@@ -142,6 +142,32 @@ properties:
required:
- port@0
+ new-source-frs-typec-current:
+ description: Initial current capability of the new source when vSafe5V
+ is applied during PD3.0 Fast Role Swap. "Table 6-14 Fixed Supply PDO - Sink"
+ of "USB Power Delivery Specification Revision 3.0, Version 1.2" provides the
+ different power levels and "6.4.1.3.1.6 Fast Role Swap USB Type-C Current"
+ provides a detailed description of the field. The sink PDO from current source
+ reflects the current source's(i.e. transmitter of the FRS signal) power
+ requirement during fr swap. The current sink (i.e. receiver of the FRS signal),
+ a.k.a new source, should check if it will be able to satisfy the current source's,
+ new sink's, requirement during frswap before enabling the frs signal reception.
+ This property refers to maximum current capability that the current sink can
+ satisfy. During FRS, VBUS voltage is at 5V, as the partners are in implicit
+ contract, hence, the power level is only a function of the current capability.
+ "not-supported" implies sink to source fast role swap not supported.
+ "default" refers to default USB power level as described by
+ "Table 6-14 Fixed Supply PDO - Sink".
+ "1.5A" refers to 1.5A@5V.
+ "3.0A" refers to 3.0A@5V.
+
+ $ref: /schemas/types.yaml#/definitions/string
+ enum:
+ - not-supported
+ - default
+ - 1.5A
+ - 3.0A
+
required:
- compatible
This change adds frs-typec-current which allows setting the initial current capability of the new source when vSafe5V is applied during PD3.0 sink Fast Role Swap. Signed-off-by: Badhri Jagan Sridharan <badhri@google.com> --- Changes since v1: - Changing patch version to v6 to fix version number confusion. Changes since v6: - Removed the redundant usb-connector.txt that I created by mistake. - Moved to yaml. Changes since v7: - Rebase Changes since v8: - Redefine new-source-frs-typec-current as string enums to address Rob Herring's comment. Changes since v9: - Removed FRS constants from usb bindings. --- .../bindings/connector/usb-connector.yaml | 26 +++++++++++++++++++ 1 file changed, 26 insertions(+)