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From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Bryan O'Donoghue <bryan.odonoghue@linaro.org>,
	agross@kernel.org, andersson@kernel.org, vkoul@kernel.org,
	kishon@kernel.org, robh+dt@kernel.org,
	krzysztof.kozlowski+dt@linaro.org
Cc: konrad.dybcio@linaro.org, linux-arm-msm@vger.kernel.org,
	linux-phy@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [PATCH v2 1/2] dt-bindings: phy: Add qcom,dp-manual-pullup description
Date: Fri, 30 Dec 2022 09:21:56 +0100	[thread overview]
Message-ID: <b23c9e9d-35ea-ebc7-eb18-46fd0c9f3d45@linaro.org> (raw)
In-Reply-To: <20221229183410.683584-2-bryan.odonoghue@linaro.org>

On 29/12/2022 19:34, Bryan O'Donoghue wrote:
> The original Qualcomm driver for the HighSpeed USB PHY contains a flag
> which tells the driver that the controller and PHY do not connect to VBUS.
> 
> In this case an external IC such as a Type-C port manager supplies VBUS and
> the VBUS signal is not routed to the SoC. This means we cannot detect the
> presence or absence of VBUS and cannot take action based on it.
> 
> Document the downstream boolean qcom,dp-manual-pullup to allow the HS PHY
> implement the necessary logic.
> 
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
> ---
>  Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.yaml
> index aa97478dd0161..c55a59df71ad0 100644
> --- a/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.yaml
> +++ b/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.yaml
> @@ -80,6 +80,13 @@ properties:
>              the address is offset from the ULPI_EXT_VENDOR_SPECIFIC address
>          - description: value
>  
> +  qcom,dp-manual-pullup:
> +    type: boolean
> +    description: This flag indicates to the HS USB PHY driver that it should

Drop references to the driver and rephrase it to describe the controller
behavior/feature or the board layout/configuration, not the driver. The
same applies to property name - "manual pullup" is describing driver,
not hardware.

> +                 enable or disable an internal pullup when powering on or
> +                 powering off the HS PHY instead of toggling the value when VBUS
> +                 is absent or present.

Wrong indentation. It's two spaces.

> +
>  required:
>    - clocks
>    - clock-names

Best regards,
Krzysztof


  parent reply	other threads:[~2022-12-30  8:22 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-29 18:34 [PATCH v2 0/2] qcom: Add a method to manually toggle the DP pullup on HS USB PHY Bryan O'Donoghue
2022-12-29 18:34 ` [PATCH v2 1/2] dt-bindings: phy: Add qcom,dp-manual-pullup description Bryan O'Donoghue
2022-12-29 18:57   ` Stephan Gerhold
2022-12-29 19:48     ` Bryan O'Donoghue
2022-12-29 20:43       ` Stephan Gerhold
2022-12-30  8:21   ` Krzysztof Kozlowski [this message]
2022-12-29 18:34 ` [PATCH v2 2/2] phy: qcom-usb-hs: Add qcom,dp-manual-pullup logic Bryan O'Donoghue
2022-12-29 19:45   ` Stephan Gerhold
2022-12-29 19:55     ` Bryan O'Donoghue
2022-12-29 21:02     ` Stephan Gerhold
2022-12-29 21:05       ` Bryan O'Donoghue
2022-12-29 21:11         ` Stephan Gerhold
2022-12-29 21:20           ` Bryan O'Donoghue
2022-12-29 21:41             ` Stephan Gerhold
2022-12-29 23:38               ` Bryan O'Donoghue
2022-12-30 12:05                 ` Stephan Gerhold

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