linux-kernel - [PATCH 1/2] dt-bindings: usb: misc: Add binding for Microchip usb5744 hub

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Message-Id: <076994fc051e9230a3fef9e3eb5ec932104ef16a.1612864393.git.michal.simek@xilinx.com>
Date:   Tue,  9 Feb 2021 10:53:19 +0100
From:   Michal Simek <michal.simek@...inx.com>
To:     linux-kernel@...r.kernel.org, monstr@...str.eu,
        michal.simek@...inx.com, git@...inx.com
Cc:     Piyush Mehta <piyush.mehta@...inx.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org
Subject: [PATCH 1/2] dt-bindings: usb: misc: Add binding for Microchip usb5744 hub

From: Piyush Mehta <piyush.mehta@...inx.com>

Added dt binding for usb5744 driver.

Signed-off-by: Piyush Mehta <piyush.mehta@...inx.com>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 .../bindings/usb/microchip,usb5744.yaml       | 56 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/microchip,usb5744.yaml

diff --git a/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml b/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml
new file mode 100644
index 000000000000..fe222f6db81d
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/microchip,usb5744.yaml
@@ -0,0 +1,56 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/usb/microchip,usb5744.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Bindings for the Microchip USB5744 4-port Hub Controller
+
+description:
+  Microchip’s USB5744 SmartHub™ IC is a 4 port, SuperSpeed (SS)/Hi-Speed (HS),
+  low power, low pin count configurable and fully compliant with the USB 3.1
+  Gen 1 specification. The USB5744 also supports Full Speed (FS) and Low Speed
+  (LS) USB signaling, offering complete coverage of all defined USB operating
+  speeds. The new SuperSpeed hubs operate in parallel with the USB 2.0
+  controller, so 5 Gbps SuperSpeed data transfers are not affected by slower
+  USB 2.0 traffic.
+
+maintainers:
+  - Piyush Mehta <piyush.mehta@...inx.com>
+  - Michal Simek <michal.simek@...inx.com>
+
+properties:
+  compatible:
+    const: microchip,usb5744
+
+  reg:
+    maxItems: 1
+    description: |
+      Specifies the i2c slave address, it is required and should be 0x2d
+      if I2C is used.
+
+  reset-gpios:
+    maxItems: 1
+    description:
+      The phandle and specifier for the GPIO that controls the RESET line of
+      USB hub.
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        usb5744@2d {
+            compatible = "microchip,usb5744";
+            reg = <0x2d>;
+            reset-gpios = <&gpio 44 GPIO_ACTIVE_HIGH>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 41e8d3d7faec..7439471b5d37 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2697,6 +2697,7 @@ W:	http://wiki.xilinx.com
 T:	git https://github.com/Xilinx/linux-xlnx.git
 F:	Documentation/devicetree/bindings/i2c/cdns,i2c-r1p10.yaml
 F:	Documentation/devicetree/bindings/i2c/xlnx,xps-iic-2.00.a.yaml
+F:	Documentation/devicetree/bindings/usb/microchip,usb5744.yaml
 F:	arch/arm/mach-zynq/
 F:	drivers/block/xsysace.c
 F:	drivers/clocksource/timer-cadence-ttc.c
-- 
2.30.0