linux-kernel - Re: [PATCH v2] dt-bindings: power: New bindings for ltc3651-charger

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Message-ID: <20170515131754.pbnvgiqa2awkgnyp@earth>
Date:   Mon, 15 May 2017 15:17:54 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.co.uk>
To:     Mike Looijmans <mike.looijmans@...ic.nl>
Cc:     devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, mark.rutland@....com
Subject: Re: [PATCH v2] dt-bindings: power: New bindings for ltc3651-charger

Hi Mike,

On Tue, May 09, 2017 at 07:36:30AM +0200, Mike Looijmans wrote:
> This adds the devicetree bindings documentation for the LTC3651 battery charger.
> 
> Signed-off-by: Mike Looijmans <mike.looijmans@...ic.nl>

Thanks, queued.

-- Sebastian

> ---
> v2: Add "lltc," vendor prefix to gpios
>     Expand irq paragraph
> 
>  .../bindings/power/supply/ltc3651-charger.txt      | 27 ++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
> 
> diff --git a/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
> new file mode 100644
> index 0000000..71f2840
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt
> @@ -0,0 +1,27 @@
> +ltc3651-charger
> +
> +Required properties:
> + - compatible: "lltc,ltc3651-charger"
> + - lltc,acpr-gpios: Connect to ACPR output. See remark below.
> +
> +Optional properties:
> + - lltc,fault-gpios: Connect to FAULT output. See remark below.
> + - lltc,chrg-gpios: Connect to CHRG output. See remark below.
> +
> +The ltc3651 outputs are open-drain type and active low. The driver assumes the
> +GPIO reports "active" when the output is asserted, so if the pins have been
> +connected directly, the GPIO flags should be set to active low also.
> +
> +The driver will attempt to aquire interrupts for all GPIOs to detect changes in
> +line state. If the system is not capabale of providing interrupts, the driver
> +cannot report changes and userspace will need to periodically read the sysfs
> +attributes to detect changes.
> +
> +Example:
> +
> +	charger: battery-charger {
> +		compatible = "lltc,ltc3651-charger";
> +		lltc,acpr-gpios = <&gpio0 68 GPIO_ACTIVE_LOW>;
> +		lltc,fault-gpios = <&gpio0 64 GPIO_ACTIVE_LOW>;
> +		lltc,chrg-gpios = <&gpio0 63 GPIO_ACTIVE_LOW>;
> +	};
> -- 
> 1.9.1
> 

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