linux-kernel - Re: [PATCH 1/2] dt-bindings: usb: dwc3: Add snps,ulpi-ext-vbus-drv quirk

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Date:   Thu, 16 Feb 2023 10:20:18 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Piyush Mehta <piyush.mehta@....com>, gregkh@...uxfoundation.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        balbi@...nel.org, Thinh.Nguyen@...opsys.com
Cc:     linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, michal.simek@....com,
        siva.durga.prasad.paladugu@....com, git@....com
Subject: Re: [PATCH 1/2] dt-bindings: usb: dwc3: Add snps,ulpi-ext-vbus-drv
 quirk

On 15/02/2023 10:31, Piyush Mehta wrote:
> Some ULPI USB PHYs do not support an internal vBus supply, to drive the
> CPEN pin properly, it requires configuration of the ULPI DRVVBUSEXTERNAL
> bit of the USB ULPI PHY OTG_CTRL register.
> 
> Added 'snps,ulpi-ext-vbus-drv' DT property to configure the USB2 PHY to
> drives VBUS with an external supply.
> 
> When the ULPIEXTVBUSDRV bit is set to '1' in the Global USB2 PHY
> Configuration registers, PHY drive vBus with an external 5V supply source.
> 
> Signed-off-by: Piyush Mehta <piyush.mehta@....com>
> ---


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof