Re: [PATCH v4 0/5] Add onboard-dev USB hub host managed vbus handling support

Ze Huang
2026-02-10T06:23:16Z

On Fri Sep 12, 2025 at 4:22 AM CST, Marco Felsch wrote:
> Hi,
>
> the whole purpose of this series is to make it possible to control the
> USB VBUS regulators of an USB hub via host managed regulators.
>
> Regards,
> Marco
>
> ---
> Changes in v4:
> - dt-bindings: change to vbus-supply and shift doc to usb-device.yaml
> - onboard_dev: make use of new regulator API to parse child device
> regulators.
> - onboard_dev: drop hard coded downstream port number and make it more
> dynamic
> - onboard_dev: drop limiting support to SMSC hubs
> - Link to v3: https://lore.kernel.org/r/20250821-v6-16-topic-usb-onboard-dev-v3-0-6d2b38a5d818@pengutronix.de
>
> Changes in v3:
> - fix dt-bindings issues
> - Link to v2: https://lore.kernel.org/all/20250327172803.3404615-1-m.felsch@pengutronix.de/
>
> Changes in v2:
> - fix compile time errors in case the module builds
> - Link to v1: https://lore.kernel.org/all/20240807-b4-v6-10-topic-usb-onboard-dev-v1-0-f33ce21353c9@pengutronix.de/
>
> ---
> Marco Felsch (5):
> usb: port: track the disabled state
> usb: hub: add infrastructure to pass onboard_dev port features
> dt-bindings: usb: usb-device: add usb hub port vbus-supply suppport
> dt-bindings: usb: microchip,usb2514: add vbus-supply example
> usb: misc: onboard_dev: add hub downstream port host vbus-supply handling
>
> .../devicetree/bindings/usb/microchip,usb2514.yaml | 7 ++
> .../devicetree/bindings/usb/usb-device.yaml | 6 ++
> drivers/usb/core/hub.c | 55 +++++++++-
> drivers/usb/core/hub.h | 4 +
> drivers/usb/core/port.c | 6 ++
> drivers/usb/misc/onboard_usb_dev.c | 117 +++++++++++++++++++++
> include/linux/usb.h | 3 +
> 7 files changed, 196 insertions(+), 2 deletions(-)
> ---
> base-commit: 038d61fd642278bab63ee8ef722c50d10ab01e8f
> change-id: 20250821-v6-16-topic-usb-onboard-dev-b8d4d1d8a086
>
> Best regards,

Hi Marco,

I'm checking in to ask about the status of this patch series.

We are currently working on the Spacemit K1 SoC and we have a use case
that requires onboard_dev to manage the USB VBUS regulator. This series
would be very helpful for us :)

Link: https://lore.kernel.org/all/DG8QBWSJ79MP.2MVIHFRBX3WXX@linux.dev/

Best regards,
Ze Huang