dt-bindings: usb: dwc3: Add snps,ulpi-ext-vbus-drv quirk

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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>
Link: https://lore.kernel.org/r/20230215093146.5812-2-piyush.mehta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Piyush Mehta 2023-02-15 15:01:45 +05:30 • committed by Greg Kroah-Hartman

parent aa78a736a9

commit 487e6f420b

1 changed files with 8 additions and 0 deletions

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Documentation/devicetree/bindings/usb/snps,dwc3.yaml

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