing some status GPIOs and possibly some
     15  GPIOs for limited control over the charging process.
     16
     17properties:
     18  compatible:
     19    const: gpio-charger
     20
     21  charger-type:
     22    enum:
     23      - unknown
     24      - battery
     25      - ups
     26      - mains
     27      - usb-sdp                   # USB standard downstream port
     28      - usb-dcp                   # USB dedicated charging port
     29      - usb-cdp                   # USB charging downstream port
     30      - usb-aca                   # USB accessory charger adapter
     31    description:
     32      Type of the charger, e.g. "mains" for a wall charger.
     33
     34  gpios:
     35    maxItems: 1
     36    description: GPIO indicating the charger presence
     37
     38  charge-status-gpios:
     39    maxItems: 1
     40    description: GPIO indicating the charging status
     41
     42  charge-current-limit-gpios:
     43    minItems: 1
     44    maxItems: 32
     45    description: GPIOs used for current limiting
     46
     47  charge-current-limit-mapping:
     48    description: List of tuples with current in uA and a GPIO bitmap (in
     49      this order). The tuples must be provided in descending order of the
     50      current limit.
     51    $ref: /schemas/types.yaml#/definitions/uint32-matrix
     52    items:
     53      items:
     54        - description:
     55            Current limit in uA
     56        - description:
     57            Encoded GPIO setting. Bit 0 represents last GPIO from the
     58            charge-current-limit-gpios property. Bit 1 second to last
     59            GPIO and so on.
     60
     61required:
     62  - compatible
     63
     64anyOf:
     65  - required:
     66      - gpios
     67  - required:
     68      - charge-status-gpios
     69  - required:
     70      - charge-current-limit-gpios
     71
     72dependencies:
     73  charge-current-limit-gpios: [ charge-current-limit-mapping ]
     74  charge-current-limit-mapping: [ charge-current-limit-gpios ]
     75
     76additionalProperties: false
     77
     78examples:
     79  - |
     80    #include <dt-bindings/gpio/gpio.h>
     81
     82    charger {
     83      compatible = "gpio-charger";
     84      charger-type = "usb-sdp";
     85
     86      gpios = <&gpd 28 GPIO_ACTIVE_LOW>;
     87      charge-status-gpios = <&gpc 27 GPIO_ACTIVE_LOW>;
     88
     89      charge-current-limit-gpios = <&gpioA 11 GPIO_ACTIVE_HIGH>,
     90                                   <&gpioA 12 GPIO_ACTIVE_HIGH>;
     91      charge-current-limit-mapping = <2500000 0x00>, // 2.5 A => both GPIOs low
     92                                     <700000 0x01>, // 700 mA => GPIO A.12 high
     93                                     <0 0x02>; // 0 mA => GPIO A.11 high
     94    };