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dt-bindings: usb: ti,hd3ss3220: Add support for VBUS based on ID state 

Update the bindings to support reading ID state and VBUS, as per the
HD3SS3220 data sheet. The ID pin is kept high if VBUS is not at VSafe0V and
asserted low once VBUS is at VSafe0V, enforcing the Type-C requirement that
VBUS must be at VSafe0V before re-enabling VBUS.

Add id-gpios property to describe the input gpio for USB ID pin.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Link: https://patch.msgid.link/20251111072025.2199142-2-krishna.kurapati@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/1354/merge
Krishna Kurapati 2025-11-11 12:50:24 +05:30 committed by Greg Kroah-Hartman
parent 1052864d7d
commit d53bdaae89
1 changed files with 8 additions and 0 deletions
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8
Documentation/devicetree/bindings/usb/ti,hd3ss3220.yaml
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@ -25,6 +25,14 @@ properties:
interrupts:
maxItems: 1
id-gpios:
description:
An input gpio for USB ID pin. Upon detecting a UFP device, HD3SS3220
will keep ID pin high if VBUS is not at VSafe0V. Once VBUS is at VSafe0V,
the HD3SS3220 will assert ID pin low. This is done to enforce Type-C
requirement that VBUS must be at VSafe0V before re-enabling VBUS.
maxItems: 1
ports:
$ref: /schemas/graph.yaml#/properties/ports
description: OF graph bindings (specified in bindings/graph.txt) that model