linux-kernel - [PATCH v4 4/7] dt-bindings: drm/bridge: anx7625: Add mode-switch support

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Message-Id: <20220615172129.1314056-5-pmalani@chromium.org>
Date:   Wed, 15 Jun 2022 17:20:20 +0000
From:   Prashant Malani <pmalani@...omium.org>
To:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Cc:     bleung@...omium.org, swboyd@...omium.org,
        heikki.krogerus@...ux.intel.com,
        Prashant Malani <pmalani@...omium.org>,
        Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>, Andrzej Hajda <andrzej.hajda@...el.com>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS),
        dri-devel@...ts.freedesktop.org (open list:DRM DRIVERS),
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Jonas Karlman <jonas@...boo.se>,
        José Expósito <jose.exposito89@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Maxime Ripard <maxime@...no.tech>,
        Neil Armstrong <narmstrong@...libre.com>,
        Pin-Yen Lin <treapking@...omium.org>,
        Robert Foss <robert.foss@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Sam Ravnborg <sam@...nborg.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Xin Ji <xji@...logixsemi.com>
Subject: [PATCH v4 4/7] dt-bindings: drm/bridge: anx7625: Add mode-switch support

Analogix 7625 can be used in systems to switch USB Type-C DisplayPort
alternate mode lane traffic between 2 Type-C ports.

Update the binding to accommodate this usage by introducing a switch
property.

Reviewed-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Signed-off-by: Prashant Malani <pmalani@...omium.org>
---

Changes since v3:
- Fix unevaluatedProperties usage.
- Add additionalProperties to top level "switches" nodes.
- Make quotes consistent.
- Add '^..$' to regex.
(All suggested by Krzysztof Kozlowski)

Changes since v2:
- Added Reviewed-by and Tested-by tags.

Changes since v1:
- Introduced patternProperties for "switch" children (suggested by
  Krzysztof Kozlowski).
- Added unevaluatedProperties descriptor (suggested by Krzysztof
  Kozlowski).
- Added "address-cells" and "size-cells" properties to "switches".


 .../display/bridge/analogix,anx7625.yaml      | 64 +++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
index 35a48515836e..bc6f7644db31 100644
--- a/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/analogix,anx7625.yaml
@@ -105,6 +105,34 @@ properties:
       - port@0
       - port@1
 
+  switches:
+    type: object
+    description: Set of switches controlling DisplayPort traffic on
+      outgoing RX/TX lanes to Type C ports.
+    additionalProperties: false
+
+    properties:
+      '#address-cells':
+        const: 1
+
+      '#size-cells':
+        const: 0
+
+    patternProperties:
+      '^switch@[01]$':
+        $ref: /schemas/usb/typec-switch.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          reg:
+            maxItems: 1
+
+        required:
+          - reg
+
+    required:
+      - switch@0
+
 required:
   - compatible
   - reg
@@ -167,5 +195,41 @@ examples:
                     };
                 };
             };
+            switches {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                switch@0 {
+                    compatible = "typec-switch";
+                    reg = <0>;
+                    mode-switch;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        port@0 {
+                            reg = <0>;
+                            anx_typec0: endpoint {
+                                remote-endpoint = <&typec_port0>;
+                            };
+                        };
+                    };
+                };
+                switch@1 {
+                    compatible = "typec-switch";
+                    reg = <1>;
+                    mode-switch;
+
+                    ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        port@0 {
+                            reg = <0>;
+                            anx_typec1: endpoint {
+                                remote-endpoint = <&typec_port1>;
+                            };
+                        };
+                    };
+                };
+            };
         };
     };
-- 
2.36.1.476.g0c4daa206d-goog