linux-kernel - [PATCH v2 1/5] ARM: dts: lpc32xx: remove usb bus and elevate all children nodes

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Message-Id: <20251114174712.1206027-1-Frank.Li@nxp.com>
Date: Fri, 14 Nov 2025 12:47:08 -0500
From: Frank Li <Frank.Li@....com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Vladimir Zapolskiy <vz@...ia.com>,
	Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM/LPC32XX SOC SUPPORT),
	linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev
Subject: [PATCH v2 1/5] ARM: dts: lpc32xx: remove usb bus and elevate all children nodes

Remove usb bus and elevate all children nodes because usb bus is not
existed and only group usb devices logically.

Update register address and related full node name.

Fix below CHECK_DTBS warnings:
arm/boot/dts/nxp/lpc/lpc3250-ea3250.dtb: usb (simple-bus): $nodename:0: 'usb' does not match '^([a-z][a-z0-9\\-]+-bus|bus|localbus|soc|axi|ahb|apb)(@.+)?$'
        from schema $id: http://devicetree.org/schemas/simple-bus.yaml#

Signed-off-by: Frank Li <Frank.Li@....com>
---
change in v2
- elevate usb children node
- fab leave unchange now utils finish discussion.
---
 arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi | 77 ++++++++++++--------------
 1 file changed, 35 insertions(+), 42 deletions(-)

diff --git a/arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi b/arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi
index 4dff0d7694322..d6243adbc05bc 100644
--- a/arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi
+++ b/arch/arm/boot/dts/nxp/lpc/lpc32xx.dtsi
@@ -86,51 +86,44 @@ dma: dma-controller@...00000 {
 			#dma-cells = <2>;
 		};
 
-		usb {
-			#address-cells = <1>;
-			#size-cells = <1>;
-			compatible = "simple-bus";
-			ranges = <0x0 0x31020000 0x00001000>;
-
-			/*
-			 * Enable either ohci or usbd (gadget)!
-			 */
-			ohci: usb@0 {
-				compatible = "nxp,ohci-nxp", "usb-ohci";
-				reg = <0x0 0x300>;
-				interrupt-parent = <&sic1>;
-				interrupts = <27 IRQ_TYPE_LEVEL_HIGH>;
-				clocks = <&usbclk LPC32XX_USB_CLK_HOST>;
-				status = "disabled";
-			};
+		/*
+		 * Enable either ohci or usbd (gadget)!
+		 */
+		ohci: usb@...20000 {
+			compatible = "nxp,ohci-nxp", "usb-ohci";
+			reg = <0x31020000 0x300>;
+			interrupt-parent = <&sic1>;
+			interrupts = <27 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&usbclk LPC32XX_USB_CLK_HOST>;
+			status = "disabled";
+		};
 
-			usbd: usbd@0 {
-				compatible = "nxp,lpc3220-udc";
-				reg = <0x0 0x300>;
-				interrupt-parent = <&sic1>;
-				interrupts = <29 IRQ_TYPE_LEVEL_HIGH>,
-					     <30 IRQ_TYPE_LEVEL_HIGH>,
-					     <28 IRQ_TYPE_LEVEL_HIGH>,
-					     <26 IRQ_TYPE_LEVEL_LOW>;
-				clocks = <&usbclk LPC32XX_USB_CLK_DEVICE>;
-				status = "disabled";
-			};
+		usbd: usbd@...20000 {
+			compatible = "nxp,lpc3220-udc";
+			reg = <0x31020000 0x300>;
+			interrupt-parent = <&sic1>;
+			interrupts = <29 IRQ_TYPE_LEVEL_HIGH>,
+				     <30 IRQ_TYPE_LEVEL_HIGH>,
+				     <28 IRQ_TYPE_LEVEL_HIGH>,
+				     <26 IRQ_TYPE_LEVEL_LOW>;
+			clocks = <&usbclk LPC32XX_USB_CLK_DEVICE>;
+			status = "disabled";
+		};
 
-			i2cusb: i2c@300 {
-				compatible = "nxp,pnx-i2c";
-				reg = <0x300 0x100>;
-				interrupt-parent = <&sic1>;
-				interrupts = <31 IRQ_TYPE_LEVEL_HIGH>;
-				clocks = <&usbclk LPC32XX_USB_CLK_I2C>;
-				#address-cells = <1>;
-				#size-cells = <0>;
-			};
+		i2cusb: i2c@...20300 {
+			compatible = "nxp,pnx-i2c";
+			reg = <0x31020300 0x100>;
+			interrupt-parent = <&sic1>;
+			interrupts = <31 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&usbclk LPC32XX_USB_CLK_I2C>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
 
-			usbclk: clock-controller@f00 {
-				compatible = "nxp,lpc3220-usb-clk";
-				reg = <0xf00 0x100>;
-				#clock-cells = <1>;
-			};
+		usbclk: clock-controller@...20f00 {
+			compatible = "nxp,lpc3220-usb-clk";
+			reg = <0x31020f00 0x100>;
+			#clock-cells = <1>;
 		};
 
 		clcd: clcd@...40000 {
-- 
2.34.1