linux-kernel - [PATCH v2 1/2] dt-bindings: usb: Add the binding example for the Genesys Logic GL3523 hub

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Message-ID: <20231011051152.133257-1-linux.amoon@gmail.com>
Date:   Wed, 11 Oct 2023 10:41:48 +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:     linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 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>
---
New patch.
---
 .../bindings/usb/genesys,gl850g.yaml          | 28 +++++++++++++++++--
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
index d0927f6768a4..2f6e0c870e1d 100644
--- a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
+++ b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
@@ -22,29 +22,51 @@ properties:
   reg: true
 
   reset-gpios:
+    maxItems: 1
     description: GPIO controlling the RESET# pin.
 
   vdd-supply:
     description:
       the regulator that provides 3.3V core power to the hub.
 
+  peer-hub:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      phandle to the peer hub on the controller.
+
 required:
   - compatible
   - reg
+  - reset-gpios
+  - vdd-supply
+  - peer-hub
 
 additionalProperties: false
 
 examples:
   - |
     #include <dt-bindings/gpio/gpio.h>
+
     usb {
         dr_mode = "host";
         #address-cells = <1>;
         #size-cells = <0>;
 
-        hub: hub@1 {
-            compatible = "usb5e3,608";
+        /* 2.0 hub on port 1 */
+        hub_2_0: hub@1 {
+            compatible = "usb5e3,610";
             reg = <1>;
-            reset-gpios = <&pio 7 2 GPIO_ACTIVE_LOW>;
+            vdd-supply = <&vcc_5v>;
+            peer-hub = <&hub_3_0>;
+            reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+        };
+
+        /* 3.1 hub on port 4 */
+        hub_3_0: hub@2 {
+            compatible = "usb5e3,620";
+            reg = <2>;
+            vdd-supply = <&vcc_5v>;
+            peer-hub = <&hub_2_0>;
+            reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
         };
     };
-- 
2.42.0