linux-kernel - Re: [PATCH 1/5] dt-bindings: clock: Add Bitmain BM1880 SoC clock controller binding

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Date:   Wed, 07 Aug 2019 22:01:28 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        mturquette@...libre.com, robh+dt@...nel.org
Cc:     linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        haitao.suo@...main.com, darren.tsao@...main.com,
        fisher.cheng@...main.com, alec.lin@...main.com,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Subject: Re: [PATCH 1/5] dt-bindings: clock: Add Bitmain BM1880 SoC clock controller binding

Quoting Manivannan Sadhasivam (2019-07-05 08:14:36)
> Add devicetree binding for Bitmain BM1880 SoC clock controller.
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
>  .../bindings/clock/bitmain,bm1880-clk.txt     | 47 +++++++++++

Can you convert this to YAML? It's all the rage right now.

>  include/dt-bindings/clock/bm1880-clock.h      | 82 +++++++++++++++++++
>  2 files changed, 129 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.txt
>  create mode 100644 include/dt-bindings/clock/bm1880-clock.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.txt b/Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.txt
> new file mode 100644
> index 000000000000..9c967095d430
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.txt
> @@ -0,0 +1,47 @@
> +* Bitmain BM1880 Clock Controller
> +
> +The Bitmain BM1880 clock controler generates and supplies clock to
> +various peripherals within the SoC.
> +
> +Required Properties:
> +
> +- compatible: Should be "bitmain,bm1880-clk"
> +- reg :        Register address and size of PLL and SYS control domains
> +- reg-names : Register domain names: "pll" and "sys"
> +- clocks : Phandle of the input reference clock.
> +- #clock-cells: Should be 1.
> +
> +Each clock is assigned an identifier, and client nodes can use this identifier
> +to specify the clock which they consume.
> +
> +All available clocks are defined as preprocessor macros in corresponding
> +dt-bindings/clock/bm1880-clock.h header and can be used in device tree sources.
> +
> +External clocks:
> +
> +The osc clock used as the input for the plls is generated outside the SoC.
> +It is expected that it is defined using standard clock bindings as "osc".
> +
> +Example: 
> +
> +        clk: clock-controller@800 {
> +                compatible = "bitmain,bm1880-clk";
> +                reg = <0xe8 0x0c>,<0x800 0xb0>;

It looks weird still. What hardware module is this actually part of?
Some larger power manager block?

> +                reg-names = "pll", "sys";
> +                clocks = <&osc>;
> +                #clock-cells = <1>;
> +        };
> +