On 24/08/2023 09:23, Stanley Chang[昌育德] wrote: > Hi Krzysztof, > >>>>> + >>>>> +title: Realtek DHC RTD SoCs USB Type-C detection >>>> >>>> Type-c usually go to usb directory. >>> >>> This binding is not for a type-c controller. >>> It is an extcon device for type-c connector detection. >>> So I put it at extcon directory. >> >> If this is not a type-c controller, then what is it? Explain me please what is an >> "extcon device" without using any Linux subsystem naming. > > Sorry. "extcon device" may be the wrong name I'm using. > > As far as I know, type-c controller supports PD detection, role detection, role swap and cc configuration. > But in our SoC, type c module only supports role detection. > So I don't think it's a type-c controller. So module handling some parts of "Type-C" is not a "Type-C controller" but if such module handles a bit more, it becomes Type-C? > > I found a similar driver at > drivers/extcon/extcon-usbc-cros-ec.c > It belongs to External Connector, which can detect USB Type C cables. That's a driver, not a binding... > > So our driver is an external connector driver. Driver yes, not binding. > >>> >>> And I will add “connector” to the title. >>> title: Realtek DHC RTD SoCs USB Type-C Connector detection >> >> So usb... > > I refer to this binding, and it is in folder bindings/extcon. > docs/devicetree/bindings/extcon/extcon-usbc-cros-ec.yaml > Title: ChromeOS EC USB Type-C Cable and Accessory Detection So maybe it should be moved as well? extcon is a Linux framework. If you think extcon is a type of hardware, then please tell me what it is exactly. Please define it. And then I wonder why the name "extcon" is anyhow connected to Type-C USB. Best regards, Krzysztof