From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Robin van der Gracht <robin@protonic.nl>
Cc: Rob Herring <robh+dt@kernel.org>, Miguel Ojeda <ojeda@kernel.org>,
Paul Burton <paulburton@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@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 02/17] dt-bindings: auxdisplay: ht16k33: Document Adafruit segment displays
Date: Tue, 18 May 2021 16:35:16 +0200 [thread overview]
Message-ID: <CAMuHMdXN9bPnEjXJUWszS5iwuVLBHJV7c+jhBU1t1EXnAnFYig@mail.gmail.com> (raw)
In-Reply-To: <fb42abb0e79a57e2aab123468d95ff7e@protonic.nl>
Hoi Robin,
On Tue, Mar 23, 2021 at 10:12 AM robin <robin@protonic.nl> wrote:
> On 2021-03-22 15:48, 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
> > +
> > + - const: holtek,ht16k33 # Generic 16*8 LED controller with
> > dot-matrix display
> >
> > reg:
> > maxItems: 1
> >
> > refresh-rate-hz:
> > maxItems: 1
> > - description: Display update interval in Hertz
> > + description: Display update interval in Hertz for dot-matrix
> > displays
>
> The above should be included in patch 16
I disagree: bindings are independent from the driver implementation.
> > interrupts:
> > maxItems: 1
> > @@ -41,10 +50,17 @@ properties:
> > default: 16
> > description: Initial brightness level
> >
> > + color: true
> > + description:
> > + Color of the display. Use one of the LED_COLOR_ID_* prefixed
> > definitions
> > + from the header include/dt-bindings/leds/common.h. The default
> > is red.
> > + minimum: 0
> > + maximum: 9
> > + default: 1
> > +
>
> The above should be included in patch 17
Same here.
> > required:
> > - compatible
> > - reg
> > - - refresh-rate-hz
>
> 'refresh-rate-hz' is still a required property for the dot-matrix /
> fbdev setup.
True.
> If it can no longer be listed here than maybe its nice to mention that
> it's required
> somewhere else (in it's description?).
if:
properties:
compatible:
const: holtek,ht16k33
then:
required:
- refresh-rate-hz
Thanks!
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:[~2021-05-18 14:35 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 14:48 [PATCH 00/17] auxdisplay: ht16k33: Add character display support Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 01/17] uapi: Add <linux/map_to_14segment.h> Geert Uytterhoeven
2021-03-22 17:05 ` Miguel Ojeda
2021-03-22 17:51 ` Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 02/17] dt-bindings: auxdisplay: ht16k33: Document Adafruit segment displays Geert Uytterhoeven
2021-03-22 17:38 ` Rob Herring
2021-03-23 9:12 ` robin
2021-05-18 14:35 ` Geert Uytterhoeven [this message]
2021-05-19 10:37 ` Robin van der Gracht
2021-05-19 11:02 ` Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 03/17] auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 04/17] auxdisplay: img-ascii-lcd: Add helper variable dev Geert Uytterhoeven
2021-03-22 16:59 ` Miguel Ojeda
2021-03-22 17:53 ` Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 05/17] auxdisplay: img-ascii-lcd: Convert device attribute to sysfs_emit() Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 06/17] auxdisplay: Extract character line display core support Geert Uytterhoeven
2021-03-23 8:18 ` robin
2021-03-23 8:52 ` Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 07/17] auxdisplay: linedisp: Use kmemdup_nul() helper Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 08/17] auxdisplay: linedisp: Add support for changing scroll rate Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 09/17] auxdisplay: ht16k33: Use HT16K33_FB_SIZE in ht16k33_initialize() Geert Uytterhoeven
2021-03-23 7:59 ` robin
2021-03-22 14:48 ` [PATCH 10/17] auxdisplay: ht16k33: Remove unneeded error check in keypad probe() Geert Uytterhoeven
2021-03-23 8:08 ` robin
2021-03-22 14:48 ` [PATCH 11/17] auxdisplay: ht16k33: Convert to simple i2c probe function Geert Uytterhoeven
2021-03-23 8:31 ` robin
2021-03-22 14:48 ` [PATCH 12/17] auxdisplay: ht16k33: Add helper variable dev Geert Uytterhoeven
2021-03-23 8:57 ` robin
2021-03-22 14:48 ` [PATCH 13/17] auxdisplay: ht16k33: Move delayed work Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 14/17] auxdisplay: ht16k33: Extract ht16k33_brightness_set() Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 15/17] auxdisplay: ht16k33: Extract frame buffer probing Geert Uytterhoeven
2021-03-22 14:48 ` [PATCH 16/17] auxdisplay: ht16k33: Add support for segment displays Geert Uytterhoeven
2021-03-29 7:08 ` Robin van der Gracht
2021-03-29 7:15 ` Geert Uytterhoeven
2021-03-29 7:30 ` Robin van der Gracht
2021-03-22 14:48 ` [PATCH 17/17] auxdisplay: ht16k33: Add segment display LED support Geert Uytterhoeven
2021-03-23 10:08 ` Robin van der Gracht
2021-03-23 12:32 ` Geert Uytterhoeven
2021-03-23 20:40 ` Pavel Machek
2021-03-24 8:31 ` Geert Uytterhoeven
2021-03-27 22:19 ` Pavel Machek
2021-06-25 12:39 ` Geert Uytterhoeven
2021-03-22 17:03 ` [PATCH 00/17] auxdisplay: ht16k33: Add character display support Miguel Ojeda
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