From: Mark Brown <broonie@kernel.org>
To: "Vaittinen, Matti" <Matti.Vaittinen@fi.rohmeurope.com>
Cc: "corbet@lwn.net" <corbet@lwn.net>, "pavel@ucw.cz" <pavel@ucw.cz>,
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Subject: Re: [PATCH v5 01/16] dt-bindings: regulator: Document ROHM BD71282 regulator bindings
Date: Tue, 19 Nov 2019 19:36:36 +0000 [thread overview]
Message-ID: <20191119193636.GH3634@sirena.org.uk> (raw)
In-Reply-To: <fa69d01504817e3260d2b023ae2637aa2f1b2862.camel@fi.rohmeurope.com>
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On Tue, Nov 19, 2019 at 06:51:37PM +0000, Vaittinen, Matti wrote:
> On Tue, 2019-11-19 at 18:13 +0000, Mark Brown wrote:
> > Ah, OK. I didn't even notice that patch when I scanned the series.
> > I'll look out for this next time around but that sounds like it's
> > generally going in the right direction, especially if it's integrated
> > with the suspend mode regulator bindings that Chunyan did.
> Probably it is not as I am not familiar with Chunyan's work. I'll try
> looking what has been done on that front :) And I am pretty sure you
> might not be happy with that patch - but perhaps you can give me a
> nudge to better direction...
The driver interface was added in "regulator: add PM suspend and resume
hooks".
> > Yes, I think this needs clarification as I completely failed to pick
> > up
> > on this and did indeed read this as referring to the
> > modes. "Voltages
> > that can be set in RUN mode" or something? I take it these voltages
> > are
> > fixed and the OS can't change them?
> Unfortunately they are not. Voltages and enable/disable statuses for
> each run-level (and individually for each run-level capable buck) can
> be changed at runtime via I2C. And a customer requested me also to
> support this - hence the in-kernel API - but I am sure you have some
> nice words when you check the patch 12. :]
Ah, that's actually better. It opens up possiblities for making use of
the feature without encoding voltages in DT. For example, you can cache
the last however many voltages that were set and jump quickly to them or
do something like put the top of the constraints in to help with
governors like ondemand. I'd recommend trying for something like that
rather than encoding in DT, it'll probably be more robust with things
like cpufreq changing.
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next prev parent reply other threads:[~2019-11-19 19:36 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-18 6:53 [PATCH v5 00/16] Support ROHM BD71828 PMIC Matti Vaittinen
2019-11-18 6:53 ` [PATCH v5 01/16] dt-bindings: regulator: Document ROHM BD71282 regulator bindings Matti Vaittinen
2019-11-18 16:25 ` Mark Brown
2019-11-18 18:03 ` Vaittinen, Matti
2019-11-19 18:13 ` Mark Brown
2019-11-19 18:51 ` Vaittinen, Matti
2019-11-19 19:36 ` Mark Brown [this message]
2019-11-29 7:48 ` Vaittinen, Matti
2019-11-29 12:09 ` Mark Brown
2019-12-02 7:57 ` Vaittinen, Matti
2019-12-02 13:11 ` Mark Brown
2019-12-02 14:02 ` Vaittinen, Matti
2019-12-04 12:47 ` Mark Brown
2019-12-04 13:13 ` Vaittinen, Matti
2019-12-04 14:14 ` Mark Brown
2019-12-10 10:39 ` Vaittinen, Matti
2019-12-10 11:14 ` Vaittinen, Matti
2019-12-10 12:11 ` Mark Brown
2019-12-10 12:41 ` Vaittinen, Matti
2019-12-10 12:45 ` Mark Brown
2019-12-10 13:07 ` Vaittinen, Matti
2019-11-22 22:48 ` Rob Herring
2019-11-18 6:54 ` [PATCH v5 02/16] dt-bindings: leds: ROHM BD71282 PMIC LED driver Matti Vaittinen
2019-11-22 23:00 ` Rob Herring
2019-11-18 6:54 ` [PATCH v5 03/16] dt-bindings: mfd: Document ROHM BD71828 bindings Matti Vaittinen
2019-11-22 23:05 ` Rob Herring
2019-11-18 6:55 ` [PATCH v5 04/16] mfd: rohm PMICs - use platform_device_id to match MFD sub-devices Matti Vaittinen
2019-11-18 6:55 ` [PATCH v5 05/16] mfd: bd71828: Support ROHM BD71828 PMIC - core Matti Vaittinen
2019-11-18 6:56 ` [PATCH v5 06/16] mfd: input: bd71828: Add power-key support Matti Vaittinen
2019-11-18 6:56 ` [PATCH v5 07/16] clk: bd718x7: Support ROHM BD71828 clk block Matti Vaittinen
2019-11-18 6:57 ` [PATCH v5 08/16] regulator: bd718x7: Split driver to common and bd718x7 specific parts Matti Vaittinen
2019-11-18 6:57 ` [PATCH v5 09/16] regulator: bd71828: Basic support for ROHM bd71828 PMIC regulators Matti Vaittinen
2019-11-18 16:20 ` Mark Brown
2019-11-19 9:12 ` Vaittinen, Matti
2019-11-18 6:58 ` [PATCH v5 10/16] gpio: devres: Add devm_gpiod_get_parent_array Matti Vaittinen
2019-11-19 14:43 ` Linus Walleij
2019-11-19 17:54 ` Vaittinen, Matti
2019-11-21 14:13 ` Linus Walleij
2019-11-18 6:59 ` [PATCH v5 11/16] docs: driver-model: Add missing managed GPIO array get functions Matti Vaittinen
2019-11-18 6:59 ` [PATCH v5 12/16] regulator: bd71828: Add GPIO based run-level control for regulators Matti Vaittinen
2019-11-18 7:00 ` [PATCH v5 13/16] rtc: bd70528 add BD71828 support Matti Vaittinen
2019-12-10 13:24 ` Alexandre Belloni
2019-11-18 7:01 ` [PATCH v5 14/16] gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs Matti Vaittinen
2019-11-18 9:22 ` Bartosz Golaszewski
2019-11-18 7:03 ` [PATCH v5 15/16] leds: Add common LED binding parsing support to LED class/core Matti Vaittinen
2019-11-18 21:55 ` Jacek Anaszewski
2019-11-19 7:21 ` Vaittinen, Matti
2019-11-19 19:30 ` Jacek Anaszewski
2019-11-20 7:31 ` Vaittinen, Matti
2019-11-19 14:23 ` Vaittinen, Matti
2019-11-18 7:03 ` [PATCH v5 16/16] led: bd71828: Support LED outputs on ROHM BD71828 PMIC Matti Vaittinen
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