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riscv: sophgo: add top syscon device for cv18xx

PATCH Applied Longbin Li 3 participants 6 messages Nov 1, 2025 – Nov 17, 2025

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Device tree bindings RISC-V Sophgo devicetrees and drivers
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Longbin Li

author
#0 lore raw

v5 cover riscv: sophgo: add top syscon device for cv18xx

Add top syscon device bindings related DTS change for CV1800.

---
Changes from v4:
- https://lore.kernel.org/all/[email protected]/
- Drop the labels in the example.
- Drop the patternProperties.

Changes from v3:
- https://lore.kernel.org/all/[email protected]/
- Corrected Co-developed-by information in commit message.
- Fixed patch version number.

Changes from v2:
- https://lore.kernel.org/all/[email protected]/
- Add ranges property.
- Use proper regex in patternProperties.
- Add complete example including child nodes.

Changed by RFC:
- https://lore.kernel.org/all/[email protected]/

---

Longbin Li (3):
dt-bindings: soc: sophgo: add TOP syscon for CV18XX/SG200X series SoC
riscv: dts: sophgo: Add syscon node for cv18xx
riscv: dts: sophgo: Add USB support for cv18xx

 .../soc/sophgo/sophgo,cv1800b-top-syscon.yaml | 80 +++++++++++++++++++
 .../boot/dts/sophgo/cv1800b-milkv-duo.dts     |  5 ++
 arch/riscv/boot/dts/sophgo/cv180x.dtsi        | 42 ++++++++++
 .../boot/dts/sophgo/cv1812h-huashan-pi.dts    |  5 ++
 .../dts/sophgo/sg2002-licheerv-nano-b.dts     |  5 ++
 5 files changed, 137 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/sophgo/sophgo,cv1800b-top-syscon.yaml

--
2.51.0

author
#1 lore raw

PATCH v5 1/3 dt-bindings: soc: sophgo: add TOP syscon for CV18XX/SG200X series SoC

The Sophgo CV18XX/SG200X SoC top misc system controller provides register access to configure related modules. It includes a usb2 phy and a dma multiplexer.

Co-developed-by Inochi Amaoto <[email protected]>
Signed-off-by Inochi Amaoto <[email protected]>
Signed-off-by Longbin Li <[email protected]>
---
 .../soc/sophgo/sophgo,cv1800b-top-syscon.yaml | 80 +++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/sophgo/sophgo,cv1800b-top-syscon.yaml
Documentation/devicetree/bindings/soc/sophgo/sophgo,cv1800b-top-syscon.yaml new file +80 -0
new file mode 100644
index 000000000000..b2e8e0cb4ea6
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/sophgo/sophgo,cv1800b-top-syscon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo CV18XX/SG200X SoC top system controller
+
+maintainers:
+  - Inochi Amaoto <[email protected]>
+
+description:
+  The Sophgo CV18XX/SG200X SoC top misc system controller provides
+  register access to configure related modules.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: sophgo,cv1800b-top-syscon
+          - const: syscon
+          - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
+  dma-router@154:
+    $ref: /schemas/dma/sophgo,cv1800b-dmamux.yaml#
+    unevaluatedProperties: false
+
+  phy@48:
+    $ref: /schemas/phy/sophgo,cv1800b-usb2-phy.yaml#
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/sophgo,cv1800.h>
+
+    syscon@3000000 {
+      compatible = "sophgo,cv1800b-top-syscon", "syscon", "simple-mfd";
+      reg = <0x03000000 0x1000>;
+      #address-cells = <1>;
+      #size-cells = <1>;
+
+      phy@48 {
+        compatible = "sophgo,cv1800b-usb2-phy";
+        reg = <0x48 0x4>;
+        #phy-cells = <0>;
+        clocks = <&clk CLK_USB_125M>,
+                 <&clk CLK_USB_33K>,
+                 <&clk CLK_USB_12M>;
+        clock-names = "app", "stb", "lpm";
+        resets = <&rst 58>;
+      };
+
+      dma-router@154 {
+        compatible = "sophgo,cv1800b-dmamux";
+        reg = <0x154 0x8>, <0x298 0x4>;
+        #dma-cells = <2>;
+        dma-masters = <&dmac>;
+      };
+    };
+
+...

--
2.51.0

Reviewed-by on v5 1/3
#2 lore raw

Re: [PATCH v5 1/3] dt-bindings: soc: sophgo: add TOP syscon for CV18XX/SG200X series SoC

Quoted 7 lines · Longbin Li

The Sophgo CV18XX/SG200X SoC top misc system controller provides register access to configure related modules. It includes a usb2 phy and a dma multiplexer.

Co-developed-by Inochi Amaoto <[email protected]>
Signed-off-by Inochi Amaoto <[email protected]>
Signed-off-by Longbin Li <[email protected]>
Reviewed-by Conor Dooley <[email protected]>

pw-bot: not-applicable

author
#3 lore raw

PATCH v5 2/3 riscv: dts: sophgo: Add syscon node for cv18xx

In reply to Longbin Li

Add top syscon node and all subdevice nodes for cv18xx series SoC.

