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Tue, 03 Nov 2026 23:42:18 -0800 (PST) Received: from 192.168.1.71 ([2402:a00:163:2ce9:c926:5826:36de:3b37]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1b245c1c290sm5318385c88.5.2026.11.03.23.42.13 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 03 Nov 2026 23:42:17 -0800 (PST) From: Ajit Singh To: linux-usb@vger.kernel.org Cc: devicetree@vger.kernel.org, romain.gantois@bootlin.com, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-kernel@vger.kernel.org, Ajit Singh Subject: [PATCH v1 1/2] dt-bindings: usb: ti,tusb1046: document HPD_IN override Date: Wed, 4 Nov 2026 13:12:01 +0530 Message-ID: <20261104074202.76712-2-blfizzyy@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20261104074202.76712-1-blfizzyy@gmail.com> References: <20261104074202.76712-1-blfizzyy@gmail.com> X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit For boards where HPD_IN is not asserted by hardware, the TUSB1046 can force it high over I2C using the HPDIN_OVERRIDE bit in the General register (0x0A). Document the optional ti,hpd-in-override property to force HPD_IN high when DisplayPort mode is selected. Signed-off-by: Ajit Singh --- Documentation/devicetree/bindings/usb/ti,tusb1046.yaml | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/ti,tusb1046.yaml b/Documentation/devicetree/bindings/usb/ti,tusb1046.yaml index e1501ea6b50b..58e9fde3ca71 100644 --- a/Documentation/devicetree/bindings/usb/ti,tusb1046.yaml +++ b/Documentation/devicetree/bindings/usb/ti,tusb1046.yaml @@ -20,6 +20,14 @@ properties: reg: maxItems: 1 + ti,hpd-in-override: + type: boolean + description: | + Force the HPD_IN signal high through the HPDIN_OVERRIDE bit in the + General register while DisplayPort Alt Mode is active. This is useful + on boards where HPD_IN is not driven by the downstream DisplayPort + sink. + required: - compatible - reg @@ -39,6 +47,7 @@ examples: mode-switch; orientation-switch; + ti,hpd-in-override; port { endpoint { -- 2.50.1 (Apple Git-155)