On Thu, Oct 29, 2020 at 11:49 AM Amelie DELAUNAY <amelie.delaunay@xxxxxx> wrote: > > > > On 10/29/20 4:40 PM, Rob Herring wrote: > > On Thu, Oct 29, 2020 at 10:58:03AM +0100, Amelie Delaunay wrote: > >> Power operation mode may depends on hardware design, so, add the optional > >> property power-opmode for usb-c connector to select the power operation > >> mode capability. > >> > >> Signed-off-by: Amelie Delaunay <amelie.delaunay@xxxxxx> > >> --- > >> .../bindings/connector/usb-connector.yaml | 18 ++++++++++++++++++ > >> 1 file changed, 18 insertions(+) > >> > >> diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml > >> index 728f82db073d..200d19c60fd5 100644 > >> --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml > >> +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml > >> @@ -93,6 +93,24 @@ properties: > >> - device > >> - dual > >> > >> + power-opmode: > > > > I've acked this version: > > > > https://lore.kernel.org/r/20201020093627.256885-2-badhri@xxxxxxxxxx > > > > frs is used for Fast Role Swap defined in USB PD spec. > I understand it allows to get the same information but I'm wondering why > the property name is limited to -frs- in this case. What about a > non-power delivery USB-C connector ? I've got no idea. The folks that know USB-C and PD details need to get together and work all this out. To me, it looks like the same thing... And it's not just this, but the stream of USB-C additions that trickle in. > Moreover, power-opmode property support is already merged in typec class: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/usb/typec/class.c?h=v5.10-rc1&id=12f3467b0d28369d3add7a0deb65fdac9b503c90 > and stusb160x driver uses it :( > > So, do I need to modify stusb160x driver (and bindings) to take into > account this USB PD specific property? If not documented, then it's not an ABI, so yes. Rob
