linux-kernel - [PATCH 1/2] dt-bindings: usb: add NXP PTN36502 Type-C redriver bindings

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Message-Id: <20231013-ptn36502-v1-1-98109a430efc@fairphone.com>
Date:   Fri, 13 Oct 2023 16:24:47 +0200
From:   Luca Weiss <luca.weiss@...rphone.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Luca Weiss <luca.weiss@...rphone.com>
Subject: [PATCH 1/2] dt-bindings: usb: add NXP PTN36502 Type-C redriver
 bindings

Document bindings for this Type-C USB 3.1 Gen 1 and DisplayPort v1.2
combo redriver.

The PTN36502 can also run in GPIO mode where it is configured
differently, without any I2C connection, but this is not supported yet.

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 .../devicetree/bindings/usb/nxp,ptn36502.yaml      | 94 ++++++++++++++++++++++
 1 file changed, 94 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml b/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml
new file mode 100644
index 000000000000..eee548ac1abe
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/nxp,ptn36502.yaml
@@ -0,0 +1,94 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/nxp,ptn36502.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP PTN36502 Type-C USB 3.1 Gen 1 and DisplayPort v1.2 combo redriver
+
+maintainers:
+  - Luca Weiss <luca.weiss@...rphone.com>
+
+properties:
+  compatible:
+    enum:
+      - nxp,ptn36502
+
+  reg:
+    maxItems: 1
+
+  vdd18-supply:
+    description: Power supply for VDD18 pin
+
+  retimer-switch:
+    description: Flag the port as possible handle of SuperSpeed signals retiming
+    type: boolean
+
+  orientation-switch:
+    description: Flag the port as possible handler of orientation switching
+    type: boolean
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Super Speed (SS) Output endpoint to the Type-C connector
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Super Speed (SS) Input endpoint from the Super-Speed PHY
+
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Sideband Use (SBU) AUX lines endpoint to the Type-C connector for the purpose of
+          handling altmode muxing and orientation switching.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        typec-mux@1a {
+            compatible = "nxp,ptn36502";
+            reg = <0x1a>;
+
+            vdd18-supply = <&usb_redrive_1v8>;
+
+            retimer-switch;
+            orientation-switch;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+                    usb_con_ss: endpoint {
+                        remote-endpoint = <&typec_con_ss>;
+                    };
+                };
+                port@1 {
+                    reg = <1>;
+                    phy_con_ss: endpoint {
+                        remote-endpoint = <&usb_phy_ss>;
+                    };
+                };
+                port@2 {
+                    reg = <2>;
+                    usb_con_sbu: endpoint {
+                        remote-endpoint = <&typec_dp_aux>;
+                    };
+                };
+            };
+        };
+    };
+...

-- 
2.42.0