linux-kernel - [PATCH v2 0/2] Implement vbus support for HD3SS3220 port controller

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Message-Id: <20251008175750.1770454-1-krishna.kurapati@oss.qualcomm.com>
Date: Wed,  8 Oct 2025 23:27:48 +0530
From: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
        Biju Das <biju.das.jz@...renesas.com>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Krishna Kurapati <krishna.kurapati@....qualcomm.com>
Subject: [PATCH v2 0/2] Implement vbus support for HD3SS3220 port controller

As per the data sheet of HD3SS3220:

"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"

This series implements support to read ID pin state and accordingly enable
VBUS.

Changes in v2:
Fixed inclusion of header files appropriately.
Modified commit text for driver patch.

Link to v1:
https://lore.kernel.org/all/20251002172539.586538-1-krishna.kurapati@oss.qualcomm.com/

Krishna Kurapati (2):
  dt-bindings: usb: ti,hd3ss3220: Add support for VBUS based on ID state
  usb: typec: hd3ss3220: Enable VBUS based on ID pin state

 .../devicetree/bindings/usb/ti,hd3ss3220.yaml | 13 ++++
 drivers/usb/typec/hd3ss3220.c                 | 60 +++++++++++++++++++
 2 files changed, 73 insertions(+)

-- 
2.34.1