From: "Vaittinen, Matti" <Matti.Vaittinen@fi.rohmeurope.com>
To: "mazziesaccount@gmail.com" <mazziesaccount@gmail.com>,
"dmurphy@ti.com" <dmurphy@ti.com>
Cc: "linux-leds@vger.kernel.org" <linux-leds@vger.kernel.org>,
"linux-rtc@vger.kernel.org" <linux-rtc@vger.kernel.org>,
"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
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"mturquette@baylibre.com" <mturquette@baylibre.com>,
"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
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"lee.jones@linaro.org" <lee.jones@linaro.org>,
"broonie@kernel.org" <broonie@kernel.org>,
"pavel@ucw.cz" <pavel@ucw.cz>
Subject: Re: [RFC PATCH v3 04/15] dt-bindings: leds: ROHM BD71282 PMIC LED driver
Date: Wed, 6 Nov 2019 13:05:05 +0000 [thread overview]
Message-ID: <113d20653c41a311b0c5227eb5bbc6ad43d24c2c.camel@fi.rohmeurope.com> (raw)
In-Reply-To: <37d85b2d-8fca-a998-95ae-61f0c049054d@ti.com>
Hello Dan,
Thanks for the check once again!
On Tue, 2019-11-05 at 13:14 -0600, Dan Murphy wrote:
> Matti
>
> On 11/1/19 6:32 AM, Matti Vaittinen wrote:
> > Document ROHM BD71828 PMIC LED driver device tree bindings.
> >
> > Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
> > ---
> >
> > Changes from v2 - new patch
> >
> > .../bindings/leds/rohm,leds-bd71828.yaml | 46
> > +++++++++++++++++++
> > 1 file changed, 46 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/leds/rohm,leds-bd71828.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/leds/rohm,leds-
> > bd71828.yaml b/Documentation/devicetree/bindings/leds/rohm,leds-
> > bd71828.yaml
> > new file mode 100644
> > index 000000000000..d8aeac9911ef
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/leds/rohm,leds-bd71828.yaml
> > @@ -0,0 +1,46 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/leds/rohm,leds-bd71828.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: ROHM BD71828 Power Management Integrated Circuit LED driver
> > +
> > +maintainers:
> > + - Jacek Anaszewski <jacek.anaszewski@gmail.com>
> > + - Pavel Machek <pavel@ucw.cz>
> > + - Dan Murphy <dmurphy@ti.com>
> > + - Rob Herring <robh+dt@kernel.org>
> > + - Mark Rutland <mark.rutland@arm.com>
> I believe you are the maintainer of this driver not the maintainers
Right. Thanks for pointing that out.
> > +
> > +description: |
> > + This module is part of the ROHM BD71828 MFD device. For more
> > details
> > + see Documentation/devicetree/bindings/mfd/rohm,bd71828-
> > pmic.yaml.
> > +
> > + The LED controller is represented as a sub-node of the PMIC node
> > on the device
> > + tree.
> > +
> > + The device has two LED outputs referred as GRNLED and AMBLED in
> > data-sheet.
> > +
> > +properties:
> > + compatible:
> > + const: rohm,bd71828-led
> > +
> > +patternProperties:
> > + "^led-[1-2]$":
> > + type: object
> > + description:
> > + Properties for a single LED. Nodes must be named as led-1
> > and led-2.
>
> Why is this required? Can't we use the reg as the number and then
> we
> can use standard node labels
This was related to my idea of using the node-names as unique keys.
Please see:
https://lore.kernel.org/lkml/cover.1572351774.git.matti.vaittinen@fi.rohmeurope.com/
What would you expect the reg = <>; to describe from HW?
> like led@<reg value>. Then we can check in the code to make sure
> that
> the output is not out of bounds.
>
> > + properties:
> > + #$ref: "common.yaml#"
> > + function:
> > + description:
> > + Purpose of LED as defined in dt-bindings/leds/common.h
> > + $ref: "/schemas/types.yaml#/definitions/string"
> > + color:
> > + description:
> > + LED colour as defined in dt-bindings/leds/common.h
>
> s/colour/color
That depends on your location :)
> But again I believe it is indicated above that the LEDs are either
> going
> to be green or amber. Unless they can be any color.
This was my original reason for omitting the DT for BD71828 LEDs
altogether. LEDs are expected to be green and amber - but it is true
that PMIC can not ensure there will be no other colours.