Co-developed-by Inochi Amaoto <[email protected]>
Signed-off-by Inochi Amaoto <[email protected]>
Signed-off-by Longbin Li <[email protected]>
Tested-by Alexander Sverdlin <[email protected]>
---
 arch/riscv/boot/dts/sophgo/cv180x.dtsi | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
arch/riscv/boot/dts/sophgo/cv180x.dtsi +26 -0
index ccdb45498653..42303acb2b39 100644
@@ -25,6 +25,32 @@ soc {
 		#size-cells = <1>;
 		ranges;
 
+		syscon: syscon@3000000 {
+			compatible = "sophgo,cv1800b-top-syscon",
+				     "syscon", "simple-mfd";
+			reg = <0x03000000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			usbphy: phy@48 {
+				compatible = "sophgo,cv1800b-usb2-phy";
+				reg = <0x48 0x4>;
+				#phy-cells = <0>;
+				clocks = <&clk CLK_USB_125M>,
+					 <&clk CLK_USB_33K>,
+					 <&clk CLK_USB_12M>;
+				clock-names = "app", "stb", "lpm";
+				resets = <&rst RST_COMBO_PHY0>;
+			};
+
+			dmamux: dma-router@154 {
+				compatible = "sophgo,cv1800b-dmamux";
+				reg = <0x154 0x8>, <0x298 0x4>;
+				#dma-cells = <2>;
+				dma-masters = <&dmac>;
+			};
+		};
+
 		rst: reset-controller@3003000 {
 			compatible = "sophgo,cv1800b-reset";
 			reg = <0x3003000 0x1000>;

--
2.51.0

author
#4 lore raw

PATCH v5 3/3 riscv: dts: sophgo: Add USB support for cv18xx

In reply to Longbin Li

Add USB controller node for cv18xx and enable it for Huashan Pi, milkv-duo.

Co-developed-by Inochi Amaoto <[email protected]>
Signed-off-by Inochi Amaoto <[email protected]>
Signed-off-by Longbin Li <[email protected]>
Tested-by Alexander Sverdlin <[email protected]>
---
 arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts |  5 +++++
 arch/riscv/boot/dts/sophgo/cv180x.dtsi           | 16 ++++++++++++++++
 .../riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts |  5 +++++
 .../boot/dts/sophgo/sg2002-licheerv-nano-b.dts   |  5 +++++
 4 files changed, 31 insertions(+)
arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts +5 -0
index 9feb520eaec4..0e6d79e6e3a4 100644
@@ -100,3 +100,8 @@ &uart0 {
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&usb {
+	dr_mode = "host";
+	status = "okay";
+};
arch/riscv/boot/dts/sophgo/cv180x.dtsi +16 -0
index 42303acb2b39..1b2b1969a648 100644
@@ -432,6 +432,22 @@ dmac: dma-controller@4330000 {
 			status = "disabled";
 		};
 
+		usb: usb@4340000 {
+			compatible = "sophgo,cv1800b-usb";
+			reg = <0x04340000 0x10000>;
+			clocks = <&clk CLK_AXI4_USB>, <&clk CLK_APB_USB>;
+			clock-names = "otg", "utmi";
+			g-np-tx-fifo-size = <32>;
+			g-rx-fifo-size = <536>;
+			g-tx-fifo-size = <768 512 512 384 128 128>;
+			interrupts = <SOC_PERIPHERAL_IRQ(14) IRQ_TYPE_LEVEL_HIGH>;
+			phys = <&usbphy>;
+			phy-names = "usb2-phy";
+			resets = <&rst RST_USB>;
+			reset-names = "dwc2";
+			status = "disabled";
+		};
+
 		rtc@5025000 {
 			compatible = "sophgo,cv1800b-rtc", "syscon";
 			reg = <0x5025000 0x2000>;
arch/riscv/boot/dts/sophgo/cv1812h-huashan-pi.dts +5 -0
index 4a5835fa9e96..aedf79f47407 100644
@@ -86,3 +86,8 @@ &sdhci1 {
 &uart0 {
 	status = "okay";
 };
+
+&usb {
+	dr_mode = "host";
+	status = "okay";
+};
arch/riscv/boot/dts/sophgo/sg2002-licheerv-nano-b.dts +5 -0
index 86a712b953a5..b1853770d017 100644
@@ -93,3 +93,8 @@ &uart0 {
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&usb {
+	dr_mode = "host";
+	status = "okay";
+};

--
2.51.0

maintainer Applied
#5 lore raw
In reply to Longbin Li
Quoted 2 lines · Longbin Li

Add top syscon device bindings related DTS change for CV1800.

Applied to dt/riscv, thanks!

[1/3] dt-bindings: soc: sophgo: add TOP syscon for CV18XX/SG200X series SoC

      https://github.com/sophgo/linux/commit/565c450124c105a0b4f4ff3265e19502d44bf23b
[2/3] riscv: dts: sophgo: Add syscon node for cv18xx
      https://github.com/sophgo/linux/commit/126a1b3c61cbec15ffaadf141adb9c4163da1757
[3/3] riscv: dts: sophgo: Add USB support for cv18xx
      https://github.com/sophgo/linux/commit/e307248a3c2df4432a7bbbde306ffcb33ec55898

Thanks,
Inochi