From: Svyatoslav Ryhel <clamor95@gmail.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Thierry Reding <thierry.reding@kernel.org>,
Jonathan Hunter <jonathanh@nvidia.com>,
Peter Chen <peter.chen@kernel.org>,
Svyatoslav Ryhel <clamor95@gmail.com>,
Xu Yang <xu.yang_2@nxp.com>, Peng Fan <peng.fan@nxp.com>
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 [thread overview]
Message-ID: <20260523083013.46372-3-clamor95@gmail.com> (raw)
In-Reply-To: <20260523083013.46372-1-clamor95@gmail.com>
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 <clamor95@gmail.com>
---
.../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
next prev parent reply other threads:[~2026-05-23 8:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-23 8:30 [PATCH v2 0/4] usb: chipidea: tegra: Add external control option Svyatoslav Ryhel
2026-05-23 8:30 ` [PATCH v2 1/4] dt-bindings: usb: Move Tegra-specific Chipidea USB properties into a dedicated schema Svyatoslav Ryhel
2026-05-23 8:30 ` Svyatoslav Ryhel [this message]
2026-05-23 8:30 ` [PATCH v2 3/4] usb: chipidea: tegra: Avoid controller/PHY init if bus is externally controlled Svyatoslav Ryhel
2026-05-25 14:43 ` Svyatoslav Ryhel
2026-05-28 7:23 ` Peter Chen (CIX)
2026-05-28 11:12 ` Svyatoslav Ryhel
2026-05-23 8:30 ` [PATCH v2 4/4] usb: chipidea: tegra: Expose tegra_usb structure Svyatoslav Ryhel
2026-05-29 14:57 ` [PATCH v2 0/4] usb: chipidea: tegra: Add external control option Svyatoslav Ryhel
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