linux-kernel - Re: [RESEND PATCH 1/2] dt-bindings: phy: mediatek,xsphy: add property to set disconnect threshold

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Message-ID: <20250113-aerobics-tall-e570d8bbcf2c@spud>
Date: Mon, 13 Jan 2025 18:30:43 +0000
From: Conor Dooley <conor@...nel.org>
To: Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc: Vinod Koul <vkoul@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, linux-phy@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH 1/2] dt-bindings: phy: mediatek,xsphy: add
 property to set disconnect threshold

On Sat, Jan 11, 2025 at 10:15:41PM +0800, Chunfeng Yun wrote:
> Add a property to tune usb2 phy's disconnect threshold.
> And add a compatible for mt8196.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> ---
> based on kernel 6.13-rc1
> 
> this property is porting from t-phy driver, due to the u2 phy are similar.
> ---
>  Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> index a9e3139fd421..2e012d5e1da1 100644
> --- a/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> +++ b/Documentation/devicetree/bindings/phy/mediatek,xsphy.yaml
> @@ -49,6 +49,7 @@ properties:
>        - enum:
>            - mediatek,mt3611-xsphy
>            - mediatek,mt3612-xsphy
> +          - mediatek,mt8196-xsphy
>        - const: mediatek,xsphy
>  
>    reg:
> @@ -129,6 +130,13 @@ patternProperties:
>          minimum: 1
>          maximum: 7
>  
> +      mediatek,discth:
> +        description:
> +          The selection of disconnect threshold (U2 phy)
> +        $ref: /schemas/types.yaml#/definitions/uint32
> +        minimum: 1
> +        maximum: 15

What unit is this? Unitless? How are the values determined?

> +
>        mediatek,efuse-intr:
>          description:
>            The selection of Internal Resistor (U2/U3 phy)
> -- 
> 2.46.0
> 

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