On Mon, Mar 05, 2018 at 09:18:10AM +0100, Andrzej Hajda wrote:

On 02.03.2018 14:13, Heikki Krogerus wrote:

quoted

Hi,

On Tue, Feb 27, 2018 at 08:11:29AM +0100, Andrzej Hajda wrote:

quoted

+2. USB-C connector attached to CC controller (s2mm005), HS lines routed
+to companion PMIC (max77865), SS lines to USB3 PHY and SBU to DisplayPort.
+DisplayPort video lines are routed to the connector via SS mux in USB3 PHY.
+
+ccic: s2mm005 at 33 {
+	...
+	usb_con: connector {
+		compatible = "usb-c-connector";
+		label = "USB-C";

Is this child node really necessary? There will never be more then
one connector per CC line.

But there can be more connectors/cc-lines per IC, for example EZ-PD CCG5[1].

OK, in that case the child node is of course needed.

[1]:
http://www.cypress.com/products/ez-pd-ccg5-two-port-usb-type-c-and-power-delivery

quoted

We should prefer device_graph* functions over of_graph* and

I guess you mean fwnode_graph* functions.

Yes.

quoted

acpi_graph* functions in the drivers so we don't have to handle the
same thing multiple times with separate APIs. Is it still possible if
there is that connector child node?

Bindings proposed here are OF bindings, I suppose the most important is
to follow OF specification and guidelines and these bindings tries to
follow it.
It looks like it should not be a problem for fwnode framework to handle
such bindings, but it is just my guess. I have not seen any fwnode*
specification I am not sure what is the real purpose of this framework,
but it seems to be just in-kernel abstraction for different firmware
standards (OF, ACPI), so even if it lacks at the moment some
functionality it should not be a barrier for OF bindings.

Sure thing.


Thanks,

-- 
heikki