linux-kernel - [RFC v4 1/5] dt-bindings: usb: Add bindings to support multiport properties

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Message-ID: <20230115114146.12628-2-quic_kriskura@quicinc.com>
Date:   Sun, 15 Jan 2023 17:11:42 +0530
From:   Krishna Kurapati <quic_kriskura@...cinc.com>
To:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "Andy Gross" <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        "Konrad Dybcio" <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Felipe Balbi <balbi@...nel.org>
CC:     <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <quic_pkondeti@...cinc.com>, <quic_ppratap@...cinc.com>,
        <quic_wcheng@...cinc.com>, <quic_jackp@...cinc.com>,
        <quic_harshq@...cinc.com>,
        Krishna Kurapati <quic_kriskura@...cinc.com>
Subject: [RFC v4 1/5] dt-bindings: usb: Add bindings to support multiport properties

Add bindings to indicate properties required to support multiport
on Snps Dwc3 controller.

Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
---
 .../devicetree/bindings/usb/snps,dwc3.yaml    | 53 ++++++++++++++++---
 1 file changed, 47 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index 6d78048c4613..3ea051beb2f8 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -81,15 +81,26 @@ properties:
 
   phys:
     minItems: 1
-    maxItems: 2
+    maxItems: 8
 
   phy-names:
     minItems: 1
-    maxItems: 2
-    items:
-      enum:
-        - usb2-phy
-        - usb3-phy
+    maxItems: 8
+    oneOf:
+    - items:
+        enum:
+          - usb2-phy
+          - usb3-phy
+    - items:
+        enum:
+          - usb2-phy_port0
+          - usb2-phy_port1
+          - usb2-phy_port2
+          - usb2-phy_port3
+          - usb3-phy_port0
+          - usb3-phy_port1
+          - usb3-phy_port2
+          - usb3-phy_port3
 
   resets:
     minItems: 1
@@ -360,6 +371,22 @@ properties:
     description:
       Enable USB remote wakeup.
 
+  num-ports:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      This property indicates the number of ports present on the target that
+      are to be serviced by the DWC3 controller.
+    minimum: 1
+    maximum: 4
+
+  num-ss-ports:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      This property indicates the number of SS capable ports present on the
+      target that are to be serviced by the DWC3 controller.
+    minimum: 1
+    maximum: 4
+
 unevaluatedProperties: false
 
 required:
@@ -388,4 +415,18 @@ examples:
       snps,dis_u2_susphy_quirk;
       snps,dis_enblslpm_quirk;
     };
+  - |
+    usb@...00000 {
+      compatible = "snps,dwc3";
+      reg = <0x4a000000 0xcfff>;
+      interrupts = <0 92 4>;
+      clocks = <&clk 1>, <&clk 2>, <&clk 3>;
+      clock-names = "bus_early", "ref", "suspend";
+      num-ports = <2>;
+      num-ss-ports = <1>;
+      phys = <&usb2_phy0>, <&usb3_phy0>, <&usb2_phy1>;
+      phy-names = "usb2-phy_port0", "usb3-phy_port0", "usb2-phy_port1";
+      snps,dis_u2_susphy_quirk;
+      snps,dis_enblslpm_quirk;
+    };
 ...
-- 
2.39.0