Hi, sorry for the late response... On 25-01-10, Junzhong Pan wrote: > Hi Marco, > > Thank you for your reply! > > On 2025/1/6 14:52, Marco Felsch Wrote: > > On 24-12-31, Junzhong Pan wrote: > > > > > > I recently encountered some kind of platforms using an existing onboard > > > hub yet their HW don't utilize the USBPE port power control feature > > > while the hub support it. > > > Instead, we have another GPIO for controlling the vbus of those ports > > > to cut the cost. > > > > That's exactly our use-case too. > > > > > Wonder any idea could use this driver considering the limitation of > > > the usb compatible set the properties of onboard_dev_pdata hard coded? > > > > Sorry but I don't get this. > If the hub have 4 ports, but board only have one gpio to controll all those > vbus at once, implemented as some kind of gang mode. > > In this case, the onboard_dev driver may not respond to the > USB_PORT_FEAT_POWER, but keep the supply always on except for the suspend > states. > > Do you have any idea how we handle this? I can think of one crude workaround. Adding 4-regulators which use the same shared gpio. This requires the gpio to be requested as shared if that is possible. Regards, Marco
