linux-kernel - Re: [PATCH v7 2/2] phy: Add Google Tensor SoC USB PHY driver

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Message-ID: <1a53d473-fc13-4ac5-ba52-4701d95e3073@kernel.org>
Date: Sat, 22 Nov 2025 13:49:36 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Peter Griffin <peter.griffin@...aro.org>, Roy Luo <royluo@...gle.com>
Cc: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I
 <kishon@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, André Draszik
 <andre.draszik@...aro.org>, Tudor Ambarus <tudor.ambarus@...aro.org>,
 Philipp Zabel <p.zabel@...gutronix.de>,
 Badhri Jagan Sridharan <badhri@...gle.com>,
 Doug Anderson <dianders@...gle.com>, linux-phy@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
 Joy Chakraborty <joychakr@...gle.com>, Naveen Kumar <mnkumar@...gle.com>
Subject: Re: [PATCH v7 2/2] phy: Add Google Tensor SoC USB PHY driver

On 22/11/2025 13:48, Peter Griffin wrote:
> Hi Roy,
> 
> On Fri, 21 Nov 2025 at 08:56, Roy Luo <royluo@...gle.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@...gle.com>
>> Signed-off-by: Joy Chakraborty <joychakr@...gle.com>
>> Co-developed-by: Naveen Kumar <mnkumar@...gle.com>
>> Signed-off-by: Naveen Kumar <mnkumar@...gle.com>
>> Signed-off-by: Roy Luo <royluo@...gle.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