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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>
This commit is contained in:
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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8
Documentation/devicetree/bindings/usb/snps,dwc3.yaml
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@@ -260,6 +260,14 @@ properties:
of resume. This option is to support certain legacy ULPI PHYs.
type: boolean
snps,ulpi-ext-vbus-drv:
description:
Some ULPI USB PHY does not support internal VBUS supply, and driving
the CPEN pin, requires the configuration of the ulpi DRVVBUSEXTERNAL
bit. When set, the xhci host will configure the USB2 PHY drives VBUS
with an external supply.
type: boolean
snps,is-utmi-l1-suspend:
description:
True when DWC3 asserts output signal utmi_l1_suspend_n, false when