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From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: andy@kernel.org, geert@linux-m68k.org, robh+dt@kernel.org,
	 krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
	andrew@lunn.ch,  gregory.clement@bootlin.com,
	sebastian.hesselbarth@gmail.com,  ojeda@kernel.org,
	tzimmermann@suse.de, javierm@redhat.com, robin@protonic.nl,
	 lee@kernel.org, pavel@ucw.cz, devicetree@vger.kernel.org,
	 linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org,
	 linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 2/4] dt-bindings: auxdisplay: Add bindings for generic 7 segment LED
Date: Wed, 28 Feb 2024 02:03:59 +0200	[thread overview]
Message-ID: <CAHp75Vdi2c=s_z9wwxWzVcL+4tx5ZnXymbiN4O1FS+D3kz5vqw@mail.gmail.com> (raw)
In-Reply-To: <20240227212244.262710-3-chris.packham@alliedtelesis.co.nz>

On Tue, Feb 27, 2024 at 11:22 PM Chris Packham
<chris.packham@alliedtelesis.co.nz> wrote:

...

> +  segment-gpios:
> +    description:
> +      An array of GPIOs one per segment.

This is a vague description. Please explain the order (e.g., LSB =
'a', MSB = 'g'), use of DP (optional?), etc.

> +    minItems: 7

maxItems?

...

> +    led-7seg {

Probably it should be more human readable. DT people might suggest
something better.

> +        compatible = "generic-gpio-7seg";
> +        segment-gpios = <&gpio 0 GPIO_ACTIVE_LOW
> +                         &gpio 1 GPIO_ACTIVE_LOW
> +                         &gpio 2 GPIO_ACTIVE_LOW
> +                         &gpio 3 GPIO_ACTIVE_LOW
> +                         &gpio 4 GPIO_ACTIVE_LOW
> +                         &gpio 5 GPIO_ACTIVE_LOW
> +                         &gpio 6 GPIO_ACTIVE_LOW>;

Dunno how to handle DP. Either we always expect it to be here (as
placeholder) or with additional property.

> +    };

-- 
With Best Regards,
Andy Shevchenko

  parent reply	other threads:[~2024-02-28  0:04 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-27 21:22 [PATCH v2 0/4] auxdisplay: 7 segment LED display Chris Packham
2024-02-27 21:22 ` [PATCH v2 1/4] auxdisplay: Add 7 segment LED display driver Chris Packham
2024-02-27 22:13   ` Randy Dunlap
2024-02-27 23:56   ` Andy Shevchenko
2024-02-27 21:22 ` [PATCH v2 2/4] dt-bindings: auxdisplay: Add bindings for generic 7 segment LED Chris Packham
2024-02-27 22:19   ` Rob Herring
2024-02-28  0:03   ` Andy Shevchenko [this message]
2024-02-28  1:53     ` Chris Packham
2024-02-28 17:22       ` Andy Shevchenko
2024-02-28 14:04   ` Rob Herring
2024-02-28 14:57     ` Andy Shevchenko
2024-02-29  9:23       ` Geert Uytterhoeven
2024-02-29 10:42         ` Andy Shevchenko
2024-02-28 20:01     ` Chris Packham
2024-02-29  9:24       ` Geert Uytterhoeven
2024-02-29 10:44         ` andy
2024-02-27 21:22 ` [PATCH v2 3/4] ARM: dts: marvell: Add 7 segment LED display on x530 Chris Packham
2024-02-28  0:12   ` Andy Shevchenko
2024-02-27 21:22 ` [PATCH v2 4/4] ARM: dts: marvell: Indicate USB activity " Chris Packham
2024-02-28  0:09   ` Andy Shevchenko
2024-02-28  1:11     ` Chris Packham
2024-02-28  0:05 ` [PATCH v2 0/4] auxdisplay: 7 segment LED display Andy Shevchenko
2024-02-28  0:25   ` Chris Packham
2024-02-28 18:45     ` Andy Shevchenko

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