From: Felipe Balbi <balbi@ti.com>
To: Nishanth Menon <nm@ti.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>,
rtc-linux@googlegroups.com, linux-omap@vger.kernel.org,
a.zummo@towertech.it, johan@kernel.org, tony@atomide.com,
bcousson@baylibre.com, balbi@ti.com, akpm@linux-foundation.org,
linux@roeck-us.net, nsekhar@ti.com, t-kristo@ti.com,
j-keerthy@ti.com, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH V3 3/3] rtc: omap: Support regulator supply for RTC
Date: Fri, 24 Oct 2014 10:43:12 -0500 [thread overview]
Message-ID: <20141024154312.GL26941@saruman> (raw)
In-Reply-To: <544A5393.6090504@ti.com>
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On Fri, Oct 24, 2014 at 08:26:43AM -0500, Nishanth Menon wrote:
> On 10/23/2014 11:53 PM, Lokesh Vutla wrote:
> > On some Soc's RTC is powered by an external power regulator.
> SoC ? -> could you rephrase this to indicate "certain SoCs such as
> DRA7, RTC is an independent voltage domain of it's own and on
> platforms such as DRA7-evm, this may be supplied by individual
> regulator on it's own.
>
> > e.g. RTC on DRA7 SoC. Make the OMAP RTC driver support a
> > power regulator.
>
> Question ofcourse is what voltage would you like that regulator to be
> at? As you are aware, certain LDOs and SMPS can drive varying voltage
> and just enable/disable would do just the default voltage of the
> SMPS/LDO, right? OR am i missing something here?
just pass the correct voltage through DTS as we do for all other
regulators ? It's only tricky when we have a range of acceptable
voltages but for RTC, IIRC, it's always a set voltage (1.0V or 1.8V).
--
balbi
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next prev parent reply other threads:[~2014-10-24 15:43 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-24 4:53 [PATCH V3 0/3] rtc: omap: Add support for regulator supply Lokesh Vutla
2014-10-24 4:53 ` [PATCH V3 1/3] rtc: omap: use module_platform_driver Lokesh Vutla
2014-10-24 7:33 ` Johan Hovold
2014-10-24 15:38 ` Felipe Balbi
2014-10-24 4:53 ` [PATCH V3 2/3] rtc: omap: Update Kconfig for OMAP RTC Lokesh Vutla
2014-10-24 4:53 ` [PATCH V3 3/3] rtc: omap: Support regulator supply for RTC Lokesh Vutla
2014-10-24 7:53 ` Johan Hovold
2014-10-24 7:57 ` Lokesh Vutla
2014-10-24 15:40 ` Felipe Balbi
2014-10-24 8:07 ` [PATCH V4 " Lokesh Vutla
2014-10-24 15:40 ` Felipe Balbi
2014-10-24 13:26 ` [PATCH V3 " Nishanth Menon
2014-10-24 15:43 ` Felipe Balbi [this message]
2014-10-24 15:47 ` Nishanth Menon
2014-10-28 9:49 ` Lokesh Vutla
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