linux-kernel - Re: [PATCH 1/4] Documentation: tps65086: Add DT bindings for the TPS65086 PMIC

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Message-ID: <56250AF9.3030907@ti.com>
Date:	Mon, 19 Oct 2015 10:23:37 -0500
From:	"Andrew F. Davis" <afd@...com>
To:	Lee Jones <lee.jones@...aro.org>
CC:	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>,
	Mark Brown <broonie@...nel.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	<linux-gpio@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] Documentation: tps65086: Add DT bindings for the
 TPS65086 PMIC

On 10/19/2015 10:21 AM, Lee Jones wrote:
> On Mon, 19 Oct 2015, Andrew F. Davis wrote:
>
>> On 10/19/2015 04:13 AM, Lee Jones wrote:
>>> On Fri, 16 Oct 2015, Andrew F. Davis wrote:
>>>
>>>> The TPS65086 PMIC contains several regulators and a GPO controller.
>>>> Add bindings for the TPS65086 PMIC.
>>>>
>>>> Signed-off-by: Andrew F. Davis <afd@...com>
>>>> ---
>>>>   .../devicetree/bindings/gpio/gpio-tps65086.txt     | 17 ++++++++
>>>>   Documentation/devicetree/bindings/mfd/tps65086.txt | 46 ++++++++++++++++++++++
>>>>   .../bindings/regulator/tps65086-regulator.txt      | 36 +++++++++++++++++
>>>
>>> Please split these up into separate patches.
>>>
>>> There is no functional reason to bundle them up.
>>>
>>
>> ACK
>>
>>>>   3 files changed, 99 insertions(+)
>>>>   create mode 100644 Documentation/devicetree/bindings/gpio/gpio-tps65086.txt
>>>>   create mode 100644 Documentation/devicetree/bindings/mfd/tps65086.txt
>>>>   create mode 100644 Documentation/devicetree/bindings/regulator/tps65086-regulator.txt
>>>
>>> [...]
>>>
>>>> diff --git a/Documentation/devicetree/bindings/mfd/tps65086.txt b/Documentation/devicetree/bindings/mfd/tps65086.txt
>>>> new file mode 100644
>>>> index 0000000..4b6aeb4
>>>> --- /dev/null
>>>> +++ b/Documentation/devicetree/bindings/mfd/tps65086.txt
>>>> @@ -0,0 +1,46 @@
>>>> +* TPS65086 Power Management Integrated Circuit bindings
>>>> +
>>>> +Required properties:
>>>> + - compatible		: Should be "ti,tps65086".
>>>
>>> Any indication that it's a PMIC?
>>>
>>
>> In the compatible string?
>
> Ya.
>

Not sure what you mean then?, no one else seems to be doing that,
"xx,xxxxxxx-pmic" is usually used for matching the regulator node,
not the device itself.

>>>> + - reg			: Slave address.
>>>
>>> I2C/SPI?
>>>
>>
>> ACK
>>
>>>> + - interrupt-parent	: The parent interrupt controller.
>>>
>>> Phandled to ...
>>>
>>
>> ACK
>>
>>>> + - interrupts		: The interrupt line the device is connected to.
>>>> + - interrupt-controller	: Marks the device node as an interrupt controller.
>>>> + - #interrupt-cells	: The number of cells to describe an IRQ, this
>>>> +			  should be 2. The first cell is the IRQ number.
>>>> +			  The second cell is the flags, encoded as the trigger
>>>> +			  masks from ../interrupt-controller/interrupts.txt.
>>>
>>> Masks?  What masks?
>>>
>>> Best to make a link to the header where the flags are defined here.
>>>
>>
>> ACK
>>
>>>> +Additional nodes defined in:
>>>> + - Regulators	: ../regulator/tps65086-regulator.txt.
>>>> + - GPIO		: ../gpio/gpio-tps65086.txt.
>>>
>>> I'd suggest removing the full stops from all of the lines above.
>>>
>>> Just treat them as bullet points like we normally do.
>>>
>>
>> ACK
>>
>>>> +Example:
>>>> +
>>>> +	pmic: tps65086@5e {
>>>> +		compatible = "ti,tps65086";
>>>> +		reg = <0x5e>;
>>>> +		interrupt-parent = <&gpio1>;
>>>> +		interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
>>>> +		interrupt-controller;
>>>> +		#interrupt-cells = <2>;
>>>> +
>>>> +		regulators {
>>>> +			compatible = "ti,tps65086-regulator";
>>>> +
>>>> +			buck1 {
>>>> +				regulator-name = "vcc1";
>>>> +				regulator-min-microvolt = <1600000>;
>>>> +				regulator-max-microvolt = <1600000>;
>>>> +				regulator-boot-on;
>>>> +				ti,regulator-decay;
>>>> +				ti,regulator-step-size-25mv;
>>>> +			};
>>>> +		};
>>>> +
>>>> +		gpio4: tps65086_gpio {
>>>> +			compatible = "ti,tps65086-gpio";
>>>> +			gpio-controller;
>>>> +			#gpio-cells = <2>;
>>>> +		};
>>>> +	};
>>>
>>> [...]
>>>
>>
>

-- 
Andrew F. Davis
--
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