From ca0584c40a6648ae2c7f2ef50446af2f7bdf82db Mon Sep 17 00:00:00 2001 From: Badhri Jagan Sridharan Date: Wed, 14 Apr 2021 07:26:56 -0700 Subject: [PATCH] dt-bindings: connector: Add slow-charger-loop definition Allows PMIC charger loops which are slow(i.e. cannot meet the 15ms deadline) to still comply to pSnkStby i.e Maximum power that can be consumed by sink while in Sink Standby state as defined in 7.4.2 Sink Electrical Parameters of USB Power Delivery Specification Revision 3.0, Version 1.2. This patch introduces slow-charger-loop which when set makes the port request PD_P_SNK_STDBY_MW(2.5W i.e 500mA@5V) upon entering SNK_DISCOVERY (instead of 3A or the 1.5A during SNK_DISCOVERY) and the actual currrent limit after RX of PD_CTRL_PSRDY for PD link or during SNK_READY for non-pd link. Acked-by: Rob Herring Signed-off-by: Badhri Jagan Sridharan Link: https://lore.kernel.org/r/20210414142656.63749-3-badhri@google.com Signed-off-by: Greg Kroah-Hartman --- Documentation/devicetree/bindings/connector/usb-connector.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml index b6daedd..32509b9 100644 --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml @@ -197,6 +197,16 @@ properties: $ref: /schemas/types.yaml#/definitions/uint32 enum: [1, 2, 3] + slow-charger-loop: + description: Allows PMIC charger loops which are slow(i.e. cannot meet the 15ms deadline) to + still comply to pSnkStby i.e Maximum power that can be consumed by sink while in Sink Standby + state as defined in 7.4.2 Sink Electrical Parameters of USB Power Delivery Specification + Revision 3.0, Version 1.2. When the property is set, the port requests pSnkStby(2.5W - + 5V@500mA) upon entering SNK_DISCOVERY(instead of 3A or the 1.5A, Rp current advertised, during + SNK_DISCOVERY) and the actual currrent limit after reception of PS_Ready for PD link or during + SNK_READY for non-pd link. + type: boolean + required: - compatible -- 2.7.4