linux-kernel - [PATCH v2 6/6] Documentation: connector: Add slow-charger-loop definition

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Message-Id: <20210407200723.1914388-6-badhri@google.com>
Date:   Wed,  7 Apr 2021 13:07:23 -0700
From:   Badhri Jagan Sridharan <badhri@...gle.com>
To:     Guenter Roeck <linux@...ck-us.net>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Adam Thomson <Adam.Thomson.Opensource@...semi.com>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Kyle Tso <kyletso@...gle.com>,
        Badhri Jagan Sridharan <badhri@...gle.com>
Subject: [PATCH v2 6/6] Documentation: connector: Add slow-charger-loop definition

To allow slow charger loops to comply to pSnkStby requirement,
this patch introduces slow-charger-loop which when set makes
the port request PD_P_SNK_STDBY_MW 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.

Signed-off-by: Badhri Jagan Sridharan <badhri@...gle.com>
---
 .../devicetree/bindings/connector/usb-connector.yaml       | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
index b6daedd62516..09ad3ad983a6 100644
--- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
+++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
@@ -197,6 +197,13 @@ properties:
     $ref: /schemas/types.yaml#/definitions/uint32
     enum: [1, 2, 3]
 
+  slow-charger-loop:
+    description: Allows slow charging loops to comply to pSnkStby. When set makes
+      the port request pSnkStby(2.5W - 5V@...mA) upon entering SNK_DISCOVERY(instead
+      of 3A or the 1.5A 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
 
-- 
2.31.1.295.g9ea45b61b8-goog