On 6.02.2025 12:30 AM, Stephen Boyd wrote: > Describe the set of pins used to connect the detachable keyboard on > detachable ChromeOS devices. The set of pins is called the "pogo pins". > It's basically USB 2.0 with an extra pin for base detection. We expect > to find a keyboard on the other side of this connector with a specific > vid/pid, so describe that as a child device at the port of the usb > device connected upstream. > > Cc: Rob Herring <robh@xxxxxxxxxx> > Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx> > Cc: Conor Dooley <conor+dt@xxxxxxxxxx> > Cc: Benson Leung <bleung@xxxxxxxxxxxx> > Cc: <devicetree@xxxxxxxxxxxxxxx> > Cc: <chrome-platform@xxxxxxxxxxxxxxx> > Cc: Pin-yen Lin <treapking@xxxxxxxxxxxx> > Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx> > --- > .../chrome/google,pogo-pin-connector.yaml | 68 +++++++++++++++++++ > 1 file changed, 68 insertions(+) > create mode 100644 Documentation/devicetree/bindings/chrome/google,pogo-pin-connector.yaml > > diff --git a/Documentation/devicetree/bindings/chrome/google,pogo-pin-connector.yaml b/Documentation/devicetree/bindings/chrome/google,pogo-pin-connector.yaml > new file mode 100644 > index 000000000000..622e171b6b08 > --- /dev/null > +++ b/Documentation/devicetree/bindings/chrome/google,pogo-pin-connector.yaml > @@ -0,0 +1,68 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/chrome/google,pogo-pin-connector.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Google Pogo Pin Connector This looks like a very generic piece of hw.. many boards (esp. convertibles) do the same thing, with 4 or 5 pins on the bottom of the device. But of course hw manufacturers being hw manufacturers, many different kinds of signals go through such connectors - if it's not USB then it's perhaps I2C or some variation thereof IMO, we could perhaps add this to usb-connector.yaml as "usb-custom-connector" or so Konrad
