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Sat, 23 May 2026 01:30:34 -0700 (PDT) Received: from xeon ([188.163.112.61]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-688bb62b6dfsm1651856a12.30.2026.05.23.01.30.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 May 2026 01:30:33 -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 0/4] usb: chipidea: tegra: Add external control option Date: Sat, 23 May 2026 11:30:08 +0300 Message-ID: <20260523083013.46372-1-clamor95@gmail.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Patchset adjusts the Tegra-specific portion of the Chipidea USB controller to allow for the disabling of automatic PHY and USB controller registration. This is achieved by adding the nvidia,external-control property/flag. It does not affect any existing configurations, but it allows the USB line to be registered or deregistered by an external device — in this case, the modem. Since Tegra USB PHY holds clock gating for controller PHY cannot be handled by code Chipidea mechanism. This patchset is a part of larger series aiming to bring XMM6260 modem support for Tegra devices: https://lore.kernel.org/lkml/20260511135703.62470-1-clamor95@gmail.com/ --- Changes in v2: - separated Tegra USB into its own schema - tegra_usb structure moved into tegra_usb_phy.h --- Svyatoslav Ryhel (4): dt-bindings: usb: Move Tegra-specific Chipidea USB properties into a dedicated schema dt-bindings: usb: chipidea,usb2-tegra: Document nvidia,external-control property usb: chipidea: tegra: Avoid controller/PHY init if bus is externally controlled usb: chipidea: tegra: Expose tegra_usb structure .../bindings/usb/chipidea,usb2-tegra.yaml | 95 +++++++++++++++++++ .../devicetree/bindings/usb/ci-hdrc-usb2.yaml | 22 ----- drivers/usb/chipidea/ci_hdrc_tegra.c | 43 ++++----- include/linux/usb/tegra_usb_phy.h | 15 +++ 4 files changed, 131 insertions(+), 44 deletions(-) create mode 100644 Documentation/devicetree/bindings/usb/chipidea,usb2-tegra.yaml -- 2.51.0