linux-kernel - Re: [PATCH v3 11/18] dt-bindings: power: supply: add AXP20X/AXP22X battery DT binding

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Date:   Tue, 21 Feb 2017 19:05:28 +0100
From:   Quentin Schulz <quentin.schulz@...e-electrons.com>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     knaack.h@....de, Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sebastian Reichel <sre@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Lee Jones <lee.jones@...aro.org>, linux-iio@...r.kernel.org,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Icenowy Zheng <icenowy@...c.xyz>,
        Bruno Prémont <bonbons@...ux-vserver.org>
Subject: Re: [PATCH v3 11/18] dt-bindings: power: supply: add AXP20X/AXP22X
 battery DT binding

Hi Chen-Yu,

On 21/02/2017 05:45, Chen-Yu Tsai wrote:
> On Tue, Feb 14, 2017 at 5:41 PM, Quentin Schulz
> <quentin.schulz@...e-electrons.com> wrote:
>> The X-Powers AXP20X and AXP22X PMICs can have a battery as power supply.
>>
>> This patch adds the DT binding documentation for the battery power
>> supply which gets various data from the PMIC, such as the battery status
>> (charging, discharging, full, dead), current max limit, current current,
>> battery capacity (in percentage), voltage max and min limits, current
>> voltage and battery capacity (in Ah).
>>
>> Signed-off-by: Quentin Schulz <quentin.schulz@...e-electrons.com>
>> Acked-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
>> ---
>>
>> v3:
>>  - removed constant charge current property, now should use the WIP
>>  battery framework,
> 
> IIRC this should also include a property for referencing the battery?
> 

Indeed.

Quentin

> Otherwise,
> 
> Acked-by: Chen-Yu Tsai <wens@...e.org>
> 
>>
>> v2:
>>  - changed DT node name from ac_power_supply to ac-power-supply,
>>  - removed io-channels and io-channel-names from DT (the IIO mapping is
>>  done in the IIO ADC driver now),
>>  - added x-powers,constant-charge-current property to set the maximal
>>  default constant current charge of the battery,
>>
>>  .../bindings/power/supply/axp20x_battery.txt         | 20 ++++++++++++++++++++
>>  1 file changed, 20 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/power/supply/axp20x_battery.txt
>>
>> diff --git a/Documentation/devicetree/bindings/power/supply/axp20x_battery.txt b/Documentation/devicetree/bindings/power/supply/axp20x_battery.txt
>> new file mode 100644
>> index 0000000..c248866
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/power/supply/axp20x_battery.txt
>> @@ -0,0 +1,20 @@
>> +AXP20x and AXP22x battery power supply
>> +
>> +Required Properties:
>> + - compatible, one of:
>> +                       "x-powers,axp209-battery-power-supply"
>> +                       "x-powers,axp221-battery-power-supply"
>> +
>> +This node is a subnode of the axp20x/axp22x PMIC.
>> +
>> +The AXP20X and AXP22X can read the battery voltage, charge and discharge
>> +currents of the battery by reading ADC channels from the AXP20X/AXP22X
>> +ADC.
>> +
>> +Example:
>> +
>> +&axp209 {
>> +       battery_power_supply: battery-power-supply {
>> +               compatible = "x-powers,axp209-battery-power-supply";
>> +       }
>> +};
>> --
>> 2.9.3
>>

-- 
Quentin Schulz, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com