Re: [PATCH v5 6/9] dt/bindings: drm/bridge: it6505: Add mode-switch support

[Stephen Boyd]

Quoting Prashant Malani (2022-06-22 10:34:35)
> From: Pin-Yen Lin <treapking@xxxxxxxxxxxx>
>
> ITE IT6505 can be used in systems to switch USB Type-C DisplayPort
> alternate mode lane traffic between 2 Type-C ports.

How does it work? From what I can tell from the information I find when
googling this part[1] and looking at the existing binding doc is that
this device is a DPI to DP bridge, and it outputs DP (probably 4 lanes
of it?). Does the 2 type-c port design work by transmitting DP on two
lanes of DP for one type-c port and another two lanes of DP for the
other type-c port?

DP could be one lane, so if this device is able to output one lane on
any output differential pair then I suspect it could support 4 type-c
ports if the hardware engineer connected it that way. Can you confirm my
suspicion?

[1] https://www.ite.com.tw/en/product/view?mid=45