From: Mark Brown <broonie@kernel.org>
To: Marco Felsch <m.felsch@pengutronix.de>
Cc: Doug Anderson <dianders@chromium.org>,
Chunyan Zhang <zhang.chunyan@linaro.org>,
Liam Girdwood <lgirdwood@gmail.com>,
ckeepax@opensource.cirrus.com,
LKML <linux-kernel@vger.kernel.org>,
Sascha Hauer <kernel@pengutronix.de>
Subject: Re: [PATCH 1/3] regulator: core: fix boot-on regulators use_count usage
Date: Tue, 8 Oct 2019 13:51:40 +0100 [thread overview]
Message-ID: <20191008125140.GK4382@sirena.co.uk> (raw)
In-Reply-To: <20191008060311.3ukim22vv7ywmlhs@pengutronix.de>
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On Tue, Oct 08, 2019 at 08:03:11AM +0200, Marco Felsch wrote:
> On 19-10-07 19:29, Mark Brown wrote:
> > On Mon, Oct 07, 2019 at 11:34:29AM +0200, Marco Felsch wrote:
> > > Sorry that won't fix my problem. If I drop the regulator-boot-on state
> > > the fixed-regulator will disable this regulator but disable/enable this
> > > regulator is only valid during suspend/resume. I don't say that my fix
> > > is correct but we should fix this.
> > I'm having a bit of trouble parsing this but it sounds like you want the
> > regulator to be always on in which case you should use the property
> > specifically for that.
> Sorry my english wasn't the best.. Imagine this case: The bootloader
> turned the display on to show an early bootlogo. Now if I miss the
> regulator-boot-on property the display is turned off and on. The turn
> off comes from the regulator probe, the turn on comes from the cosumer.
> Is that assumption correct?
No, we shouldn't do anything when the regulator probes - we'll only
disable unused regulators when we get to the end of boot (currently we
delay this by 30s to give userspace a chance to run, that's a hack but
we're fresh out of better ideas). During boot the regulator state will
only be changed if some consumer appears and changes the state.
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next prev parent reply other threads:[~2019-10-08 12:51 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 15:40 [PATCH 0/3] Regulator core fixes Marco Felsch
2019-09-17 15:40 ` [PATCH 1/3] regulator: core: fix boot-on regulators use_count usage Marco Felsch
2019-09-23 18:02 ` Doug Anderson
2019-09-23 18:14 ` Mark Brown
2019-09-23 18:36 ` Doug Anderson
2019-09-23 18:49 ` Mark Brown
2019-09-23 22:40 ` Doug Anderson
2019-09-24 18:27 ` Mark Brown
2019-09-26 19:44 ` Doug Anderson
2019-09-27 8:47 ` Marco Felsch
2019-10-01 19:57 ` Doug Anderson
2019-10-04 6:34 ` Matti Vaittinen
2019-10-04 11:32 ` Mark Brown
2019-10-04 12:03 ` Vaittinen, Matti
2019-10-04 15:01 ` Mark Brown
2019-10-07 9:34 ` Marco Felsch
2019-10-07 18:29 ` Mark Brown
2019-10-08 6:03 ` Marco Felsch
2019-10-08 12:51 ` Mark Brown [this message]
2019-10-08 14:56 ` Marco Felsch
2019-10-08 15:42 ` Mark Brown
2019-10-08 16:16 ` Marco Felsch
2019-10-08 16:23 ` Mark Brown
2019-10-08 20:16 ` Marco Felsch
2019-10-09 9:54 ` Mark Brown
2019-09-17 15:40 ` [PATCH 2/3] regulator: of: fix suspend-min/max-voltage parsing Marco Felsch
2019-09-17 16:02 ` Applied "regulator: of: fix suspend-min/max-voltage parsing" to the regulator tree Mark Brown
2019-09-17 15:40 ` [PATCH 3/3] regulator: core: make regulator_register() EPROBE_DEFER aware Marco Felsch
2019-09-17 16:02 ` Applied "regulator: core: make regulator_register() EPROBE_DEFER aware" to the regulator tree Mark Brown
2019-09-18 0:57 ` [PATCH 3/3] regulator: core: make regulator_register() EPROBE_DEFER aware Dmitry Torokhov
2019-09-18 8:18 ` Marco Felsch
2019-09-18 15:53 ` Dmitry Torokhov
2019-09-18 16:06 ` Marco Felsch
2019-09-18 16:08 ` Mark Brown
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