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* [PATCH v2] ARM: dts: imx51: Fix USB PHY duplicate unit-address
@ 2018-06-28 18:41 Fabio Estevam
  2018-07-03  6:09 ` Shawn Guo
  0 siblings, 1 reply; 2+ messages in thread
From: Fabio Estevam @ 2018-06-28 18:41 UTC (permalink / raw)
  To: linux-arm-kernel

From: Fabio Estevam <fabio.estevam@nxp.com>

Currently the following DTC warnings are seen with W=1:

arch/arm/boot/dts/imx51-babbage.dtb: Warning (unique_unit_address): /usbphy/usbphy at 0: duplicate unit-address (also used in node /usbphy/usbh1phy at 0)
arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dtb: Warning (unique_unit_address): /usbphy/usbphy at 0: duplicate unit-address (also used in node /usbphy/usbh1phy at 0)

Fix it by moving the USB PHY nodes outside of simple-bus and drop the
unneeded unit-address, which matches the bindings documentation
at Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
---
Changes since v1:
- Make it a single patch including the imx51.dtsi change (Shawn)

 arch/arm/boot/dts/imx51-babbage.dts                 | 21 +++++++--------------
 .../boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts   | 19 ++++++-------------
 arch/arm/boot/dts/imx51.dtsi                        | 17 +++++------------
 3 files changed, 18 insertions(+), 39 deletions(-)

diff --git a/arch/arm/boot/dts/imx51-babbage.dts b/arch/arm/boot/dts/imx51-babbage.dts
index b8ca73d..de46906 100644
--- a/arch/arm/boot/dts/imx51-babbage.dts
+++ b/arch/arm/boot/dts/imx51-babbage.dts
@@ -170,20 +170,13 @@
 		mux-ext-port = <3>;
 	};
 
-	usbphy {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		compatible = "simple-bus";
-
-		usbh1phy: usbh1phy at 0 {
-			compatible = "usb-nop-xceiv";
-			reg = <0>;
-			clocks = <&clk_usb>;
-			clock-names = "main_clk";
-			reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
-			vcc-supply = <&vusb_reg>;
-			#phy-cells = <0>;
-		};
+	usbh1phy: usbh1phy1 {
+		compatible = "usb-nop-xceiv";
+		clocks = <&clk_usb>;
+		clock-names = "main_clk";
+		reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
+		vcc-supply = <&vusb_reg>;
+		#phy-cells = <0>;
 	};
 };
 
diff --git a/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts b/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts
index b3d952f..2320464 100644
--- a/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts
+++ b/arch/arm/boot/dts/imx51-eukrea-mbimxsd51-baseboard.dts
@@ -83,19 +83,12 @@
 		fsl,mux-ext-port = <3>;
 	};
 
-	usbphy {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		compatible = "simple-bus";
-
-		usbh1phy: usbh1phy at 0 {
-			compatible = "usb-nop-xceiv";
-			reg = <0>;
-			clocks = <&clks IMX5_CLK_USB_PHY_GATE>;
-			clock-names = "main_clk";
-			clock-frequency = <19200000>;
-			#phy-cells = <0>;
-		};
+	usbh1phy: usbh1phy {
+		compatible = "usb-nop-xceiv";
+		clocks = <&clks IMX5_CLK_USB_PHY_GATE>;
+		clock-names = "main_clk";
+		clock-frequency = <19200000>;
+		#phy-cells = <0>;
 	};
 };
 
diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
index fe01b89..89520c1 100644
--- a/arch/arm/boot/dts/imx51.dtsi
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -93,18 +93,11 @@
 		};
 	};
 
-	usbphy {
-		#address-cells = <1>;
-		#size-cells = <0>;
-		compatible = "simple-bus";
-
-		usbphy0: usbphy at 0 {
-			compatible = "usb-nop-xceiv";
-			reg = <0>;
-			clocks = <&clks IMX5_CLK_USB_PHY_GATE>;
-			clock-names = "main_clk";
-			#phy-cells = <0>;
-		};
+	usbphy0: usbphy0 {
+		compatible = "usb-nop-xceiv";
+		clocks = <&clks IMX5_CLK_USB_PHY_GATE>;
+		clock-names = "main_clk";
+		#phy-cells = <0>;
 	};
 
 	display-subsystem {
-- 
2.7.4

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2018-06-28 18:41 [PATCH v2] ARM: dts: imx51: Fix USB PHY duplicate unit-address Fabio Estevam
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