linux-kernel - [PATCH v2] dt-bindings: usb: ti,keystone-dwc3.yaml: Improve schema

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Message-ID: <5f81187b-0558-3815-051b-e40685fd047a@ti.com>
Date:   Fri, 5 Jun 2020 10:52:15 +0300
From:   Roger Quadros <rogerq@...com>
To:     <balbi@...nel.org>
CC:     <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] dt-bindings: usb: ti,keystone-dwc3.yaml: Improve schema

There were some review comments after the patch was integrated.
Address those.

Fixes: 1883a934e156 ("dt-bindings: usb: convert keystone-usb.txt to YAML")
Signed-off-by: Roger Quadros <rogerq@...com>
---

Changelog:
v2
- don't use quotes for enum/const string
- use phandle instead of phandle-array for phys
- add maxItems for phy-names

  .../bindings/usb/ti,keystone-dwc3.yaml        | 50 ++++++++++++++-----
  1 file changed, 37 insertions(+), 13 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/ti,keystone-dwc3.yaml b/Documentation/devicetree/bindings/usb/ti,keystone-dwc3.yaml
index f127535feb0b..394e47d2f5d7 100644
--- a/Documentation/devicetree/bindings/usb/ti,keystone-dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/ti,keystone-dwc3.yaml
@@ -11,64 +11,88 @@ maintainers:
  
  properties:
    compatible:
-    oneOf:
-      - const: "ti,keystone-dwc3"
-      - const: "ti,am654-dwc3"
+    items:
+      - enum:
+        - ti,keystone-dwc3
+        - ti,am654-dwc3
  
    reg:
      maxItems: 1
-    description: Address and length of the register set for the USB subsystem on
-      the SOC.
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
+  ranges: true
  
    interrupts:
      maxItems: 1
-    description: The irq number of this device that is used to interrupt the MPU.
-
  
    clocks:
+    $ref: /schemas/types.yaml#definitions/phandle-array
      description: Clock ID for USB functional clock.
  
+  assigned-clocks:
+    $ref: /schemas/types.yaml#definitions/phandle-array
+
+  assigned-clock-parents:
+    $ref: /schemas/types.yaml#definitions/phandle-array
+
    power-domains:
+    $ref: /schemas/types.yaml#definitions/phandle-array
      description: Should contain a phandle to a PM domain provider node
        and an args specifier containing the USB device id
        value. This property is as per the binding,
        Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
  
    phys:
+    $ref: /schemas/types.yaml#/definitions/phandle
      description:
        PHY specifier for the USB3.0 PHY. Some SoCs need the USB3.0 PHY
        to be turned on before the controller.
        Documentation/devicetree/bindings/phy/phy-bindings.txt
  
    phy-names:
+    maxItems: 1
      items:
-      - const: "usb3-phy"
+      - const: usb3-phy
+
+  dma-coherent: true
  
-  dwc3:
+  dma-ranges: true
+
+patternProperties:
+  "usb@[a-f0-9]+$":
+    type: object
      description: This is the node representing the DWC3 controller instance
        Documentation/devicetree/bindings/usb/dwc3.txt
  
  required:
    - compatible
    - reg
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
    - interrupts
-  - clocks
+
+additionalProperties: false
  
  examples:
    - |
      #include <dt-bindings/interrupt-controller/arm-gic.h>
  
-    usb: usb@...0000 {
+    dwc3@...0000 {
        compatible = "ti,keystone-dwc3";
        #address-cells = <1>;
        #size-cells = <1>;
        reg = <0x2680000 0x10000>;
        clocks = <&clkusb>;
-      clock-names = "usb";
        interrupts = <GIC_SPI 393 IRQ_TYPE_EDGE_RISING>;
        ranges;
  
-      dwc3@...0000 {
+      usb@...0000 {
          compatible = "synopsys,dwc3";
          reg = <0x2690000 0x70000>;
          interrupts = <GIC_SPI 393 IRQ_TYPE_EDGE_RISING>;
-- 
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