linux-kernel - Re: [linux-sunxi] Re: [RFC PATCH 6/7] arm64: allwinner: a64: add power supply nodes in AXP803 DTSI

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Date:   Mon, 25 Sep 2017 17:19:07 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Icenowy Zheng <icenowy@...c.io>
Cc:     Quentin Schulz <quentin.schulz@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-iio@...r.kernel.org,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [linux-sunxi] Re: [RFC PATCH 6/7] arm64: allwinner: a64: add
 power supply nodes in AXP803 DTSI

On Mon, Sep 25, 2017 at 5:14 PM, Icenowy Zheng <icenowy@...c.io> wrote:
>
>
> 于 2017年9月25日 GMT+08:00 下午5:11:57, Quentin Schulz <quentin.schulz@...e-electrons.com> 写到:
>>Hi Icenowy,
>>
>>On 20/09/2017 17:18, Icenowy Zheng wrote:
>>> AXP803 PMIC features AC/USB/Battery power supplies.
>>>
>>> As we have now the device tree bindings for them, add device tree
>>> nodes for them.
>>>
>>> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
>>> ---
>>>  arch/arm64/boot/dts/allwinner/axp803.dtsi | 15 +++++++++++++++
>>>  1 file changed, 15 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/allwinner/axp803.dtsi
>>b/arch/arm64/boot/dts/allwinner/axp803.dtsi
>>> index ff8af52743ff..3a8615231b7c 100644
>>> --- a/arch/arm64/boot/dts/allwinner/axp803.dtsi
>>> +++ b/arch/arm64/boot/dts/allwinner/axp803.dtsi
>>> @@ -49,6 +49,16 @@
>>>      interrupt-controller;
>>>      #interrupt-cells = <1>;
>>>
>>> +    ac_power_supply: ac-power-supply {
>>> +            compatible = "x-powers,axp221-ac-power-supply";
>>> +            status = "disabled";
>>> +    };
>>> +
>>> +    battery_power_supply: battery-power-supply {
>>> +            compatible = "x-powers,axp803-battery-power-supply";
>>> +            status = "disabled";
>>> +    };
>>> +
>>>      regulators {
>>>              /* Default work frequency for buck regulators */
>>>              x-powers,dcdc-freq = <3000>;
>>> @@ -147,4 +157,9 @@
>>>                      regulator-name = "rtc-ldo";
>>>              };
>>>      };
>>> +
>>> +    usb_power_supply: usb_power_supply {
>>> +            compatible = "x-powers,axp803-usb-power-supply";
>>> +            status = "disabled";
>>> +    };
>>
>>No. You have added support for the AC and battery power supply drivers
>>in this patchset, not for USB.
>
> But I added its device tree binding.

Please do both at the same time. If you only add the binding without
the driver, how can you be sure the binding would be a proper fit?
Moreover, no one can actually test it.

ChenYu