linux-kernel - Re: [PATCH 1/2] dt-bindings: clock: Add reg-clock-controller

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Date:   Mon, 17 Apr 2023 15:49:34 -0500
From:   Rob Herring <robh@...nel.org>
To:     David Yang <mmyangfl@...il.com>
Cc:     linux-clk@...r.kernel.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: clock: Add reg-clock-controller

On Sat, Apr 15, 2023 at 02:12:59AM +0800, David Yang wrote:
> Add DT bindings documentation for reg-clock-controller, collection of
> basic clocks common to many platforms.
> 
> Signed-off-by: David Yang <mmyangfl@...il.com>
> ---
>  .../bindings/clock/reg-clock-controller.yaml  | 245 ++++++++++++++++++
>  1 file changed, 245 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/reg-clock-controller.yaml
> 
> diff --git a/Documentation/devicetree/bindings/clock/reg-clock-controller.yaml b/Documentation/devicetree/bindings/clock/reg-clock-controller.yaml
> new file mode 100644
> index 000000000000..a6a7e0b05821
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/reg-clock-controller.yaml
> @@ -0,0 +1,245 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/reg-clock-controller.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Simple straight-forward register-based clocks

'simple' means extended one property at a time with little foresight. In 
the end, 'simple' bindings are never simple. s/simple/generic/ as well.

When we first started the clock binding, we had exactly this. There's 
still bindings for at least some of it. It turned out to be a bad 
idea because it was difficult to get correct and complete. So this 
binding is exactly what we don't want.

Rob