From: l.stach@pengutronix.de (Lucas Stach)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 6/6] regulator: anatop: set default voltage selector for pcie
Date: Wed, 12 Apr 2017 18:11:54 +0200 [thread overview]
Message-ID: <1492013514.15082.35.camel@pengutronix.de> (raw)
In-Reply-To: <20170413074103.GC23163@b29396-OptiPlex-7040>
Am Donnerstag, den 13.04.2017, 15:41 +0800 schrieb Dong Aisheng:
> On Tue, Apr 11, 2017 at 09:40:03PM +0100, Mark Brown wrote:
> > On Wed, Apr 12, 2017 at 09:58:47AM +0800, Dong Aisheng wrote:
> > > Set the initial voltage selector for vddpcie in case it's disabled
> > > by default.
> >
> > Why is this the only anatop regulator which can have this problem and
> > how do we know this is a good value?
>
> Anatop regulator has no separate gate bit.
> e.g.
> 00000 Power gated off
> 00001 Target core voltage = 0.725V
> ...
> So it may have no valid default voltage in case it's disabled in
> bootloader.
> e.g. regulator_enable() may not work.
>
> The default voltage 1.100v this patch sets is defined in reference
> manual.
Huh? Shouldn't regulator_enable bring the voltage in a range defined by
the constraints in the DT?
Regards,
Lucas
next prev parent reply other threads:[~2017-04-12 16:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-12 1:58 [PATCH 1/6] regulator: anatop: check return value of of_get_regulator_init_data Dong Aisheng
2017-04-11 20:42 ` Applied "regulator: anatop: check return value of of_get_regulator_init_data" to the regulator tree Mark Brown
2017-04-12 1:58 ` [PATCH 2/6] regulator: anatop: only set supply regulator when it actually exists Dong Aisheng
2017-04-11 20:31 ` Mark Brown
2017-04-13 7:11 ` Dong Aisheng
2017-04-12 15:53 ` Mark Brown
2017-04-12 16:00 ` Dong Aisheng
2017-04-12 16:06 ` Mark Brown
2017-04-12 1:58 ` [PATCH 3/6] regulator: anatop: use of_property_read_string to read the name Dong Aisheng
2017-04-11 20:42 ` Applied "regulator: anatop: use of_property_read_string to read the name" to the regulator tree Mark Brown
2017-04-12 1:58 ` [PATCH 4/6] regulator: anatop: remove unneeded name field of struct anatop_regulator Dong Aisheng
2017-04-11 20:42 ` Applied "regulator: anatop: remove unneeded name field of struct anatop_regulator" to the regulator tree Mark Brown
2017-04-12 1:58 ` [PATCH 5/6] regulator: anatop-regulator: make regulator-name using optionally Dong Aisheng
2017-04-11 20:38 ` Mark Brown
2017-04-13 7:31 ` Dong Aisheng
2017-04-12 1:58 ` [PATCH 6/6] regulator: anatop: set default voltage selector for pcie Dong Aisheng
2017-04-11 20:40 ` Mark Brown
2017-04-13 7:41 ` Dong Aisheng
2017-04-12 15:49 ` Mark Brown
2017-04-12 16:11 ` Dong Aisheng
2017-04-12 16:11 ` Lucas Stach [this message]
2017-04-12 16:16 ` Mark Brown
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