linux-kernel - Re: [PATCH 13/25] ASoC: dt-bindings: meson: axg-pdm: document 'sysrate' property

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Date: Fri, 15 Mar 2024 11:00:14 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Jan Dakinevich <jan.dakinevich@...utedevices.com>,
 Neil Armstrong <neil.armstrong@...aro.org>,
 Jerome Brunet <jbrunet@...libre.com>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>,
 Kevin Hilman <khilman@...libre.com>,
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
 Linus Walleij <linus.walleij@...aro.org>, Jaroslav Kysela <perex@...ex.cz>,
 Takashi Iwai <tiwai@...e.com>, linux-amlogic@...ts.infradead.org,
 linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 alsa-devel@...a-project.org, linux-sound@...r.kernel.org,
 linux-gpio@...r.kernel.org
Cc: kernel@...utedevices.com
Subject: Re: [PATCH 13/25] ASoC: dt-bindings: meson: axg-pdm: document
 'sysrate' property

On 15/03/2024 00:21, Jan Dakinevich wrote:
> This option allow to redefine the rate of DSP system clock.

And why is it suitable for bindings? Describe the hardware, not what you
want to do in the driver.

> 
> Signed-off-by: Jan Dakinevich <jan.dakinevich@...utedevices.com>
> ---
>  Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml b/Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml
> index df21dd72fc65..d2f23a59a6b6 100644
> --- a/Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml
> +++ b/Documentation/devicetree/bindings/sound/amlogic,axg-pdm.yaml
> @@ -40,6 +40,10 @@ properties:
>    resets:
>      maxItems: 1
>  
> +  sysrate:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: redefine rate of DSP system clock

No vendor prefix, so is it a generic property? Also, missing unit
suffix, but more importantly I don't understand why this is a property
of hardware.

Best regards,
Krzysztof