linux-kernel - Re: [PATCH 6/6] documentation: bindings: document PMIC8921/8058 RTC

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Date:	Wed, 05 Mar 2014 17:31:27 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Josh Cartwright <joshc@...eaurora.org>
CC:	Alessandro Zummo <a.zummo@...ertech.it>,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.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>,
	Rob Landley <rob@...dley.net>, devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH 6/6] documentation: bindings: document PMIC8921/8058 RTC

On 03/05/14 16:00, Josh Cartwright wrote:
> On Wed, Mar 05, 2014 at 12:58:55PM -0800, Stephen Boyd wrote:
>> On 03/05/14 11:29, Josh Cartwright wrote:
>>> diff --git a/Documentation/devicetree/bindings/rtc/qcom,pm8xxx-rtc.txt b/Documentation/devicetree/bindings/rtc/qcom,pm8xxx-rtc.txt
>>> new file mode 100644
>>> index 0000000..699bd30
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/rtc/qcom,pm8xxx-rtc.txt
>>> @@ -0,0 +1,29 @@
>>> +* Real-Time Clock for Qualcomm 8058/8921 PMICs
>>> +
>>> +Required properties:
>>> +- compatible: should be one of the following.
>>> +    * "qcom,pm8058-rtc"
>>> +    * "qcom,pm8921-rtc"
>>> +- reg: base address of the register region
>>> +- reg-names: corresponding reg names for the regions listed in the 'reg'
>>> +             property, must contain:
>>> +     "rtc_base" - base of the RTC register region
>> optional reg-names?
>>
>>> +- interrupts: interrupt list for the RTC, must contain a single interrupt
>>> +              specifier for the alarm interrupt
>>> +- interrupt-names: corresponding interrupt names for the interrupts listed in
>>> +                   the 'interrupts' property, must contain:
>>> +     "alarm" - summary interrupt for PMIC peripherals
>> optional interrupt-names?
> It isn't clear to me why these should be made optional, I hope Rob
> provides some clarification in the sdhci-msm thread.

Looks like the driver isn't using either of these properties, so I'm not
sure why they're needed. Maybe they should just be removed.

>
>
>>> +- linux,allow-set-time: indicates that the setting of RTC time is allowed by
>>> +                        the host CPU
>> Is this a "linux" property? It seems like something that other OSes
>> would want to know about and doesn't require any explicit knowledge
>> about operating  system things (like keymaps for example).
> Yeah, I wasn't quite sure how to name this property.  It's
> Linux-specific in the sense that the underlying operation method is
> "set_time", but I agree this should be named something else...
>
> How do you feel about simply "allow-set-time"?

Sounds ok to me.

-- 
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