[PATCH 3/5] Documentation: bindings: add dt documentation for rockchip usb3 phy

[Peter Geis <pgwipeout@gmail.com>]

Add devicetree bindings for inno-usb3-phy.

Signed-off-by: Peter Geis <pgwipeout@gmail.com>
---
 .../bindings/phy/phy-rockchip-inno-usb3.yaml  | 157 ++++++++++++++++++
 .../devicetree/bindings/soc/rockchip/grf.txt  |   2 +
 .../devicetree/bindings/usb/rockchip,dwc3.txt |   9 +-
 3 files changed, 165 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb3.yaml

diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb3.yaml b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb3.yaml
new file mode 100644
index 000000000000..f4f28625173a
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb3.yaml
@@ -0,0 +1,157 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/phy/phy-rockchip-inno-usb3.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: ROCKCHIP USB 3.0 PHY WITH INNO IP BLOCK
+
+maintainers:
+
+properties:
+  compatible:
+    enum:
+      - rockchip,rk3328-u3phy
+
+  reg:
+    - description: the base address of the USB 3.0 PHY
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-names:
+    items:
+      - const: linestate
+        description: host/otg linestate interrupt
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: u3phy-otg
+        description: USB 3.0 PHY UTMI
+      - const: u3phy-pipe
+        description: USB 3.0 PHY Pipe
+
+  resets:
+    maxItems: 6
+
+  reset-names:
+    items:
+      - const: u3phy-u2-por
+      description: USB 2.0 logic of USB 3.0 PHY
+      - const: u3phy-u3-por
+      description: USB 3.0 logic of USB 3.0 PHY
+      - const: u3phy-pipe-mac
+      description: USB 3.0 PHY pipe MAC
+      - const: u3phy-utmi-mac
+      description: USB 3.0 PHY utmi MAC
+      - const: u3phy-utmi-apb
+      description: USB 3.0 PHY utmi apb
+      - const: u3phy-pipe-apb
+      description: USB 3.0 PHY pipe apb
+
+  "#phy-cells":
+    const: 1
+
+  rockchip,u3phygrf:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    type: array
+    - description: phandle to the syscon managing the
+                   "USB 3.0 PHY general register files".
+
+  vbus-drv-gpios:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    type: array
+    - description: phandle for gpio vbus supply
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - "#phy-cells"
+  - rockchip,u3phygrf
+
+patternProperties:
+  "^u3phy_utmi@[0-9a-f]+$":
+    type: object
+
+    properties:
+      - description: USB 2.0 utmi phy.
+
+      rockchip,odt-val-tuning:
+        type: boolean
+        - description: specify 45ohm ODT tuning value.
+
+      "phy-cells":
+        const: 0
+
+    required:
+      - reg
+      - "#phy-cells"
+
+patternProperties:
+  "^u3phy_pipe@[0-9a-f]+$":
+    type: object
+
+    properties:
+      - description: USB 3.0 pipe phy.
+
+      rockchip,refclk-25m-quirk :
+
+        - description: phy reference clock changed to 25m quirk.
+
+      "phy-cells":
+        const: 0
+
+    required:
+      - reg
+      - "#phy-cells"
+
+examples:
+
+usb3phy_grf: syscon@ff460000 {
+	compatible = "rockchip,usb3phy-grf", "syscon";
+	reg = <0x0 0xff460000 0x0 0x1000>;
+};
+
+...
+
+u3phy: usb3-phy@ff470000 {
+	compatible = "rockchip,rk3328-u3phy";
+	reg = <0x0 0xff470000 0x0 0x0>;
+	rockchip,u3phygrf = <&usb3phy_grf>;
+	interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
+	interrupt-names = "linestate";
+	clocks = <&cru PCLK_USB3PHY_OTG>, <&cru PCLK_USB3PHY_PIPE>;
+	clock-names = "u3phy-otg", "u3phy-pipe";
+	resets = <&cru SRST_USB3PHY_U2>,
+		 <&cru SRST_USB3PHY_U3>,
+		 <&cru SRST_USB3PHY_PIPE>,
+		 <&cru SRST_USB3OTG_UTMI>,
+		 <&cru SRST_USB3PHY_OTG_P>,
+		 <&cru SRST_USB3PHY_PIPE_P>;
+	reset-names = "u3phy-u2-por", "u3phy-u3-por",
+		      "u3phy-pipe-mac", "u3phy-utmi-mac",
+		      "u3phy-utmi-apb", "u3phy-pipe-apb";
+	vbus-drv-gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+	ranges;
+
+	u3phy_utmi: utmi@ff470000 {
+		reg = <0x0 0xff470000 0x0 0x8000>;
+		#phy-cells = <0>;
+	};
+
+	u3phy_pipe: pipe@ff478000 {
+		reg = <0x0 0xff478000 0x0 0x8000>;
+		#phy-cells = <0>;
+	};
+};
diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.txt b/Documentation/devicetree/bindings/soc/rockchip/grf.txt
index ada5435ce2c3..5f2f19344cc7 100644
--- a/Documentation/devicetree/bindings/soc/rockchip/grf.txt
+++ b/Documentation/devicetree/bindings/soc/rockchip/grf.txt
@@ -34,6 +34,8 @@ Required Properties:
    - "rockchip,rk3328-usb2phy-grf", "syscon": for rk3328
 - compatible: USBGRF should be one of the following:
    - "rockchip,rv1108-usbgrf", "syscon": for rv1108
+- compatible: USB3PHYGRF should be one of the following:
+   - "rockchip,u3phy-grf", "syscon"
 - reg: physical base address of the controller and length of memory mapped
   region.
 
diff --git a/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt b/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt
index c8c4b00ecb94..7ac8b748bac8 100644
--- a/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/rockchip,dwc3.txt
@@ -1,7 +1,9 @@
 Rockchip SuperSpeed DWC3 USB SoC controller
 
 Required properties:
-- compatible:	should contain "rockchip,rk3399-dwc3" for rk3399 SoC
+- compatible:	should be one of the listed compatibles:
+  - "rockchip,rk3328-dwc3" , "rockchip,rk3399-dwc3"	for rk3328 SoC
+  - "rockchip,rk3399-dwc3" 				for rk3399 SoC
 - clocks:	A list of phandle + clock-specifier pairs for the
 		clocks listed in clock-names
 - clock-names:	Should contain the following:
@@ -16,8 +18,9 @@ A child node must exist to represent the core DWC3 IP block. The name of
 the node is not important. The content of the node is defined in dwc3.txt.
 
 Phy documentation is provided in the following places:
-Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt - USB2.0 PHY
-Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt     - Type-C PHY
+Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt  - USB2.0 PHY
+Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb3.yaml - USB3.0 PHY
+Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt      - Type-C PHY
 
 Example device nodes:
 
-- 
2.20.1