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Sat, 23 May 2026 01:51:20 -0700 (PDT) From: Svyatoslav Ryhel To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thierry Reding , Jonathan Hunter , Bartosz Golaszewski , Svyatoslav Ryhel Cc: devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v2 1/2] dt-bindings: soc: tegra: Document Nvidia Tegra modem pwrseq Date: Sat, 23 May 2026 11:51:01 +0300 Message-ID: <20260523085102.51000-2-clamor95@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260523085102.51000-1-clamor95@gmail.com> References: <20260523085102.51000-1-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 Tegra modem pwseq used by various devices based on the Nvidia Tegra SoC, describing its usage. The power sequence provides interaction between the modem and SoC-specific interface configurations. Signed-off-by: Svyatoslav Ryhel --- .../soc/tegra/nvidia,tegra-modem-pwrseq.yaml | 49 +++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/tegra/nvidia,tegra-modem-pwrseq.yaml diff --git a/Documentation/devicetree/bindings/soc/tegra/nvidia,tegra-modem-pwrseq.yaml b/Documentation/devicetree/bindings/soc/tegra/nvidia,tegra-modem-pwrseq.yaml new file mode 100644 index 000000000000..3770fd6dc2cf --- /dev/null +++ b/Documentation/devicetree/bindings/soc/tegra/nvidia,tegra-modem-pwrseq.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/tegra/nvidia,tegra-modem-pwrseq.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nvidia Tegra modem power sequence + +description: + A configuration sequence used in Tegra SoCs to provide proper interaction + between the application processor and the modem, as well as control over + one of the SoC's USB lines for the modem. + +maintainers: + - Svyatoslav Ryhel + +properties: + compatible: + const: nvidia,tegra-modem-pwrseq + + enable-gpios: + description: GPIO connected to the modem EINT1 pin + maxItems: 1 + + nvidia,usb-bus: + description: + Contains phandle pointing to the Host's USB controller + $ref: /schemas/types.yaml#/definitions/phandle + + power-supply: true + +required: + - compatible + - nvidia,usb-bus + +additionalProperties: false + +examples: + - | + #include + + pwrseq-modem { + compatible = "nvidia,tegra-modem-pwrseq"; + + enable-gpios = <&gpio 165 GPIO_ACTIVE_HIGH>; + power-supply = <&vdd_3v3_vbat>; + + nvidia,usb-bus = <&usb2>; + }; -- 2.51.0