linux-kernel - Re: [RFCv2 1/3] docs: dts: Added documentation for Xilinx Zynq Reset Controller bindings.

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Message-ID: <CAAtXAHc=WTg3VHugKZ+SHnCA7OKXLLay-aOJyk9C9r+Z2MWwBg@mail.gmail.com>
Date:	Tue, 28 Jul 2015 06:57:17 -0700
From:	Moritz Fischer <moritz.fischer@...us.com>
To:	Michal Simek <michal.simek@...inx.com>
Cc:	Philipp Zabel <p.zabel@...gutronix.de>, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, Kumar Gala <galak@...eaurora.org>,
	Sören Brinkmann <soren.brinkmann@...inx.com>,
	linux@....linux.org.uk, devicetree@...r.kernel.org,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFCv2 1/3] docs: dts: Added documentation for Xilinx Zynq Reset
 Controller bindings.

Philip, Michal,

thanks for your reviews.

On Tue, Jul 28, 2015 at 1:25 AM, Michal Simek <michal.simek@...inx.com> wrote:
> On 07/28/2015 10:05 AM, Philipp Zabel wrote:
>> Am Freitag, den 24.07.2015, 17:21 -0700 schrieb Moritz Fischer:
>>> Signed-off-by: Moritz Fischer <moritz.fischer@...us.com>
>>> ---
>>>  Documentation/devicetree/bindings/reset/zynq-reset-pl.txt | 13 +++++++++++++
>>>  1 file changed, 13 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/reset/zynq-reset-pl.txt
>>>
>>> diff --git a/Documentation/devicetree/bindings/reset/zynq-reset-pl.txt b/Documentation/devicetree/bindings/reset/zynq-reset-pl.txt
>>> new file mode 100644
>>> index 0000000..ac4499e
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/reset/zynq-reset-pl.txt
>>> @@ -0,0 +1,13 @@
>>> +Xilinx Zynq PL Reset Manager
>>> +
>>> +Required properties:
>>> +- compatible: "xlnx,zynq-reset-pl"
>>> +- syscon <&slcr>;
>>> +- #reset-cells: 1
>>> +
>>> +Example:
>>> +    rstc: rstc@240 {
>>> +            #reset-cells = <1>;
>>> +            compatible = "xlnx,zynq-reset-pl";
>>> +            syscon = <&slcr>;
>>
>> Why the syscon phandle if rstc always is the child of slcr? Why not just
>> request the syscon for the rstc's parent node.
>
> We are using this description for pincntrl which was properly reviewed
> that's why I expect Moritz just use the same style.
> But yes also referencing parent should work.

Michal is right, I tried to be consistent with the pinctrl. Either one
is fine for me.
We'll just have to make a decision :-)
>
> TBH I don't have strong preference but having unified style is something
> what I would prefer.
>
> Also I see that using parent is used by others and it looks like that
> having something like syscon_regmap_lookup_parent will be worth to have.
>
> Thanks,
> Michal
>
>
Moritz
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