| Message ID | 20241031235957.1261244-2-amitsd@google.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add new time property for battery charger type detection | expand |
On Thu, Oct 31, 2024 at 04:59:52PM -0700, Amit Sunil Dhamne wrote: > This commit adds a new time property for Battery charger (BC1.2) type > detection completion process (based on BCv1.2 detection spec) when > typec port connects in a potential sink role. BC1.2 detection is used > by some Type C port controllers implementations (such as > "maxim,max33359") to detect the type of charger port. > > Signed-off-by: Amit Sunil Dhamne <amitsd@google.com> > --- > .../devicetree/bindings/connector/usb-connector.yaml | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml > index 21a0c58c65cd..67700440e23b 100644 > --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml > +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml > @@ -283,6 +283,16 @@ properties: > maximum: 200 > default: 200 > > + sink-bc12-completion-time-ms: > + description: Represents the max time in ms that a port in sink role takes > + to complete Battery Charger (BC1.2) Detection. BC1.2 detection is a > + hardware mechanism, which in some TCPC implementations, can run in > + parallel once the Type-C connection state machine reaches the "potential > + connect as sink" state. In TCPCs where this causes delays to respond to > + the incoming PD messages, sink-bc12-completion-time-ms is used to delay > + PD negotiation till BC1.2 detection completes. > + default: 0 Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml index 21a0c58c65cd..67700440e23b 100644 --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml @@ -283,6 +283,16 @@ properties: maximum: 200 default: 200 + sink-bc12-completion-time-ms: + description: Represents the max time in ms that a port in sink role takes + to complete Battery Charger (BC1.2) Detection. BC1.2 detection is a + hardware mechanism, which in some TCPC implementations, can run in + parallel once the Type-C connection state machine reaches the "potential + connect as sink" state. In TCPCs where this causes delays to respond to + the incoming PD messages, sink-bc12-completion-time-ms is used to delay + PD negotiation till BC1.2 detection completes. + default: 0 + dependencies: sink-vdos-v1: [ sink-vdos ] sink-vdos: [ sink-vdos-v1 ] @@ -426,6 +436,7 @@ examples: sink-wait-cap-time-ms = <465>; ps-source-off-time-ms = <835>; cc-debounce-time-ms = <101>; + sink-bc12-completion-time-ms = <500>; }; };
This commit adds a new time property for Battery charger (BC1.2) type detection completion process (based on BCv1.2 detection spec) when typec port connects in a potential sink role. BC1.2 detection is used by some Type C port controllers implementations (such as "maxim,max33359") to detect the type of charger port. Signed-off-by: Amit Sunil Dhamne <amitsd@google.com> --- .../devicetree/bindings/connector/usb-connector.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+)