linux-kernel - Re: [PATCH 07/22] dt-bindings: power: supply: add AXP20X/AXP22X AC power supply

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Date:   Wed, 4 Jan 2017 07:14:10 -0600
From:   Rob Herring <robh@...nel.org>
To:     Quentin Schulz <quentin.schulz@...e-electrons.com>
Cc:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net, mark.rutland@....com, wens@...e.org,
        sre@...nel.org, linux@...linux.org.uk,
        maxime.ripard@...e-electrons.com, lee.jones@...aro.org,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        thomas.petazzoni@...e-electrons.com, icenowy@...c.xyz,
        bonbons@...ux-vserver.org
Subject: Re: [PATCH 07/22] dt-bindings: power: supply: add AXP20X/AXP22X AC
 power supply

On Mon, Jan 02, 2017 at 05:37:07PM +0100, Quentin Schulz wrote:
> The X-Powers AXP20X and AXP22X PMICs have an AC entry to supply power to
> the board. They have a few registers dedicated to the status of the AC
> power supply.
> 
> This adds the DT binding documentation for the AC power supply for
> AXP20X and AXP22X PMICs.
> 
> Signed-off-by: Quentin Schulz <quentin.schulz@...e-electrons.com>
> ---
>  .../bindings/power/supply/axp20x_ac_power.txt      | 28 ++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/supply/axp20x_ac_power.txt
> 
> diff --git a/Documentation/devicetree/bindings/power/supply/axp20x_ac_power.txt b/Documentation/devicetree/bindings/power/supply/axp20x_ac_power.txt
> new file mode 100644
> index 0000000..16d0de4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/supply/axp20x_ac_power.txt
> @@ -0,0 +1,28 @@
> +AXP20X and AXP22X PMICs' AC power supply
> +
> +Required Properties:
> + - compatible: One of:
> +			"x-powers,axp202-ac-power-supply"
> +			"x-powers,axp221-ac-power-supply"
> +
> +More Required Properties for AXP20X PMICs:
> + - io-channels: phandles to ACIN voltage and current ADC channels
> + - io-channel-names = "acin_v", "acin_i";
> +
> +This node is a subnode of the axp20x PMIC.
> +
> +The AXP20X can read the current current and voltage supplied by AC by
> +reading ADC channels from the AXP20X ADC.
> +
> +The AXP22X is only able to tell if an AC power supply is present and
> +usable.
> +
> +Example:
> +
> +&axp209 {
> +	ac_power_supply: ac_power_supply {

power-supply {

> +		compatible = "x-powers,axp202-ac-power-supply";
> +		io-channels = <&axp209_adc 0>, <&axp209_adc 1>;

Is this assignment fixed? If so, then it doesn't need to be in DT.

> +		io-channel-names = "acin_v", "acin_i";
> +	};
> +};
> -- 
> 2.9.3
>