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Sat, 23 May 2026 01:30:38 -0700 (PDT) From: Svyatoslav Ryhel To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thierry Reding , Jonathan Hunter , Peter Chen , Svyatoslav Ryhel , Xu Yang , Peng Fan Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/4] dt-bindings: usb: chipidea,usb2-tegra: Document nvidia,external-control property Date: Sat, 23 May 2026 11:30:10 +0300 Message-ID: <20260523083013.46372-3-clamor95@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260523083013.46372-1-clamor95@gmail.com> References: <20260523083013.46372-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document the nvidia,external-control property required, for example, for USB lines in HSIC mode connected to a modem, where the modem requires precise control over the USB bus to properly enumerate all its stages and intermediate devices. Signed-off-by: Svyatoslav Ryhel --- .../devicetree/bindings/usb/chipidea,usb2-tegra.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml b/Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml index 78046f8a63ad..d99a18900b5a 100644 --- a/Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml +++ b/Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml @@ -40,6 +40,13 @@ properties: type: boolean deprecated: true + nvidia,external-control: + description: + Indicates that the controller is configured externally and that the host + should not attempt to access it. This is usually used by a modem that + requires precise bus configuration. + type: boolean + required: - compatible - reg -- 2.51.0