linux-kernel - Re: [PATCH 08/15] dt-bindings: clock: Document ma35d1 clock controller bindings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <13780a99-33bb-6387-d4e3-66bc8456c2f2@gmail.com>
Date:   Thu, 16 Mar 2023 11:24:54 +0800
From:   Jacky Huang <ychuang570808@...il.com>
To:     Stephen Boyd <sboyd@...nel.org>, gregkh@...uxfoundation.org,
        jirislaby@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        lee@...nel.org, mturquette@...libre.com, p.zabel@...gutronix.de,
        robh+dt@...nel.org
Cc:     devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        schung@...oton.com, Jacky Huang <ychuang3@...oton.com>
Subject: Re: [PATCH 08/15] dt-bindings: clock: Document ma35d1 clock
 controller bindings


Dear Stephen,


Thanks for your review.


On 2023/3/16 上午 05:59, Stephen Boyd wrote:
> Quoting Jacky Huang (2023-03-15 00:28:55)
>> diff --git a/Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml b/Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml
>> new file mode 100644
>> index 000000000000..5c2dea071b38
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml
>> @@ -0,0 +1,83 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/clock/nuvoton,ma35d1-clk.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Nuvoton MA35D1 Clock Controller Module Binding
> Binding is redundant.

I will remove this word.

>> +
>> +maintainers:
>> +  - Chi-Fang Li <cfli0@...oton.com>
>> +  - Jacky Huang <ychuang3@...oton.com>
>> +
>> +description: |
>> +  The MA35D1 clock controller generates clocks for the whole chip,
>> +  including system clocks and all peripheral clocks.
>> +
>> +  See also:
>> +    include/dt-bindings/clock/ma35d1-clk.h
>> +
>> +properties:
>> +  compatible:
>> +    items:
>> +      - const: nuvoton,ma35d1-clk
>> +      - const: syscon
> Does it really need to be a syscon?

Some registers of the clock controller are locked against writing.
Before writing, the lock must be unlocked through the system controller.
So syscon is needed.

>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  "#clock-cells":
>> +    const: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  clock-names:
>> +    const: clk_hxt
>> +
>> +  assigned-clocks:
>> +    maxItems: 5
>> +
>> +  assigned-clock-rates:
>> +    maxItems: 5
> I hope the assigned clocks properties can be left out of this doc.

Sure, we will remove it.

>> +
>> +  nuvoton,pll-mode:
>> +    description:
>> +      A list of PLL operation mode corresponding to CAPLL, DDRPLL, APLL,
>> +      EPLL, and VPLL in sequential. The operation mode value 0 is for
>> +      integer mode, 1 is for fractional mode, and 2 is for spread
>> +      spectrum mode.
>> +    $ref: /schemas/types.yaml#/definitions/uint32-array
>> +    maxItems: 5
>> +    items:
>> +      minimum: 0
>> +      maximum: 2
> Why not use a string?

OK, we'll use strings instead.

>> +
>> +  nuvoton,sys:
>> +    description:
>> +      Phandle to the system management controller.
>> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - "#clock-cells"
>> +  - clocks
>> +  - clock-names
>> +  - nuvoton,sys
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
> No need to include this header right?

Yes, I will remove this header in the next version.

>
>> +
>> +    clk: clock-controller@...60200 {
> Drop the label?

OK, I will drop this label in the next version.

>
>> +        compatible = "nuvoton,ma35d1-clk", "syscon";
>> +        reg = <0x40460200 0x100>;
>> +        #clock-cells = <1>;
>> +        clocks = <&clk_hxt>;
>> +        clock-names = "clk_hxt";
>> +        nuvoton,sys = <&sys>;
>> +    };


Best Regards,

Jacky Huang