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Date:   Wed, 12 Jul 2023 15:28:52 +0800
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Message-ID: <20230712072853.1755559-2-kyletso@google.com>
Subject: [PATCH 1/2] dt-bindings: connector: Add child nodes for multiple PD capabilities
From:   Kyle Tso <kyletso@google.com>
To:     robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        conor+dt@kernel.org, linux@roeck-us.net,
        heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org
Cc:     badhri@google.com, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
        Kyle Tso <kyletso@google.com>
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Precedence: bulk

Define a new optional property "capabilities" which is a child node
under connector to contain multiple USB Power Delivery capabilities.

Define a new property with pattern (e.g. caps0, caps1) which is a child
node under "capabilities". Each node contains PDO data of a selectable
Power Delivery capability.

Signed-off-by: Kyle Tso <kyletso@google.com>
---
 .../bindings/connector/usb-connector.yaml     | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
index 1c4d3eb87763..b8c96d0a127a 100644
--- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
+++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
@@ -228,6 +228,50 @@ properties:
       SNK_READY for non-pd link.
     type: boolean
 
+  capabilities:
+    description: A child node to contain all the selectable USB Power Delivery capabilities.
+    type: object
+
+    patternProperties:
+      "^caps[0-9]+$":
+        description: Child nodes under "capabilities" node. Each node contains a selectable USB
+          Power Delivery capability.
+        type: object
+
+        properties:
+          source-pdos:
+            description: An array of u32 with each entry providing supported power
+              source data object(PDO), the detailed bit definitions of PDO can be found
+              in "Universal Serial Bus Power Delivery Specification" chapter 6.4.1.2
+              Source_Capabilities Message, the order of each entry(PDO) should follow
+              the PD spec chapter 6.4.1. Required for power source and power dual role.
+              User can specify the source PDO array via PDO_FIXED/BATT/VAR/PPS_APDO()
+              defined in dt-bindings/usb/pd.h.
+            $ref: /schemas/types.yaml#/definitions/uint32-array
+            minItems: 1
+            maxItems: 7
+
+          sink-pdos:
+            description: An array of u32 with each entry providing supported power sink
+              data object(PDO), the detailed bit definitions of PDO can be found in
+              "Universal Serial Bus Power Delivery Specification" chapter 6.4.1.3
+              Sink Capabilities Message, the order of each entry(PDO) should follow the
+              PD spec chapter 6.4.1. Required for power sink and power dual role. User
+              can specify the sink PDO array via PDO_FIXED/BATT/VAR/PPS_APDO() defined
+              in dt-bindings/usb/pd.h.
+            $ref: /schemas/types.yaml#/definitions/uint32-array
+            minItems: 1
+            maxItems: 7
+
+          op-sink-microwatt:
+            description: Sink required operating power in microwatt, if source can't
+              offer the power, Capability Mismatch is set. Required for power sink and
+              power dual role.
+
+        additionalProperties: false
+
+    additionalProperties: false
+
 dependencies:
   sink-vdos-v1: [ 'sink-vdos' ]
   sink-vdos: [ 'sink-vdos-v1' ]
-- 
2.41.0.255.g8b1d071c50-goog