linux-kernel - Re: [PATCH 04/38] dt-bindings: power: supply: bq25890: Convert to DT schema format

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Date:   Mon, 15 Mar 2021 12:21:34 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Sebastian Reichel <sebastian.reichel@...labora.com>
Cc:     Sebastian Reichel <sre@...nel.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Collabora Kernel ML <kernel@...labora.com>
Subject: Re: [PATCH 04/38] dt-bindings: power: supply: bq25890: Convert to DT
 schema format

On Fri, Mar 12, 2021 at 8:44 AM Sebastian Reichel
<sebastian.reichel@...labora.com> wrote:
>
> Convert the binding to DT schema format.
>
> Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> ---
>  .../bindings/power/supply/bq25890.txt         |  60 ---------
>  .../bindings/power/supply/bq25890.yaml        | 125 ++++++++++++++++++
>  2 files changed, 125 insertions(+), 60 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/power/supply/bq25890.txt
>  create mode 100644 Documentation/devicetree/bindings/power/supply/bq25890.yaml
>
> diff --git a/Documentation/devicetree/bindings/power/supply/bq25890.txt b/Documentation/devicetree/bindings/power/supply/bq25890.txt
> deleted file mode 100644
> index 805040c6fff9..000000000000
> --- a/Documentation/devicetree/bindings/power/supply/bq25890.txt
> +++ /dev/null
> @@ -1,60 +0,0 @@
> -Binding for TI bq25890 Li-Ion Charger
> -
> -This driver will support the bq25892, the bq25896 and the bq25890. There are
> -other ICs in the same family but those have not been tested.
> -
> -Required properties:
> -- compatible: Should contain one of the following:
> -    * "ti,bq25890"
> -    * "ti,bq25892"
> -    * "ti,bq25895"
> -    * "ti,bq25896"
> -- reg: integer, i2c address of the device.
> -- interrupts: interrupt line;
> -- ti,battery-regulation-voltage: integer, maximum charging voltage (in uV);
> -- ti,charge-current: integer, maximum charging current (in uA);
> -- ti,termination-current: integer, charge will be terminated when current in
> -    constant-voltage phase drops below this value (in uA);
> -- ti,precharge-current: integer, maximum charge current during precharge
> -    phase (in uA);
> -- ti,minimum-sys-voltage: integer, when battery is charging and it is below
> -    minimum system voltage, the system will be regulated above
> -    minimum-sys-voltage setting (in uV);
> -- ti,boost-voltage: integer, VBUS voltage level in boost mode (in uV);
> -- ti,boost-max-current: integer, maximum allowed current draw in boost mode
> -    (in uA).
> -
> -Optional properties:
> -- ti,boost-low-freq: boolean, if present boost mode frequency will be 500kHz,
> -    otherwise 1.5MHz;
> -- ti,use-ilim-pin: boolean, if present the ILIM resistor will be used and the
> -    input current will be the lower between the resistor setting and the IINLIM
> -    register setting;
> -- ti,thermal-regulation-threshold: integer, temperature above which the charge
> -    current is lowered, to avoid overheating (in degrees Celsius). If omitted,
> -    the default setting will be used (120 degrees);
> -- ti,ibatcomp-micro-ohms: integer, value of a resistor in series with
> -    the battery;
> -- ti,ibatcomp-clamp-microvolt: integer, maximum charging voltage adjustment due
> -    to expected voltage drop on in-series resistor;
> -
> -Example:
> -
> -bq25890 {
> -       compatible = "ti,bq25890";
> -       reg = <0x6a>;
> -
> -       interrupt-parent = <&gpio1>;
> -       interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
> -
> -       ti,battery-regulation-voltage = <4200000>;
> -       ti,charge-current = <1000000>;
> -       ti,termination-current = <50000>;
> -       ti,precharge-current = <128000>;
> -       ti,minimum-sys-voltage = <3600000>;
> -       ti,boost-voltage = <5000000>;
> -       ti,boost-max-current = <1000000>;
> -
> -       ti,use-ilim-pin;
> -       ti,thermal-regulation-threshold = <120>;
> -};
> diff --git a/Documentation/devicetree/bindings/power/supply/bq25890.yaml b/Documentation/devicetree/bindings/power/supply/bq25890.yaml
> new file mode 100644
> index 000000000000..de6e03ec120c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/supply/bq25890.yaml
> @@ -0,0 +1,125 @@
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (C) 2021 Sebastian Reichel
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/power/supply/bq25890.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Binding for bq25890, bq25892, bq25895 and bq25896 Li-Ion Charger
> +
> +maintainers:
> +  - Sebastian Reichel <sre@...nel.org>
> +
> +allOf:
> +  - $ref: power-supply.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,bq25890
> +      - ti,bq25892
> +      - ti,bq25895
> +      - ti,bq25896
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  ti,battery-regulation-voltage:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: maximum charging voltage (in uV)
> +
> +  ti,charge-current:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: maximum charging current (in uA)
> +
> +  ti,termination-current:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      charge will be terminated when current in constant-voltage phase
> +      drops below this value (in uA)
> +
> +  ti,precharge-current:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: maximum charge current during precharge phase (in uA)
> +
> +  ti,minimum-sys-voltage:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      when battery is charging and it is below minimum system voltage,
> +      the system will be regulated above minimum-sys-voltage setting (in uV)
> +
> +  ti,boost-voltage:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: VBUS voltage level in boost mode (in uV)
> +
> +  ti,boost-max-current:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: maximum allowed current draw in boost mode (in uA)
> +
> +  ti,boost-low-freq:
> +    description: boost mode frequency will be 500kHz, otherwise 1.5MHz
> +    type: boolean
> +
> +  ti,use-ilim-pin:
> +    description: |
> +      ILIM resistor will be used and the input current will be the lower
> +      between the resistor setting and the IINLIM register setting
> +    type: boolean
> +
> +  ti,thermal-regulation-threshold:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |
> +      temperature above which the charge current is lowered, to avoid overheating
> +      (in degrees Celsius). If omitted, the default setting will be used (120 degrees)
> +
> +  ti,ibatcomp-micro-ohms:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: value of a resistor in series with the battery (in Micro Ohms)
> +
> +  ti,ibatcomp-clamp-microvolt:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: max. charging voltage adjustment due to expected voltage drop on in-series resistor

You don't need a type $ref on properties with a standard unit suffix.
Though it looks like there's some non-standard ones (-microvolts) in
the series.

Rob