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Date: Fri, 23 Jan 2015 16:40:35 +0900
From: Beomho Seo <beomho.seo@...sung.com>
To: Chanwoo Choi <cw00.choi@...sung.com>,
Jaewon Kim <jaewon02.kim@...sung.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-pm@...r.kernel.org, Inki Dae <inki.dae@...sung.com>,
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>,
Lee Jones <lee.jones@...aro.org>,
Sebastian Reichel <sre@...nel.org>,
Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH 6/6] Documentation: Add device tree bindings document for
max77843
On 01/23/2015 03:25 PM, Chanwoo Choi wrote:
> Hi Jaewon,
>
> On 01/23/2015 02:02 PM, Jaewon Kim wrote:
>> Add document describing device tree bindings for max77843 MFD.
>> Drivers: MFD core, regulator, extcon, charger and fuelgauge.
>>
>> Cc: Rob Herring <robh+dt@...nel.org>
>> Cc: Pawel Moll <pawel.moll@....com>
>> Cc: Mark Rutland <mark.rutland@....com>
>> Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
>> Cc: Kumar Gala <galak@...eaurora.org>
>> Cc: Lee Jones <lee.jones@...aro.org>
>> Cc: Chanwoo Choi <cw00.choi@...sung.com>
>> Cc: Sebastian Reichel <sre@...nel.org>
>> Cc: Mark Brown <broonie@...nel.org>
>> Signed-off-by: Beomho Seo <beomho.seo@...sung.com>
>> Signed-off-by: Jaewon Kim <jaewon02.kim@...sung.com>
>> ---
>> Documentation/devicetree/bindings/mfd/max77843.txt | 87 ++++++++++++++++++++
>> 1 file changed, 87 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/mfd/max77843.txt
>>
>> diff --git a/Documentation/devicetree/bindings/mfd/max77843.txt b/Documentation/devicetree/bindings/mfd/max77843.txt
>> new file mode 100644
>> index 0000000..6895604
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mfd/max77843.txt
>> @@ -0,0 +1,87 @@
>> +Maxim MAX77843 multi-function device
>> +
>> +MAX77843 is a Multi-Function Device with the following submodules:
>> +- PMIC : 2 SAFEOUT LDOs for USB device
>> +- CHARGER : Li+ battery charger with Fuel Gauge
>> +- MUIC : Micro USB Interface Circuit
>> +- HAPTIC : motor control driver for haptics
>
> HAPTIC ?
>
>> +- LED : 4 channel RGBW LED
>
> LED ?
>
> This patchset don't include andy haptic/led drivers.
> I think it is un-necessary information.
>
> When you implement the haptic/led driver, you will add the information
> for haptic/led driver.
>
OK. I will remove them.
>> +
>> +It is interfaced to host controller using I2C.
>> +
>> +Required properties:
>> +- compatible : Must be "maxim,max77843".
>> +- reg : I2C slave address of PMIC block.
>> +- interrupts : I2C line for main SoCs.
>> +- interrupt-parent : The parent of interrupt controller.
>> +
>> +Optional properties:
>> +- regulators : The regulators of max77843 have to be instantiated under subnode
>> + named "regulators" using the following format.
>> +
>> + [*]refer : Documentation/devicetree/bindings/regulator/regulator.txt
>> +
>> + regulators {
>> + SAFEOUT {
>> + regulator-name = "SAFEOUT";
>> + };
>> + }
>> +
>> + List of valid regulator names:
>> + - SAFEOUT1, SAFEOUT2, CHARGER.
>> +
>> +- max77843-muic : This properties used by extcon consumers.
>> + Required properties:
>> + - compatible : Must be "maxim,max77842-muic".
>> +
>> +- max77843-charger : There battery charger of MAX77843 have to be instantiated
>> + under sub-node named "max77843-charger" using the following format.
>> + Required properties:
>> + - compatible : Must be "maxim,max77842-charger".
>> + - maxim,fast-charge-uamp : Fast charge current levels are
>> + 100 mA to 3150 mA programmed by I2C per 100 mA.
>> + - maxim,top-off-uamp : Top off current threshold levels are
>> + 125 mA to 650 mA programmed by I2C per 75 mA.
>> + - maxim,input-uamp-limit : Input current limit levels are
>> + 100 mA to 3533 mA programmed by I2C per 33 mA.
>> +- max77843-fuelgauge : There fuelgauge of MAX77843 have to be instantiated
>> + under sub-node named "max77843-fuelgauge" using the following format.
>> + Required properties:
>> + - compatible : Must be "maxim,max77842-fuelgauge".
>> +
>> +Example:
>> + max77843@66 {
>> + compatible = "samsung,max77843";
>> + reg = <0x66>;
>> + interrupt-parent = <&gpa1>;
>> + interrupts = <5 2>;
>> +
>> + regulators {
>> + SAFEOUT1 {
>> + regulator-name = "SAFEOUT1";
>> + regulator-min-microvolt = <3300000>;
>> + regulator-max-microvolt = <4950000>;
>> + };
>> + SAFEOUT2 {
>> + regulator-name = "SAFEOUT2";
>> + regulator-min-microvolt = <3300000>;
>> + regulator-max-microvolt = <4950000>;
>> + };
>
> As I knew, max77843 regulator driver supprot 'CHARGER' regulator.
> I think you have to add the 'CHARGER' dt node for regulators.
>
>
Right, I will include charger regulator.
>> + };
>> +
>> + max77843-muic {
>> + compatible = "maxim,max77843-muic";
>> + };
>> +
>> + max77843-charger {
>> + compatible = "maxim,max77843-charger";
>> + maxim,fast-charge-uamp = <450000>;
>> + maxim,top-off-uamp = <125000>;
>> + maxim,input-uamp-limit = <500000>;
>> + };
>> +
>> + max77843-fuelgauge {
>> + compatible = "maxim,max77843-fuelgauge";
>> + };
>> +
>> + };
>>
>
> Thanks,
> Chanwoo Choi
> --
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