linux-kernel - Re: [PATCH v2 1/2] dt-bindings: clock: Add binding documentation for TI syscon gate clock

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Message-ID: <f42d90ca-0078-7ae4-c9b1-a9d23dd251e3@ti.com>
Date:   Sat, 15 Feb 2020 18:07:34 +0530
From:   Vignesh Raghavendra <vigneshr@...com>
To:     Stephen Boyd <sboyd@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Santosh Shilimkar <ssantosh@...nel.org>
CC:     <linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Tero Kristo <t-kristo@...com>
Subject: Re: [PATCH v2 1/2] dt-bindings: clock: Add binding documentation for
 TI syscon gate clock

Hi,

On 2/11/2020 12:15 AM, Stephen Boyd wrote:
> Quoting Vignesh Raghavendra (2020-02-06 20:44:24)
[...]
>> +  - Vignesh Raghavendra <vigneshr@...com>
>> +
>> +description: |
>> +
>> +  This binding uses common clock bindings
>> +  Documentation/devicetree/bindings/clock/clock-bindings.txt
> 
> Maybe have a real description instead of this line which is mostly
> useless.
> 

Will drop this line..

>> +
>> +properties:
>> +  compatible:
>> +    items:
> 
> I think you can drop items.
> 
>> +      - const: ti,am654-ehrpwm-tbclk
>> +
>> +  "#clock-cells":
>> +    const: 1
>> +
>> +  ti,tbclk-syscon:
>> +    $ref: /schemas/types.yaml#/definitions/phandle
>> +    description:
>> +      Phandle to the system controller node that has bits to
>> +      control eHRPWM's TBCLK
>> +
>> +required:
>> +  - compatible
>> +  - "#clock-cells"
>> +  - ti,tbclk-syscon
>> +
>> +examples:
>> +  - |
>> +    tbclk_ctrl: tbclk_ctrl@...0 {
>> +        compatible = "syscon";
>> +        reg = <0x4140 0x18>;
>> +    };
>> +
>> +    ehrpwm_tbclk: clk0 {
>> +        compatible = "ti,am654-ehrpwm-tbclk";
>> +        #clock-cells = <1>;
>> +        ti,tbclk-syscon = <&tbclk_ctrl>;
>> +    };
> 
> I don't understand the binding. Why can't the syscon node register clks
> and have #clock-cells?
> 

I did not know that would work. Will make syscon code to register clks..
Thanks!

Regards
Vignesh