The Google Tensor USB PHY driver uses the Type-C switch framework to
handle orientation changes. However, the Kconfig did not specify a
dependency on the TYPEC framework, leading to undefined reference
errors when building for architectures or configurations where
CONFIG_TYPEC is configured as a module while CONFIG_PHY_GOOGLE_USB
is configured as built-in.

Add 'depends on TYPEC' to the PHY_GOOGLE_USB entry to ensure all
required symbols are available during linking, and 'COMPILE_TEST'
to expand test coverage.

Fixes: cbce66669c82 ("phy: Add Google Tensor SoC USB PHY driver")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202601210825.ELrpQeED-lkp@intel.com/
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Roy Luo <royluo@google.com>
---
Changes in v2:
- Add '(TYPEC=n && COMPILE_TEST)' to build dependency to expand test
  coverage as suggested by André Draszik <andre.draszik@linaro.org>
- Keep Peter's Reviewed-by tag because the change suggested by André
  is a trivial improvement.
- Link to v1: https://lore.kernel.org/r/20260121-next-v1-1-c18068b091b9@google.com
---
 drivers/phy/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 142e7b0ef2efb9209781800ee47b820a91b115ae..29953c911deda5fd3c43aef6da28d96954a22f8d 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -49,6 +49,7 @@ config GENERIC_PHY_MIPI_DPHY
 
 config PHY_GOOGLE_USB
 	tristate "Google Tensor SoC USB PHY driver"
+	depends on TYPEC || (TYPEC=n && COMPILE_TEST)
 	select GENERIC_PHY
 	help
 	  Enable support for the USB PHY on Google Tensor SoCs, starting with

---
base-commit: 8bb92fd7a04077925c8330f46a6ab44c80ca59f4
change-id: 20260121-next-b949189cacf4

Best regards,
-- 
Roy Luo <royluo@google.com>

On 28-01-26, 21:22, Roy Luo wrote:
> The Google Tensor USB PHY driver uses the Type-C switch framework to
> handle orientation changes. However, the Kconfig did not specify a
> dependency on the TYPEC framework, leading to undefined reference
> errors when building for architectures or configurations where
> CONFIG_TYPEC is configured as a module while CONFIG_PHY_GOOGLE_USB
> is configured as built-in.
> 
> Add 'depends on TYPEC' to the PHY_GOOGLE_USB entry to ensure all
> required symbols are available during linking, and 'COMPILE_TEST'
> to expand test coverage.

Thanks for the fix, looking at three patches for this, I like Arnd's fix
better and have applied that now

-- 
~Vinod

On Wed, 2026-01-28 at 21:22 +0000, Roy Luo wrote:
> The Google Tensor USB PHY driver uses the Type-C switch framework to
> handle orientation changes. However, the Kconfig did not specify a
> dependency on the TYPEC framework, leading to undefined reference
> errors when building for architectures or configurations where
> CONFIG_TYPEC is configured as a module while CONFIG_PHY_GOOGLE_USB
> is configured as built-in.
> 
> Add 'depends on TYPEC' to the PHY_GOOGLE_USB entry to ensure all
> required symbols are available during linking, and 'COMPILE_TEST'
> to expand test coverage.
> 
> Fixes: cbce66669c82 ("phy: Add Google Tensor SoC USB PHY driver")
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202601210825.ELrpQeED-lkp@intel.com/
> Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
> Signed-off-by: Roy Luo <royluo@google.com>
> ---
> Changes in v2:
> - Add '(TYPEC=n && COMPILE_TEST)' to build dependency to expand test
>   coverage as suggested by André Draszik <andre.draszik@linaro.org>
> - Keep Peter's Reviewed-by tag because the change suggested by André
>   is a trivial improvement.
> - Link to v1: https://lore.kernel.org/r/20260121-next-v1-1-c18068b091b9@google.com
> ---
>  drivers/phy/Kconfig | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: André Draszik <andre.draszik@linaro.org>