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From: Mark Brown <broonie@kernel.org>
To: "Vaittinen, Matti" <Matti.Vaittinen@fi.rohmeurope.com>
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Subject: Re: [PATCH v5 01/16] dt-bindings: regulator: Document ROHM BD71282 regulator bindings
Date: Tue, 19 Nov 2019 18:13:25 +0000
Message-ID: <20191119181325.GD3634@sirena.org.uk> (raw)
In-Reply-To: <fd1e4e652840346bd990c769eabe2f966bda4ed6.camel@fi.rohmeurope.com>

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On Mon, Nov 18, 2019 at 06:03:42PM +0000, Vaittinen, Matti wrote:

> It's nice to hear from you again :) I hope you're enjoying all the new
> things :)

:)

> On Mon, 2019-11-18 at 16:25 +0000, Mark Brown wrote:
> > On Mon, Nov 18, 2019 at 08:53:57AM +0200, Matti Vaittinen wrote:

> > I don't think I saw this having the effect on set_voltage() that I'd
> > have expected in the driver?  

> The support for this is added in patch 12. I should've ordered the
> patch series so that all regulator patches were one after another.
> Sorry for that.
> The patch 12 adds the run-level support. Please see the functions
> get_runcontrolled_bucks_dt(),
> mark_regulator_runlvl_controlled() (sets the g->runlvl)
> and set_buck_runlvl_controlled() (called based on g->runlvl)
> which changes the ops to disallow setters and to get voltage based on
> current runlevel - and different ops depending on if runlevels are
> controlled by GPIO or I2C. Additionally set_buck_runlvl_controlled()
> adds DT parsing call-back for setting the initial voltages.

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.

> > > +        minimum: 0
> > > +        maximum: 2000000
> > > +        maxItems: 4
> > > +        description:
> > > +          Array of voltages for run-levels. First value is for
> > > run-level 0,
> > > +          second for run-level 1 etc. Microvolts.

> > What's the mapping from array indexes to the names used elsewhere to
> > support runlevels?

> Hmm. Sorry Mark, I don't think I follow your question. Do you mean
> names like LPSR, SUSPEND, IDLE, RUN? If so, then I might need to
> rephrase this. The runlevels referred here are different from LPSR,
> SUSPEND, IDLE etc. They are actually 'sub-levels' for PMIC's RUN state.
> Eg, kind of a 'fast way' to change voltages for multiple power rails
> when SoC is at RUN state. The names I have seen are RUN0, RUN1, RUN2
> and RUN3. That mapping is described in description above.

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?

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  reply index

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 [this message]
2019-11-19 18:51         ` Vaittinen, Matti
2019-11-19 19:36           ` Mark Brown
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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