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d53bdaae89
Update the bindings to support reading ID state and VBUS, as per the HD3SS3220 data sheet. The ID pin is kept high if VBUS is not at VSafe0V and asserted low once VBUS is at VSafe0V, enforcing the Type-C requirement that VBUS must be at VSafe0V before re-enabling VBUS. Add id-gpios property to describe the input gpio for USB ID pin. Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com> Link: https://patch.msgid.link/20251111072025.2199142-2-krishna.kurapati@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
90 lines
2.4 KiB
YAML
90 lines
2.4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/usb/ti,hd3ss3220.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: TI HD3SS3220 TypeC DRP Port Controller
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maintainers:
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- Biju Das <biju.das.jz@bp.renesas.com>
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description: |-
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HD3SS3220 is a USB SuperSpeed (SS) 2:1 mux with DRP port controller. The device provides Channel
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Configuration (CC) logic and 5V VCONN sourcing for ecosystems implementing USB Type-C. The
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HD3SS3220 can be configured as a Downstream Facing Port (DFP), Upstream Facing Port (UFP) or a
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Dual Role Port (DRP) making it ideal for any application.
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properties:
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compatible:
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const: ti,hd3ss3220
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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id-gpios:
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description:
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An input gpio for USB ID pin. Upon detecting a UFP device, HD3SS3220
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will keep ID pin high if VBUS is not at VSafe0V. Once VBUS is at VSafe0V,
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the HD3SS3220 will assert ID pin low. This is done to enforce Type-C
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requirement that VBUS must be at VSafe0V before re-enabling VBUS.
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maxItems: 1
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ports:
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$ref: /schemas/graph.yaml#/properties/ports
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description: OF graph bindings (specified in bindings/graph.txt) that model
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SS data bus to the SS capable connector.
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properties:
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port@0:
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$ref: /schemas/graph.yaml#/properties/port
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description: Super Speed (SS) MUX inputs connected to SS capable connector.
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port@1:
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$ref: /schemas/graph.yaml#/properties/port
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description: Output of 2:1 MUX connected to Super Speed (SS) data bus.
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required:
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- port@0
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- port@1
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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hd3ss3220@47 {
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compatible = "ti,hd3ss3220";
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reg = <0x47>;
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interrupt-parent = <&gpio6>;
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interrupts = <3>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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hd3ss3220_in_ep: endpoint {
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remote-endpoint = <&ss_ep>;
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};
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};
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port@1 {
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reg = <1>;
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hd3ss3220_out_ep: endpoint {
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remote-endpoint = <&usb3_role_switch>;
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};
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};
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};
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};
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};
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