linux-kernel - [PATCH 1/3] dt-bindings: phy: Add StarFive JH7110 USB dt-binding

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Date:   Mon, 6 Mar 2023 17:52:57 +0800
From:   Minda Chen <minda.chen@...rfivetech.com>
To:     Emil Renner Berthing <kernel@...il.dk>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>,
        Minda Chen <minda.chen@...rfivetech.com>
Subject: [PATCH 1/3] dt-bindings: phy: Add StarFive JH7110 USB dt-binding

Add StarFive JH7110 SoC USB 3.0 phy dt-binding.
USB controller is cadence USB 3.0 IP.

Signed-off-by: Minda Chen <minda.chen@...rfivetech.com>
---
 .../bindings/phy/starfive,jh7110-usb-phy.yaml | 116 ++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/starfive,jh7110-usb-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/starfive,jh7110-usb-phy.yaml b/Documentation/devicetree/bindings/phy/starfive,jh7110-usb-phy.yaml
new file mode 100644
index 000000000000..05b6c47d4a86
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/starfive,jh7110-usb-phy.yaml
@@ -0,0 +1,116 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/starfive,jh7110-usb-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive USB 2.0 and 3.0 PHY
+
+maintainers:
+  - Minda Chen<minda.chen@...rfivetech.com>
+
+properties:
+  compatible:
+    items:
+      - const: starfive,jh7110-usb-phy
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: usb3
+      - const: usb2
+
+  clocks:
+    maxItems: 8
+
+  clock-names:
+    items:
+       - const: usb_125m
+       - const: usb0_app_125
+       - const: usb0_lpm
+       - const: usb0_stb
+       - const: usb0_apb
+       - const: usb0_axi
+       - const: usb0_utmi_apb
+
+  resets:
+    items:
+       - description: USB0_PWRUP reset
+       - description: USB0_APB reset
+       - description: USB0_AXI reset
+       - description: USB0_UTMI_APB reset
+
+  starfive,sys-syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      items:
+        - description: phandle to System Register Controller sys_syscon node.
+        - description: offset of SYS_SYSCONSAIF__SYSCFG register for USB.
+    description:
+      The phandle to System Register Controller syscon node and the offset
+      of SYS_SYSCONSAIF__SYSCFG register for USB.
+
+  starfive,stg-syscon:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+      items:
+        - description: phandle to System Register Controller stg_syscon node.
+        - description: offset of STG_SYSCONSAIF__SYSCFG register for USB.
+    description:
+      The phandle to System Register Controller syscon node and the offset
+      of STG_SYSCONSAIF__SYSCFG register for USB. Total 4 regsisters offset
+      for USB.
+
+  dr_mode:
+    description: PHY mode.
+    enum:
+      - host
+      - peripheral
+      - otg
+
+  starfive,usb2-only
+    description: Set USB using usb 2.0 phy. Supprt USB 2.0 only
+
+  '#phy-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - reset
+  - starfive,sys-syscon
+  - starfive,stg-syscon
+  - dr_mode
+  - '#phy-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    usbphy@...00000 {
+      compatible = "starfive,jh7110-usb";
+      reg = <0x0 0x10210000 0x0 0x1000>,
+            <0x0 0x10200000 0x0 0x1000>;
+      reg-names = "usb3", "usb2";
+      clocks = <&syscrg 95>,
+               <&stgcrg 6>,
+               <&stgcrg 4>,
+               <&stgcrg 5>,
+               <&stgcrg 1>,
+               <&stgcrg 3>,
+               <&stgcrg 2>;
+      clock-names = "usb_125m", "usb0_app_125", "usb0_lpm",
+                    "usb0_stb", "usb0_apb", "usb0_axi", "usb0_utmi_apb";
+      resets = <&stgcrg 10>,
+               <&stgcrg 8>,
+               <&stgcrg 7>,
+               <&stgcrg 9>;
+      starfive,stg-syscon = <&stg_syscon 0x4 0xc4 0x148 0x1f4>;
+      starfive,sys-syscon = <&sys_syscon 0x18>;
+      dr_mode = "host";
+      #phy-cells = <0>;
+    };
-- 
2.17.1