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Subject[PATCH v5 1/4] dt-bindings: usb: Add binding for discrete onboard USB hubs
Date
Discrete onboard USB hubs (an example for such a hub is the Realtek
RTS5411) need to be powered and may require initialization of other
resources (like GPIOs or clocks) to work properly. This adds a device
tree binding for these hubs.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
---

Changes in v5:
- updated 'title'
- only use standard USB compatible strings
- deleted 'usb_hub' node
- renamed 'usb_controller' node to 'usb-controller'
- removed labels from USB nodes
- added 'vdd-supply' to USB nodes

Changes in v4:
- none

Changes in v3:
- updated commit message
- removed recursive reference to $self
- adjusted 'compatible' definition to support multiple entries
- changed USB controller phandle to be a node

Changes in v2:
- removed 'wakeup-source' and 'power-off-in-suspend' properties
- consistently use spaces for indentation in example

.../bindings/usb/onboard_usb_hub.yaml | 49 +++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/onboard_usb_hub.yaml

diff --git a/Documentation/devicetree/bindings/usb/onboard_usb_hub.yaml b/Documentation/devicetree/bindings/usb/onboard_usb_hub.yaml
new file mode 100644
index 000000000000..bf4ec52e6c7b
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/onboard_usb_hub.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/onboard_usb_hub.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Binding for discrete onboard USB hubs
+
+maintainers:
+ - Matthias Kaehlcke <mka@chromium.org>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - usbbda,5411
+ - usbbda,411
+
+ vdd-supply:
+ description:
+ phandle to the regulator that provides power to the hub.
+
+required:
+ - compatible
+ - vdd-supply
+
+examples:
+ - |
+ usb-controller {
+ dr_mode = "host";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* 2.0 hub on port 1 */
+ hub_2_0: hub@1 {
+ compatible = "usbbda,5411";
+ reg = <1>;
+ vdd-supply = <&pp3300_hub>;
+ };
+
+ /* 3.0 hub on port 2 */
+ hub_3_0: hub@2 {
+ compatible = "usbbda,411";
+ reg = <2>;
+ vdd-supply = <&pp3300_hub>;
+ };
+ };
+
+...
--
2.30.0.478.g8a0d178c01-goog
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