linux-kernel - Re: [PATCH 1/2] dt-bindings: misc: add binding for generic ripple counter

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Message-ID: <20210308172153.GA2505339@robh.at.kernel.org>
Date:   Mon, 8 Mar 2021 10:21:53 -0700
From:   Rob Herring <robh@...nel.org>
To:     Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>, linux-clk@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: misc: add binding for generic ripple
 counter

On Fri, Feb 26, 2021 at 03:14:10PM +0100, Rasmus Villemoes wrote:
> While a ripple counter can not usually be interfaced with (directly)
> from software, it may still be a crucial component in a board
> layout. To prevent its input clock from being disabled by the clock
> core because it apparently has no consumer, one needs to be able to
> represent that consumer in DT.

I'm okay with this as it is describing h/w, but we already 
'protected-clocks' property which should work.

> 
> Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
> ---
>  Documentation/devicetree/bindings/misc/ripple-ctr.txt | 8 ++++++++
>  1 file changed, 8 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/misc/ripple-ctr.txt
> 
> diff --git a/Documentation/devicetree/bindings/misc/ripple-ctr.txt b/Documentation/devicetree/bindings/misc/ripple-ctr.txt
> new file mode 100644
> index 000000000000..1497d3a237a7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/misc/ripple-ctr.txt
> @@ -0,0 +1,8 @@
> +Generic ripple counter
> +
> +A ripple counter is a simple component that can for example be used to
> +delay propagation of a signal.
> +
> +Required properties:
> +- compatible: Must be "linux,ripple-ctr".

Nothing linux specific about this.

> +- clocks: Input clock specifier. Refer to common clock bindings.
> -- 
> 2.29.2
>