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From: Stanimir Varbanov <svarbanov@mm-sol.com>
To: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org, Rob Herring <rob.herring@calxeda.com>,
	Kumar Gala <galak@codeaurora.org>,
	Grant Likely <grant.likely@linaro.org>,
	Courtney Cavin <courtney.cavin@sonymobile.com>,
	Lee Jones <lee.jones@linaro.org>,
	Josh Cartwright <joshc@codeaurora.org>
Subject: Re: [RFC PATCH v2 3/5] rtc: add qpnp rtc driver
Date: Thu, 10 Jul 2014 10:38:30 +0300	[thread overview]
Message-ID: <53BE42F6.2090004@mm-sol.com> (raw)
In-Reply-To: <53BD84E1.4030602@codeaurora.org>

Hi Stephen,

On 07/09/2014 09:07 PM, Stephen Boyd wrote:
> On 07/03/14 06:14, Stanimir Varbanov wrote:
>> A 32bits RTC is housed inside PMIC. The RTC driver uses QPNP
>> SPMI interface to communicate with the PMIC RTC module.
>>
>> The RTC device is divided into two sub-peripherals:
>>  - RTC read-write peripheral having basic RTC registers
>>  - alarm peripheral for controlling alarm
>>
>> These two RTC peripherals are childrens of QPNP SPMI bus. They
>> use regmap to read/write to its registers into PMIC.
>>
> 
> What happened to using Josh's patch for rtc-pm8xxx.c[1]? That seems
> easier than adding an entire new driver for almost the same hardware.
> 

Ups, I completely forgot about Josh's patch, thanks for the reminder.
Nevermind, the intention of the patch set was to get agreement on the
approach of the qpnp-spmi driver. The rtc is just slightly reworked to
platform driver downstream rtc driver. And last but not least I've used
rtc to test the approach and as a example of PMIC function/peripheral
driver.

I will see what efforts are needed to reuse rtc-pm8xxx.

> [1]
> http://lists.infradead.org/pipermail/linux-arm-kernel/2013-October/207665.html
> 

-- 
regards,
Stan

  reply	other threads:[~2014-07-10  7:38 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-03 13:13 [RFC PATCH v2 0/5] Support for Qualcomm QPNP PMIC's Stanimir Varbanov
2014-07-03 13:13 ` [RFC PATCH v2 1/5] mfd: qpnp: add support for Qualcomm QPNP PMICs Stanimir Varbanov
     [not found]   ` <1404393243-7324-2-git-send-email-svarbanov-NEYub+7Iv8PQT0dZR+AlfA@public.gmane.org>
2014-07-09 14:34     ` Lee Jones
2014-07-09 15:24       ` Stanimir Varbanov
2014-07-10  8:36         ` Lee Jones
2014-07-10 15:31           ` Stanimir Varbanov
2014-07-11  9:07             ` Lee Jones
2014-07-14 13:43               ` Stanimir Varbanov
2014-07-14 14:03                 ` Lee Jones
2014-07-15  9:27                   ` Stanimir Varbanov
     [not found] ` <1404393243-7324-1-git-send-email-svarbanov-NEYub+7Iv8PQT0dZR+AlfA@public.gmane.org>
2014-07-03 13:14   ` [RFC PATCH v2 2/5] dt: qcom: msm8974: add qpnp-spmi device nodes Stanimir Varbanov
     [not found]     ` <1404393243-7324-3-git-send-email-svarbanov-NEYub+7Iv8PQT0dZR+AlfA@public.gmane.org>
2014-07-09 14:10       ` Lee Jones
2014-07-09 15:28         ` Stanimir Varbanov
2014-07-03 13:14 ` [RFC PATCH v2 3/5] rtc: add qpnp rtc driver Stanimir Varbanov
2014-07-09 18:07   ` Stephen Boyd
2014-07-10  7:38     ` Stanimir Varbanov [this message]
2014-07-10 13:08   ` Bjorn Andersson
2014-07-10 15:43     ` Stanimir Varbanov
2014-07-15  9:51       ` Stanimir Varbanov
2014-07-03 13:14 ` [RFC PATCH v2 4/5] dt: msm8974: add qpnp rtc device node Stanimir Varbanov
2014-07-03 13:14 ` [RFC PATCH v2 5/5] dt: rtc: add binding document for qpnp rtc Stanimir Varbanov

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