linux-kernel - [PATCH v3 1/2] dt-bindings: usb: Add the binding example for the Genesys Logic GL3523 hub

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Message-ID: <20231119023454.1591-2-linux.amoon@gmail.com>
Date:   Sun, 19 Nov 2023 08:04:50 +0530
From:   Anand Moon <linux.amoon@...il.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>,
        Icenowy Zheng <uwu@...nowy.me>
Cc:     Anand Moon <linux.amoon@...il.com>, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/2] dt-bindings: usb: Add the binding example for the Genesys Logic GL3523 hub

Add the binding example for the USB3.1 Genesys Logic GL3523
integrates with USB 3.1 Gen 1 Super Speed and USB 2.0 High-Speed
hub.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
V3: fix the dt_binding_check error, added new example for Genesys GL3523
v2: added Genesys GL3523 binding
v1: none
---
 .../bindings/usb/genesys,gl850g.yaml          | 63 +++++++++++++++++--
 1 file changed, 59 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
index ee08b9c3721f..f8e88477fa11 100644
--- a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
+++ b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
@@ -9,9 +9,6 @@ title: Genesys Logic USB hub controller
 maintainers:
   - Icenowy Zheng <uwu@...nowy.me>
 
-allOf:
-  - $ref: usb-device.yaml#
-
 properties:
   compatible:
     enum:
@@ -27,12 +24,44 @@ properties:
 
   vdd-supply:
     description:
-      the regulator that provides 3.3V core power to the hub.
+      phandle to the regulator that provides power to the hub.
+
+  peer-hub:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      phandle to the peer hub on the controller.
 
 required:
   - compatible
   - reg
 
+allOf:
+  - $ref: usb-device.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - usb5e3,608
+    then:
+      properties:
+        peer-hub: false
+        vdd-supply: false
+        reset-gpios: true
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - usb5e3,610
+              - usb5e3,620
+    then:
+      properties:
+        peer-hub: true
+        vdd-supply: true
+        reset-gpios: true
+
 additionalProperties: false
 
 examples:
@@ -49,3 +78,29 @@ examples:
             reset-gpios = <&pio 7 2 GPIO_ACTIVE_LOW>;
         };
     };
+
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    usb {
+        dr_mode = "host";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        /* 2.0 hub on port 1 */
+        hub_2_0: hub@1 {
+            compatible = "usb5e3,610";
+            reg = <1>;
+            peer-hub = <&hub_3_0>;
+            reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+            vdd-supply = <&vcc_5v>;
+        };
+
+        /* 3.1 hub on port 4 */
+        hub_3_0: hub@2 {
+            compatible = "usb5e3,620";
+            reg = <2>;
+            peer-hub = <&hub_2_0>;
+            reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+            vdd-supply = <&vcc_5v>;
+        };
+    };
-- 
2.42.0