From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Rob Herring <robh@kernel.org>
Cc: Robin van der Gracht <robin@protonic.nl>,
Miguel Ojeda <ojeda@kernel.org>,
Paul Burton <paulburton@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Pavel Machek <pavel@ucw.cz>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
linux-leds <linux-leds@vger.kernel.org>,
"open list:BROADCOM NVRAM DRIVER" <linux-mips@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 02/18] dt-bindings: auxdisplay: ht16k33: Document Adafruit segment displays
Date: Thu, 15 Jul 2021 09:12:40 +0200 [thread overview]
Message-ID: <CAMuHMdVso6wpX-u6oG+i1B3=4NFO4tyZgQmQW-nG5MQH27t9BA@mail.gmail.com> (raw)
In-Reply-To: <20210714203624.GA3466861@robh.at.kernel.org>
Hi Rob,
Note that you commented on v2, while I posted v3 yesterday.
On Wed, Jul 14, 2021 at 10:36 PM Rob Herring <robh@kernel.org> wrote:
> On Fri, Jun 25, 2021 at 02:58:46PM +0200, Geert Uytterhoeven wrote:
> > The Holtek HT16K33 LED controller is not only used for driving
> > dot-matrix displays, but also for driving segment displays.
> >
> > Document compatible values for the Adafruit 7-segment[1] and
> > 14-segment[2] FeatherWing expansion boards with red displays. According
> > to the schematics, all other Adafruit 7-segment and 14-segment display
> > backpack and FeatherWing expansion boards (including bare boards and
> > boards fitted with displays) are compatible with these two boards.
> > Add a "color" property to support the different color variants.
> >
> > [1] https://www.adafruit.com/product/3108
> > [2] https://www.adafruit.com/product/3130
> >
> > Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
> > --- a/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
> > +++ b/Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml
> > @@ -14,14 +14,23 @@ allOf:
> >
> > properties:
> > compatible:
> > - const: holtek,ht16k33
> > + oneOf:
> > + - items:
> > + - const: adafruit,3108 # 0.56" 4-Digit 7-Segment FeatherWing Display (Red)
> > + - const: holtek,ht16k33
> > +
> > + - items:
> > + - const: adafruit,3130 # 0.54" Quad Alphanumeric FeatherWing Display (Red)
> > + - const: holtek,ht16k33
>
> These 2 entries can be combined.
Right. This split dates back from when I considered adding all
possible compatible values. It can indeed be simplified to:
- enum:
- adafruit,3108 # 0.56" 4-Digit 7-Segment FeatherWing
Display (Red)
- adafruit,3130 # 0.54" Quad Alphanumeric FeatherWing
Display (Red)
- const: holtek,ht16k33
> Or make the comment a 'description'.
What do you mean?
>
> > +
> > + - const: holtek,ht16k33 # Generic 16*8 LED controller with dot-matrix display
> > required:
> > - compatible
> > - reg
> > - - refresh-rate-hz
> > +
> > +if:
> > + properties:
> > + compatible:
> > + const: holtek,ht16k33
>
> Isn't this always true?
It is false if there is more than one compatible value.
>
> > +then:
> > + required:
> > + - refresh-rate-hz
> >
> > additionalProperties: false
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
next prev parent reply other threads:[~2021-07-15 7:12 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-25 12:58 [PATCH v2 00/18] auxdisplay: ht16k33: Add character display support Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 01/18] uapi: Add <linux/map_to_14segment.h> Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 02/18] dt-bindings: auxdisplay: ht16k33: Document Adafruit segment displays Geert Uytterhoeven
2021-07-14 20:36 ` Rob Herring
2021-07-15 7:12 ` Geert Uytterhoeven [this message]
2021-07-15 14:32 ` Rob Herring
2021-07-15 15:06 ` Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 03/18] auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 04/18] auxdisplay: img-ascii-lcd: Add helper variable dev Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 05/18] auxdisplay: img-ascii-lcd: Convert device attribute to sysfs_emit() Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 06/18] auxdisplay: Extract character line display core support Geert Uytterhoeven
2021-06-25 23:35 ` kernel test robot
2021-06-28 10:17 ` Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 07/18] auxdisplay: linedisp: Use kmemdup_nul() helper Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 08/18] auxdisplay: linedisp: Add support for changing scroll rate Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 09/18] auxdisplay: ht16k33: Connect backlight to fbdev Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 10/18] auxdisplay: ht16k33: Use HT16K33_FB_SIZE in ht16k33_initialize() Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 11/18] auxdisplay: ht16k33: Remove unneeded error check in keypad probe() Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 12/18] auxdisplay: ht16k33: Convert to simple i2c probe function Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 13/18] auxdisplay: ht16k33: Add helper variable dev Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 14/18] auxdisplay: ht16k33: Move delayed work Geert Uytterhoeven
2021-06-25 12:58 ` [PATCH v2 15/18] auxdisplay: ht16k33: Extract ht16k33_brightness_set() Geert Uytterhoeven
2021-06-25 12:59 ` [PATCH v2 16/18] auxdisplay: ht16k33: Extract frame buffer probing Geert Uytterhoeven
2021-06-25 12:59 ` [PATCH v2 17/18] auxdisplay: ht16k33: Add support for segment displays Geert Uytterhoeven
2021-06-25 12:59 ` [PATCH v2 18/18] auxdisplay: ht16k33: Add segment display LED support Geert Uytterhoeven
2021-06-25 20:39 ` Marek Behun
2021-06-25 20:40 ` Marek Behun
2021-06-28 9:21 ` Geert Uytterhoeven
2021-06-28 9:21 ` Geert Uytterhoeven
2021-06-28 10:15 ` Marek Behun
2021-06-28 15:33 ` Geert Uytterhoeven
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