[PATCH v7 2/2] phy: Add Google Tensor SoC USB PHY driver

[Roy Luo]

On Sat, Nov 22, 2025 at 4:49 AM Krzysztof Kozlowski <krzk at kernel.org> wrote:
>
> On 22/11/2025 13:48, Peter Griffin wrote:
> > Hi Roy,
> >
> > On Fri, 21 Nov 2025 at 08:56, Roy Luo <royluo at google.com> wrote:
> >>
> >> Support the USB PHY found on Google Tensor G5 (Laguna). This
> >> particular USB PHY supports both high-speed and super-speed
> >> operations, and is integrated with the SNPS DWC3 controller that's
> >> also on the SoC. This initial patch specifically adds functionality
> >> for high-speed.
> >>
> >> Co-developed-by: Joy Chakraborty <joychakr at google.com>
> >> Signed-off-by: Joy Chakraborty <joychakr at google.com>
> >> Co-developed-by: Naveen Kumar <mnkumar at google.com>
> >> Signed-off-by: Naveen Kumar <mnkumar at google.com>
> >> Signed-off-by: Roy Luo <royluo at google.com>
> >> ---
> >>  drivers/phy/Kconfig          |  13 ++
> >>  drivers/phy/Makefile         |   1 +
> >>  drivers/phy/phy-google-usb.c | 292 +++++++++++++++++++++++++++++++++++++++++++
> >
> > Please add this new file to Tensor SoC MAINTAINERS entry so it's
> > easier to review future patches.
> >
> >>  3 files changed, 306 insertions(+)
> >>
> >> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> >> index 678dd0452f0aa0597773433f04d2a9ba77474d2a..af14ec74542a9879c856dee8236753990fdf3705 100644
> >> --- a/drivers/phy/Kconfig
> >> +++ b/drivers/phy/Kconfig
> >> @@ -101,6 +101,19 @@ config PHY_NXP_PTN3222
> >>           schemes. It supports all three USB 2.0 data rates: Low Speed, Full
> >>           Speed and High Speed.
> >>
> >> +config PHY_GOOGLE_USB
> >> +       tristate "Google Tensor SoC USB PHY driver"
> >> +       depends on HAS_IOMEM
> >> +       depends on OF
> >> +       depends on TYPEC
> >
> > Add COMPILE_TEST for build testing.
>
> ... and this probably should depend on your ARCH_xxx || COMPILE_TEST
>
> Same for USB DWC driver.
>
>
> Best regards,
> Krzysztof

Peter and Krzysztof,

Thanks for the review and ack to all the comments.
Sending out a new version.

Thanks,
Roy Luo