From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Piyush Mehta <piyush.mehta@amd.com>,
gregkh@linuxfoundation.org, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, balbi@kernel.org,
Thinh.Nguyen@synopsys.com
Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, michal.simek@amd.com,
siva.durga.prasad.paladugu@amd.com, git@amd.com
Subject: Re: [PATCH 1/2] dt-bindings: usb: dwc3: Add snps,ulpi-ext-vbus-drv quirk
Date: Thu, 16 Feb 2023 10:20:18 +0100 [thread overview]
Message-ID: <cf375c2d-cb73-7d24-1394-c0eeb10ea048@linaro.org> (raw)
In-Reply-To: <20230215093146.5812-2-piyush.mehta@amd.com>
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@amd.com>
> ---
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Best regards,
Krzysztof
next prev parent reply other threads:[~2023-02-16 9:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-15 9:31 [PATCH 0/2] usb: dwc3: core: add external vBus supply support for ulpi phy Piyush Mehta
2023-02-15 9:31 ` [PATCH 1/2] dt-bindings: usb: dwc3: Add snps,ulpi-ext-vbus-drv quirk Piyush Mehta
2023-02-16 9:20 ` Krzysztof Kozlowski [this message]
2023-02-15 9:31 ` [PATCH 2/2] usb: dwc3: core: add external vBus supply support for ulpi phy Piyush Mehta
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