[PATCH v5 3/3] arm64: dts: cix: Add USB3 PHY nodes for Sky1

Hongliang Yang (杨宏亮) hongliang.yang at cixtech.com
Mon Nov 2 23:49:24 PST 2026


Add the USB3 PHY node for the CIX Sky1 SoC and enable both PHY ports
on the Radxa Orion O6 board.

Signed-off-by: Hongliang Yang <hongliang.yang at cixtech.com>
---
v4 -> v5:
- Fixed the #size-cells property order in the PHY node.
- Removed the unused phy.h include.
- Dropped the redundant status properties of the PHY port nodes and
  the corresponding board overrides.
 arch/arm64/boot/dts/cix/sky1-orion-o6.dts |  4 ++++
 arch/arm64/boot/dts/cix/sky1.dtsi         | 25 +++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/arch/arm64/boot/dts/cix/sky1-orion-o6.dts b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
index e39c87774c12..5d57dd9ea299 100644
--- a/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
+++ b/arch/arm64/boot/dts/cix/sky1-orion-o6.dts
@@ -117,3 +117,7 @@ &s5_gpio2 {
 &uart2 {
 	status = "okay";
 };
+
+&usb3_phy4 {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/cix/sky1.dtsi b/arch/arm64/boot/dts/cix/sky1.dtsi
index 0a820f45feb9..06a311ee14ef 100644
--- a/arch/arm64/boot/dts/cix/sky1.dtsi
+++ b/arch/arm64/boot/dts/cix/sky1.dtsi
@@ -606,6 +606,31 @@ mbox_ap2sfh: mailbox at 80a0000 {
 			cix,mbox-dir = "tx";
 		};
 
+		usb3_phy4: usb-phy at 9210000 {
+			compatible = "cix,sky1-usb3-phy";
+			reg = <0x00 0x09210000 0x00 0x40000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&scmi_clk CLK_TREE_USB3A_PHY3_GATE>,
+				<&scmi_clk CLK_TREE_USB3A_PHY_x2_REF>;
+			clock-names = "apb", "ref";
+			resets = <&s5_syscon SKY1_USBPHY_SS_RST_N>,
+				<&s5_syscon SKY1_USBPHY_SS_PST_N>;
+			reset-names = "core", "apb";
+
+			status = "disabled";
+
+			usb3_phy4_0: usb-port at 0 {
+				reg = <0>;
+				#phy-cells = <0>;
+			};
+
+			usb3_phy4_1: usb-port at 1 {
+				reg = <1>;
+				#phy-cells = <0>;
+			};
+		};
+
 		pcie_x8_rc: pcie at a010000 {
 			compatible = "cix,sky1-pcie-host";
 			reg = <0x00 0x0a010000 0x00 0x10000>,
-- 
2.54.0


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