Commit d53bdaae authored by Krishna Kurapati's avatar Krishna Kurapati Committed by Greg Kroah-Hartman
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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: default avatarRob Herring (Arm) <robh@kernel.org>
Signed-off-by: default avatarKrishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Link: https://patch.msgid.link/20251111072025.2199142-2-krishna.kurapati@oss.qualcomm.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1052864d

Documentation/devicetree/bindings/usb/ti,hd3ss3220.yaml

+8 −0
Original line number Diff line number Diff line
@@ -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