| Message ID | 20201020093627.256885-2-badhri@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | *** TCPM support for FRS and AutoDischarge Disconnect *** | expand |
On Tue, 20 Oct 2020 02:36:18 -0700, Badhri Jagan Sridharan wrote: > 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. > > Changes since v10: > - Suggestions from Rob Herring: > - Going back to u32 for new-source-frs-typec-current > - Removed the definition for "not-supported" > - Bringing back FRS constants for usb pd binding. > --- > .../bindings/connector/usb-connector.yaml | 19 +++++++++++++++++++ > include/dt-bindings/usb/pd.h | 8 ++++++++ > 2 files changed, 27 insertions(+) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml index 728f82db073d..62781518aefc 100644 --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml @@ -147,6 +147,25 @@ 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. + "1" refers to default USB power level as described by "Table 6-14 Fixed Supply PDO - Sink". + "2" refers to 1.5A@5V. + "3" refers to 3.0A@5V. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [1, 2, 3] + required: - compatible diff --git a/include/dt-bindings/usb/pd.h b/include/dt-bindings/usb/pd.h index 985f2bbd4d24..0352893697f0 100644 --- a/include/dt-bindings/usb/pd.h +++ b/include/dt-bindings/usb/pd.h @@ -85,4 +85,12 @@ PDO_PPS_APDO_MIN_VOLT(min_mv) | PDO_PPS_APDO_MAX_VOLT(max_mv) | \ PDO_PPS_APDO_MAX_CURR(max_ma)) + /* + * Based on "Table 6-14 Fixed Supply PDO - Sink" of "USB Power Delivery Specification Revision 3.0, + * Version 1.2" + * Initial current capability of the new source when vSafe5V is applied. + */ +#define FRS_DEFAULT_POWER 1 +#define FRS_5V_1P5A 2 +#define FRS_5V_3A 3 #endif /* __DT_POWER_DELIVERY_H */
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. Changes since v10: - Suggestions from Rob Herring: - Going back to u32 for new-source-frs-typec-current - Removed the definition for "not-supported" - Bringing back FRS constants for usb pd binding. --- .../bindings/connector/usb-connector.yaml | 19 +++++++++++++++++++ include/dt-bindings/usb/pd.h | 8 ++++++++ 2 files changed, 27 insertions(+)