> Are there plans to make sure that the color is either green or amber
> in
> the code? I don't see a patch for the code in this series
Yes. As I wrote in cover-letter, the LED driver is pending until I see
how the RFC for adding LED node finding and some more common property
parsing to LED core is received by others. (Although I do understand if
you didn't read the cover-letter. It's quite a bunch of text and
reading it over and over again is no fun).
>
> > + $ref: "/schemas/types.yaml#/definitions/uint32"
> > +
> > +required:
> > + - compatible
>
> Is there an example of the node and properties?
Yes, in MFD doc.
Br,
Matti Vaittinen
next prev parent reply other threads:[~2019-11-06 13:05 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-01 11:28 [RFC PATCH v3 00/15] Support ROHM BD71828 PMIC Matti Vaittinen
2019-11-01 11:29 ` [RFC PATCH v3 01/15] mfd: bd71828: Support ROHM BD71828 PMIC - core Matti Vaittinen
2019-11-11 10:57 ` Lee Jones
2019-11-11 11:20 ` Vaittinen, Matti
2019-11-01 11:31 ` [RFC PATCH v3 02/15] dt-bindings: mfd: Document ROHM BD71828 bindings Matti Vaittinen
2019-11-05 20:43 ` Rob Herring
2019-11-06 12:55 ` SPAM (R/EU IT) // " Vaittinen, Matti
2019-11-01 11:31 ` [RFC PATCH v3 03/15] dt-bindings: regulator: Document ROHM BD71282 regulator bindings Matti Vaittinen
2019-11-05 20:52 ` Rob Herring
2019-11-07 6:50 ` SPAM (R/EU IT) // " Vaittinen, Matti
2019-11-01 11:32 ` [RFC PATCH v3 04/15] dt-bindings: leds: ROHM BD71282 PMIC LED driver Matti Vaittinen
2019-11-05 19:14 ` Dan Murphy
2019-11-05 20:59 ` Rob Herring
2019-11-06 13:05 ` Vaittinen, Matti [this message]
2019-11-05 20:57 ` Rob Herring
2019-11-01 11:33 ` [RFC PATCH v3 05/15] mfd: input: bd71828: Add power-key support Matti Vaittinen
2019-11-11 10:59 ` Lee Jones
2019-11-11 11:07 ` Vaittinen, Matti
2019-11-01 11:38 ` [RFC PATCH v3 06/15] clk: bd718x7: Support ROHM BD71828 clk block Matti Vaittinen
2019-11-01 11:39 ` [RFC PATCH v3 07/15] clk: bd718x7: simplify header dependencies Matti Vaittinen
2019-11-01 11:41 ` [RFC PATCH v3 08/15] regulator: bd718x7: Split driver to common and bd718x7 specific parts Matti Vaittinen
2019-11-01 11:42 ` [RFC PATCH v3 09/15] regulator: bd71828: Basic support for ROHM bd71828 PMIC regulators Matti Vaittinen
2019-11-01 11:43 ` [RFC PATCH v3 10/15] regulator: bd71828: Add GPIO based run-level control for regulators Matti Vaittinen
2019-11-03 22:27 ` Linus Walleij
2019-11-04 7:05 ` Vaittinen, Matti
2019-11-05 13:24 ` Linus Walleij
2019-11-05 14:07 ` Vaittinen, Matti
2019-11-01 11:44 ` [RFC PATCH v3 11/15] regulator: bd71828: enhanced run-level support Matti Vaittinen
2019-11-01 11:45 ` [RFC PATCH v3 12/15] regulator: bd71828: Support in-kernel APIs to change run-level Matti Vaittinen
2019-11-01 11:49 ` [RFC PATCH v3 13/15] rtc: bd70528 add BD71828 support Matti Vaittinen
2019-11-01 11:49 ` [RFC PATCH v3 14/15] gpio: Add definition for GPIO direction Matti Vaittinen
2019-11-03 22:30 ` Linus Walleij
2019-11-04 6:57 ` Vaittinen, Matti
2019-11-04 15:48 ` Vaittinen, Matti
2019-11-05 15:05 ` Linus Walleij
2019-11-06 6:51 ` Vaittinen, Matti
2019-11-01 11:51 ` [RFC PATCH v3 15/15] gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs Matti Vaittinen
2019-11-01 11:53 ` [RFC PATCH v3 00/15] Support ROHM BD71828 PMIC Vaittinen, Matti
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