linux-kernel - [PATCH v1 08/11] dt-bindings: usb: Add binding for Via lab VL817Q7 hub controller

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Message-Id: <20221228100321.15949-9-linux.amoon@gmail.com>
Date:   Wed, 28 Dec 2022 10:03:17 +0000
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>
Cc:     linux-amlogic@...ts.infradead.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1 08/11] dt-bindings: usb: Add binding for Via lab VL817Q7 hub controller

The VIA Lab VL817-Q7 is a USB 3.1 Gen 1 4-Port hub controller that
features 4 downstream ports, an internal 5V regulator and has
external reset pin.

Add a device tree binding for its USB protocol part.
The internal LDO is not covered by this and can just be modelled
as a fixed regulator.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
 .../bindings/usb/vialab,vl817q7.yaml          | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/vialab,vl817q7.yaml

diff --git a/Documentation/devicetree/bindings/usb/vialab,vl817q7.yaml b/Documentation/devicetree/bindings/usb/vialab,vl817q7.yaml
new file mode 100644
index 000000000000..4ae995160fd5
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/vialab,vl817q7.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+%YAML 1.2
+---
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Via labs VL817Q7 USB 3.1 hub controller
+
+maintainers:
+  - Anand Moon <linux.amoon@...il.com>
+
+allOf:
+  - $ref: usb-device.yaml#
+
+properties:
+  compatible:
+    enum:
+      - vialab,usb2109
+
+  reg: true
+
+  reset-gpios:
+    description: GPIO controlling the RESET# pin.
+
+  vdd-supply:
+    description:
+      the regulator that provides 5.0V core power to the hub.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    usb {
+        dr_mode = "host";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        hub: hub@1 {
+            compatible = "vialab,usb2109"
+            reg = <1>;
+            reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
+        };
+    };
-- 
2.38.1