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Message-Id: <20250821-atcphy-6-17-v1-2-172beda182b8@kernel.org>
Date: Thu, 21 Aug 2025 15:38:54 +0000
From: Sven Peter <sven@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Felipe Balbi <balbi@...nel.org>,
Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>,
Neal Gompa <neal@...pa.dev>, Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, asahi@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, linux-phy@...ts.infradead.org,
Sven Peter <sven@...nel.org>
Subject: [PATCH RFC 02/22] dt-bindings: usb: Add Apple dwc3
Apple Silicon uses Synopsys DesignWare dwc3 based USB controllers for
their Type-C ports.
Signed-off-by: Sven Peter <sven@...nel.org>
---
.../devicetree/bindings/usb/apple,dwc3.yaml | 82 ++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 83 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/apple,dwc3.yaml b/Documentation/devicetree/bindings/usb/apple,dwc3.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..dfea726a6c053ad0c8f3d973a95b45bbf1724234
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/apple,dwc3.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/apple,dwc3.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple Silicon DWC3 USB controller
+
+maintainers:
+ - Sven Peter <sven@...npeter.dev>
+
+description:
+ Apple Silicon SoCs use a Synopsys DesignWare DWC3 based controller for each of
+ their Type-C ports.
+
+ The common content of the node is defined in snps,dwc3.yaml.
+
+allOf:
+ - $ref: snps,dwc3.yaml#
+
+select:
+ properties:
+ compatible:
+ contains:
+ const: apple,t8103-dwc3
+ required:
+ - compatible
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - apple,t6000-dwc3
+ - apple,t6020-dwc3
+ - apple,t8112-dwc3
+ - const: apple,t8103-dwc3
+ - const: snps,dwc3
+ - items:
+ - const: apple,t8103-dwc3
+ - const: snps,dwc3
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ iommus:
+ maxItems: 2
+
+ resets:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+unevaluatedProperties: false
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - iommus
+ - resets
+ - power-domains
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/apple-aic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ usb@...80000 {
+ compatible = "apple,t8103-dwc3", "snps,dwc3";
+ reg = <0x82280000 0x10000>;
+ interrupts = <AIC_IRQ 777 IRQ_TYPE_LEVEL_HIGH>;
+ iommus = <&dwc3_0_dart_0 0>, <&dwc3_0_dart_1 1>;
+
+ dr_mode = "otg";
+ usb-role-switch;
+ role-switch-default-mode = "host";
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index fe168477caa45799dfe07de2f54de6d6a1ce0615..0e085cb0762f765958d67be61ae0d3d773503431 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2399,6 +2399,7 @@ F: Documentation/devicetree/bindings/power/reset/apple,smc-reboot.yaml
F: Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml
F: Documentation/devicetree/bindings/spi/apple,spi.yaml
F: Documentation/devicetree/bindings/spmi/apple,spmi.yaml
+F: Documentation/devicetree/bindings/usb/apple,dwc3.yaml
F: Documentation/devicetree/bindings/watchdog/apple,wdt.yaml
F: arch/arm64/boot/dts/apple/
F: drivers/bluetooth/hci_bcm4377.c
--
2.34.1
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