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From:   Prashant Malani <pmalani@chromium.org>
To:     linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
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        heikki.krogerus@linux.intel.com,
        Prashant Malani <pmalani@chromium.org>,
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        Sam Ravnborg <sam@ravnborg.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Xin Ji <xji@analogixsemi.com>
Subject: [PATCH v5 2/9] dt-bindings: drm/bridge: anx7625: Add mode-switch support
Date:   Wed, 22 Jun 2022 17:34:31 +0000
Message-Id: <20220622173605.1168416-3-pmalani@chromium.org>
In-Reply-To: <20220622173605.1168416-1-pmalani@chromium.org>
References: <20220622173605.1168416-1-pmalani@chromium.org>
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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: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Prashant Malani <pmalani@chromium.org>
---

Changes since v4:
- Added Reviewed-by tags.
- Patch moved to 2/9 position (since Patch v4 1/7 and 2/7 were
  applied to usb-next).

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>;
+                            };
+                        };
+                    };
+                };
+            };
         };
     };
-- 
2.37.0.rc0.104.g0611611a94-goog