linux-kernel - Re: [PATCH 1/3] dt-bindings: mfd: axp20x: Document backup battery charging property

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Message-ID: <20180102154803.esn3ybxut5iy4bnu@dell>
Date:   Tue, 2 Jan 2018 15:48:03 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Paul Kocialkowski <contact@...lk.fr>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...glegroups.com,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Chen-Yu Tsai <wens@...e.org>,
        Russell King <linux@...linux.org.uk>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH 1/3] dt-bindings: mfd: axp20x: Document backup battery
 charging property

On Sat, 30 Dec 2017, Paul Kocialkowski wrote:

> This adds documentation for the "backup" property of the axp20x driver,
> that controls the charging mechanism for the backup battery on axp20x.
> 
> Signed-off-by: Paul Kocialkowski <contact@...lk.fr>
> 
> diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt
> index 9455503b0299..382776b29932 100644
> --- a/Documentation/devicetree/bindings/mfd/axp20x.txt
> +++ b/Documentation/devicetree/bindings/mfd/axp20x.txt
> @@ -58,6 +58,11 @@ Optional properties:
>  	      See Documentation/devicetree/bindings/regulator/regulator.txt
>  	      for more information on standard regulator bindings.
>  
> +- backup: An array of two integers for backup battery charging (axp20x-only),
> +	  describing the charging voltage in mV first and the charging current
> +	  in uA second. Backup battery charging is only enabled when these two
> +	  fields are filled.
> +
>  Optional properties for DCDC regulators:
>  - x-powers,dcdc-workmode: 1 for PWM mode, 0 for AUTO (PWM/PFM) mode
>  			  Default: Current hardware setting
> @@ -256,4 +261,6 @@ axp209: pmic@34 {
>  			/* unused but preferred to be managed by OS */
>  		};
>  	};
> +
> +	backup = <3000 200>;

It's unlikely that this will become a generic property, so you should
prefix it with your vendor ID.

>  };

-- 
Lee Jones
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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