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From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2 2/2] ARM: dts: DRA7: Add node for RTC
Date: Wed, 9 Jul 2014 04:00:51 -0700	[thread overview]
Message-ID: <20140709110051.GQ28884@atomide.com> (raw)
In-Reply-To: <53BD1FC3.6050500@ti.com>

* Keerthy <a0393675@ti.com> [140709 03:59]:
> On Wednesday 09 July 2014 04:20 PM, Tony Lindgren wrote:
> >* Keerthy <a0393675@ti.com> [140709 03:39]:
> >>On Wednesday 09 July 2014 03:39 PM, Tony Lindgren wrote:
> >>>* Keerthy <a0393675@ti.com> [140709 02:36]:
> >>>>On Wednesday 09 July 2014 02:42 PM, Tony Lindgren wrote:
> >>>>>* Lokesh Vutla <lokeshvutla@ti.com> [140709 01:37]:
> >>>>>>--- a/arch/arm/boot/dts/dra7-evm.dts
> >>>>>>+++ b/arch/arm/boot/dts/dra7-evm.dts
> >>>>>>@@ -249,6 +249,7 @@
> >>>>>>  					regulator-min-microvolt = <1050000>;
> >>>>>>  					regulator-max-microvolt = <1050000>;
> >>>>>>  					regulator-boot-on;
> >>>>>>+					regulator-always-on;
> >>>>>>  				};
> >>>>>Is this regulator really always on?
> >>>>This feeds on to RTC which is a free running clock. So i guess always on is
> >>>>justified no?
> >>>Well the dts entries should describe the hardware. If the
> >>>regulator can be enabled and disabled, we should not claim it's
> >>>always on.
> >> From the PMIC perspective every regulator can be enabled and
> >>disabled. From a Board perspective there are some which need
> >>to be always on. For Ex: SMPS123 which feeds on to the MPU.
> >Right, and we already have regulator-boot-on for those. Or are
> >you seeing some issue with that?
> regulator-boot-on describes that at boot a particular regulator is on.
> It does not guarantee that it will be on for the rest of the time. The
> regulator framework can go ahead and disable it if no one has requested
> for it. In case of RTC we do not want that to happen.

That's a bug in the RTC driver then. The driver should request a
regulator if it's specified.

Regards,

Tony

  reply	other threads:[~2014-07-09 11:00 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-09 12:37 [PATCH] ARM: DRA7: hwmod: add entry for RTCSS Sekhar Nori
2014-06-13 19:09 ` Paul Walmsley
2014-06-15  3:47   ` Paul Walmsley
2014-07-03 10:22 ` Rajendra Nayak
2014-07-06  0:32   ` Paul Walmsley
2014-07-09  8:35     ` [PATCH V2 0/2] ARM: DRA7: Add RTC hwmod and dt entries Lokesh Vutla
2014-07-09  8:35       ` [PATCH V2 1/2] ARM: DRA7: hwmod: Add data for RTC Lokesh Vutla
2014-07-22 10:19         ` Lokesh Vutla
2014-07-22 19:19           ` Paul Walmsley
2014-07-09  8:35       ` [PATCH V2 2/2] ARM: dts: DRA7: Add node " Lokesh Vutla
2014-07-09  9:12         ` Tony Lindgren
2014-07-09  9:32           ` Keerthy
2014-07-09 10:09             ` Tony Lindgren
2014-07-09 10:35               ` Keerthy
2014-07-09 10:50                 ` Tony Lindgren
2014-07-09 10:56                   ` Keerthy
2014-07-09 11:00                     ` Tony Lindgren [this message]
2014-07-09 11:06                       ` Keerthy
2014-07-14 14:45                         ` Lokesh Vutla
2014-07-14 16:23                           ` Tony Lindgren
2014-07-15  3:57                             ` Keerthy
2014-07-15  4:07                             ` Lokesh Vutla
2014-07-15  6:59                               ` Tony Lindgren
2014-07-15  3:51                           ` Keerthy

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