linux-kernel - Re: [PATCH v4 3/6] Documentation: DT: Document twl4030-madc-battery bindings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAL_JsqL1hMmp-cj56xDKJtdnySgLyCMJtmKVaLLtn=ALKUE8=g@mail.gmail.com>
Date:	Wed, 1 Apr 2015 11:30:37 -0500
From:	Rob Herring <robherring2@...il.com>
To:	Marek Belisko <marek@...delico.com>
Cc:	Benoit Cousson <bcousson@...libre.com>,
	Tony Lindgren <tony@...mide.com>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-omap <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	hns@...delico.com
Subject: Re: [PATCH v4 3/6] Documentation: DT: Document twl4030-madc-battery bindings

On Tue, Mar 10, 2015 at 4:27 PM, Marek Belisko <marek@...delico.com> wrote:
> Signed-off-by: Marek Belisko <marek@...delico.com>
> ---
>  .../bindings/power_supply/twl4030_madc_battery.txt | 43 ++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power_supply/twl4030_madc_battery.txt
>
> diff --git a/Documentation/devicetree/bindings/power_supply/twl4030_madc_battery.txt b/Documentation/devicetree/bindings/power_supply/twl4030_madc_battery.txt
> new file mode 100644
> index 0000000..d3dd9d8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power_supply/twl4030_madc_battery.txt
> @@ -0,0 +1,43 @@
> +twl4030_madc_battery
> +
> +Required properties:
> + - compatible : "ti,twl4030-madc-battery"

Is this a sub-node of the twl4030 or something? Please define where
this fits (hint: I would expect to be a sub node of a charging
controller or battery monitor).

> + - capacity-uah : battery capacity in uAh
> + - ti,volt-to-capacity-charging-map : list of voltage(mV):level(%) values
> +       for charging calibration (see example)
> + - ti,volt-to-capacity-discharging-map : list of voltage(mV):level(%) values
> +       for discharging calibration (see example)

These seem like properties of the battery independent of the
battery/charging controller which is the twl4030. Ideally we would
define battery nodes generically and independent of the charge
controllers. Then there are smart batteries to consider too.

Rob

> + - io-channels: Should contain IIO channel specifiers
> +       for each element in io-channel-names.
> +- io-channel-names: Should contain the following values:
> + * "temp" - The ADC channel for temperature reading
> + * "ichg" - The ADC channel for battery charging status
> + * "vbat" - The ADC channel to measure the battery voltage
> +
> +Example:
> +       madc-battery {
> +               compatible = "ti,twl4030-madc-battery";
> +               capacity-uah = <1200000>;
> +               ti,volt-to-capacity-charging-map = <4200 100>,
> +                                               <4100 75>,
> +                                               <4000 55>,
> +                                               <3900 25>,
> +                                               <3800 5>,
> +                                               <3700 2>,
> +                                               <3600 1>,
> +                                               <3300 0>;
> +
> +               ti,volt-to-capacity-discharging-map = <4200 100>
> +                                                  <4100 95>,
> +                                                  <4000 70>,
> +                                                  <3800 50>,
> +                                                  <3700 10>,
> +                                                  <3600 5>,
> +                                                  <3300 0>;
> +               io-channels = <&twl_madc 1>,
> +                             <&twl_madc 10>,
> +                             <&twl_madc 12>;
> +               io-channel-names = "temp",
> +                                  "ichg",
> +                                  "vbat";
> +       };
> --
> 1.9.1
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/