RE: [PATCH v1] usb: phy: add usb phy notify port status API

[Stanley Chang[昌育德]]

> 
> On Fri, Apr 21, 2023 at 04:03:31PM +0800, Stanley Chang wrote:
> > In Realtek SoC, the parameter of usb phy is designed to can dynamic
> > tuning base on port status. Therefore, add a notify callback of phy
> > driver when usb port status change.
> >
> > Signed-off-by: Stanley Chang <stanley_chang@xxxxxxxxxxx>
> > ---
> >  drivers/usb/core/hub.c  | 13 +++++++++++++  include/linux/usb/phy.h |
> > 14 ++++++++++++++
> >  2 files changed, 27 insertions(+)
> 
> We can not add callbacks in the kernel that are not actually used, otherwise
> they will just be instantly removed.
> 
> Please submit any drivers that need this change at the same time so that we
> can verify that the callback is actually correct and needed, otherwise we can
> not take this change.
> 

In this stage, we usb phy driver is not at linux upstream. 
For the android GKI, we have to add this callback to upstream or use the vendor hook of android.
I will plan to upstream the realtek usb phy driver.

Thanks,
Stanley