Re: [PATCH] usb: typec: ptn36502: Only select DRM_AUX_BRIDGE with OF

["Luca Weiss" <luca.weiss@fairphone.com>]

On Thu Mar 28, 2024 at 5:03 PM CET, Nathan Chancellor wrote:
> CONFIG_DRM_AUX_BRIDGE depends on CONFIG_OF but that dependency is not
> included when CONFIG_TYPEC_MUX_PTN36502 selects it, resulting in a
> Kconfig warning when CONFIG_OF is disabled:
>
>   WARNING: unmet direct dependencies detected for DRM_AUX_BRIDGE
>     Depends on [n]: HAS_IOMEM [=y] && DRM_BRIDGE [=y] && OF [=n]
>     Selected by [m]:
>     - TYPEC_MUX_PTN36502 [=m] && USB_SUPPORT [=y] && TYPEC [=m] && I2C [=y] && (DRM [=y] || DRM [=y]=n) && DRM_BRIDGE [=y]
>
> Only select CONFIG_DRM_AUX_BRIDGE when CONFIG_DRM_BRIDGE and CONFIG_OF
> are enabled to clear up the warning. This results in no functional
> change because prior to the refactoring that introduces this warning,
> ptn36502_register_bridge() returned 0 when CONFIG_OF was disabled, which
> continues to occur with drm_aux_bridge_register() when
> CONFIG_DRM_AUX_BRIDGE is not enabled.

Oh, thanks! Seems I didn't see your patch for NB7VPQ904M so I made the
same mistake as there.

Reviewed-by: Luca Weiss <luca.weiss@fairphone.com>

>
> Fixes: 9dc28ea21eb4 ("usb: typec: ptn36502: switch to DRM_AUX_BRIDGE")
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
>  drivers/usb/typec/mux/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/typec/mux/Kconfig b/drivers/usb/typec/mux/Kconfig
> index 4827e86fed6d..ce7db6ad3057 100644
> --- a/drivers/usb/typec/mux/Kconfig
> +++ b/drivers/usb/typec/mux/Kconfig
> @@ -60,7 +60,7 @@ config TYPEC_MUX_PTN36502
>  	tristate "NXP PTN36502 Type-C redriver driver"
>  	depends on I2C
>  	depends on DRM || DRM=n
> -	select DRM_AUX_BRIDGE if DRM_BRIDGE
> +	select DRM_AUX_BRIDGE if DRM_BRIDGE && OF
>  	select REGMAP_I2C
>  	help
>  	  Say Y or M if your system has a NXP PTN36502 Type-C redriver chip
>
> ---
> base-commit: ef83531c8e4a5f2fc9c602be7e2a300de1575ee4
> change-id: 20240328-fix-ptn36502-drm_aux_bridge-select-83ddfd8a5375
>
> Best regards,