linux-kernel - Re: [PATCH v2 2/7] dt-bindings: clock: renesas,r9a06g032-sysctrl: Add h2mode property

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Message-ID: <a1a7fdf4-2608-d6c9-7c7a-f8e8fae3a742@linaro.org>
Date:   Tue, 15 Nov 2022 14:05:37 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Herve Codina <herve.codina@...tlin.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Gareth Williams <gareth.williams.jx@...esas.com>
Cc:     linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: Re: [PATCH v2 2/7] dt-bindings: clock: renesas,r9a06g032-sysctrl: Add
 h2mode property

On 14/11/2022 12:15, Herve Codina wrote:
> Add the h2mode property to force the USBs mode ie:
>  - 2 hosts
> or
>  - 1 host and 1 device
> 
> Signed-off-by: Herve Codina <herve.codina@...tlin.com>
> ---
>  .../bindings/clock/renesas,r9a06g032-sysctrl.yaml      | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
> index 95bf485c6cec..f9e0a58aa4fb 100644
> --- a/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
> +++ b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
> @@ -39,6 +39,16 @@ properties:
>    '#power-domain-cells':
>      const: 0
>  
> +  renesas,h2mode:
> +    description: |
> +      Configure the USBs mode.
> +        - <0> : the USBs are in 1 host and 1 device mode.
> +        - <1> : the USBs are in 2 host mode.
> +      If the property is not present, the value used is the one already present
> +      in the CFG_USB register (from reset or set by the bootloader).
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    enum: [0, 1]

0/1 are quite cryptic. Why not making it a string which is easy to read
and understand? Can be something like "two-hosts" and "one-host". Or
anything you find more readable...

Best regards,
Krzysztof