[PATCH v3 2/2] dt-bindings: phy: Add bindings doc for Sunplus USB2 PHY driver

[Vincent Shih]

Add bindings doc for Sunplus USB2 PHY driver

Signed-off-by: Vincent Shih <vincent.sunplus at gmail.com>
---
Changes in v3:
 - Addressed the comments from Mr. Krzysztof Kozlowski

 .../bindings/phy/sunplus,sp7021-usb2-phy.yaml      | 73 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 74 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/sunplus,sp7021-usb2-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/sunplus,sp7021-usb2-phy.yaml b/Documentation/devicetree/bindings/phy/sunplus,sp7021-usb2-phy.yaml
new file mode 100644
index 0000000..069d422
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/sunplus,sp7021-usb2-phy.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/phy/sunplus,sp7021-usb2-phy.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Sunplus SP7021 USB 2.0 PHY Controller
+
+maintainers:
+  - Vincent Shih <vincent.sunplus at gmail.com>
+
+properties:
+  compatible:
+    const: sunplus,sp7021-usb2-phy
+
+  reg:
+    items:
+      - description: UPHY register region
+      - description: MOON4 register region
+
+  reg-names:
+    items:
+      - const: phy
+      - const: moon4
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 0
+
+  nvmem-cell-names:
+    description: names corresponding to the nvmem cells of disconnect voltage
+    const: disc_vol
+
+  nvmem-cells:
+    description: nvmem cell address of disconnect voltage
+    maxItems: 1
+
+  sunplus,disc-vol-addr-off:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: the otp address offset of disconnect voltage
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - resets
+  - "#phy-cells"
+  - nvmem-cell-names
+  - nvmem-cells
+  - sunplus,disc-vol-addr-off
+
+additionalProperties: false
+
+examples:
+  - |
+    sp_uphy0: usb-phy at 9c004a80 {
+      compatible = "sunplus,sp7021-usb2-phy";
+      reg = <0x9c004a80 0x80>, <0x9c000248 0x10>;
+      reg-names = "phy", "moon4";
+      clocks = <&clkc 0x3d>;
+      resets = <&rstc 0x2d>;
+      #phy-cells = <0>;
+      nvmem-cell-names = "disc_vol";
+      nvmem-cells = <&disc_vol>;
+      sunplus,disc-vol-addr-off = <0>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 31d2ba0..989e5ba 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19227,6 +19227,7 @@ SUNPLUS USB2 PHY DRIVER
 M:	Vincent Shih <vincent.sunplus at gmail.com>
 L:	linux-usb at vger.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/phy/sunplus,sp7021-usb2-phy.yaml
 F:	drivers/phy/sunplus/Kconfig
 F:	drivers/phy/sunplus/Makefile
 F:	drivers/phy/sunplus/phy-sunplus-usb2.c
-- 
2.7.4