linux-kernel - [PATCH 1/4] arm: dts: imx28: Use phandles instead of unit addresses

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Message-Id: <1512110311-15788-2-git-send-email-venkataravi.e@techveda.org>
Date:   Fri,  1 Dec 2017 12:08:28 +0530
From:   venkataravi.e@...hveda.org
To:     shawnguo@...nel.org, kernel@...gutronix.de, robh+dt@...nel.org,
        mark.rutland@....com, linux@...linux.org.uk
Cc:     fabio.estevam@....com, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        karthik@...hveda.org, shrikant.maurya@...hveda.org,
        Ravi Eluri <venkataravi.e@...hveda.org>,
        Suniel Mahesh <sunil.m@...hveda.org>
Subject: [PATCH 1/4] arm: dts: imx28: Use phandles instead of unit addresses

From: Ravi Eluri <venkataravi.e@...hveda.org>

Unit addresses for all peripherals of imx28 are defined in
the corresponding dtsi file, use phandles instead of unit addresses
to reference peripheral nodes in dts files. This makes the DT more
robust and readable.

Signed-off-by: Ravi Eluri <venkataravi.e@...hveda.org>
Signed-off-by: Suniel Mahesh <sunil.m@...hveda.org>
---
Note:
- This is the first patch of the four patch series.
- Patch was compile tested and built(ARCH=arm, imx28) on linux-next
  (latest).
- No build issues reported.
- Please discard this changeset, if this is not making any better.
---
 arch/arm/boot/dts/imx28-evk.dts | 44 ++++++++++++++++++++---------------------
 1 file changed, 22 insertions(+), 22 deletions(-)

diff --git a/arch/arm/boot/dts/imx28-evk.dts b/arch/arm/boot/dts/imx28-evk.dts
index 7f5b804..21ac4fa 100644
--- a/arch/arm/boot/dts/imx28-evk.dts
+++ b/arch/arm/boot/dts/imx28-evk.dts
@@ -22,14 +22,14 @@
 
 	apb@...00000 {
 		apbh@...00000 {
-			gpmi-nand@...0c000 {
+			&gpmi {
 				pinctrl-names = "default";
 				pinctrl-0 = <&gpmi_pins_a &gpmi_status_cfg
 					     &gpmi_pins_evk>;
 				status = "okay";
 			};
 
-			ssp0: ssp@...10000 {
+			&ssp0 {
 				compatible = "fsl,imx28-mmc";
 				pinctrl-names = "default";
 				pinctrl-0 = <&mmc0_8bit_pins_a
@@ -40,13 +40,13 @@
 				status = "okay";
 			};
 
-			ssp1: ssp@...12000 {
+			&ssp1 {
 				compatible = "fsl,imx28-mmc";
 				bus-width = <8>;
 				wp-gpios = <&gpio0 28 0>;
 			};
 
-			ssp2: ssp@...14000 {
+			&ssp2 {
 				#address-cells = <1>;
 				#size-cells = <0>;
 				compatible = "fsl,imx28-spi";
@@ -63,7 +63,7 @@
 				};
 			};
 
-			pinctrl@...18000 {
+			&pinctrl {
 				pinctrl-names = "default";
 				pinctrl-0 = <&hog_pins_a>;
 
@@ -119,7 +119,7 @@
 				};
 			};
 
-			lcdif@...30000 {
+			&lcdif {
 				pinctrl-names = "default";
 				pinctrl-0 = <&lcdif_24bit_pins_a
 					     &lcdif_pins_evk>;
@@ -152,14 +152,14 @@
 				};
 			};
 
-			can0: can@...32000 {
+			&can0 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&can0_pins_a>;
 				xceiver-supply = <&reg_can_3v3>;
 				status = "okay";
 			};
 
-			can1: can@...34000 {
+			&can1 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&can1_pins_a>;
 				xceiver-supply = <&reg_can_3v3>;
@@ -168,20 +168,20 @@
 		};
 
 		apbx@...40000 {
-			saif0: saif@...42000 {
+			&saif0 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&saif0_pins_a>;
 				status = "okay";
 			};
 
-			saif1: saif@...46000 {
+			&saif1 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&saif1_pins_a>;
 				fsl,saif-master = <&saif0>;
 				status = "okay";
 			};
 
-			lradc@...50000 {
+			&lradc {
 				status = "okay";
 				fsl,lradc-touchscreen-wires = <4>;
 				fsl,ave-ctrl = <4>;
@@ -189,7 +189,7 @@
 				fsl,settling = <10>;
 			};
 
-			i2c0: i2c@...58000 {
+			&i2c0 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&i2c0_pins_a>;
 				status = "okay";
@@ -209,55 +209,55 @@
 				};
 			};
 
-			pwm: pwm@...64000 {
+			&pwm {
 				pinctrl-names = "default";
 				pinctrl-0 = <&pwm2_pins_a>;
 				status = "okay";
 			};
 
-			duart: serial@...74000 {
+			&duart {
 				pinctrl-names = "default";
 				pinctrl-0 = <&duart_pins_a>;
 				status = "okay";
 			};
 
-			auart0: serial@...6a000 {
+			&auart0 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&auart0_pins_a>;
 				uart-has-rtscts;
 				status = "okay";
 			};
 
-			auart3: serial@...70000 {
+			&auart3 {
 				pinctrl-names = "default";
 				pinctrl-0 = <&auart3_pins_a>;
 				status = "okay";
 			};
 
-			usbphy0: usbphy@...7c000 {
+			&usbphy0 {
 				status = "okay";
 			};
 
-			usbphy1: usbphy@...7e000 {
+			&usbphy1 {
 				status = "okay";
 			};
 		};
 	};
 
 	ahb@...80000 {
-		usb0: usb@...80000 {
+		&usb0 {
 			pinctrl-names = "default";
 			pinctrl-0 = <&usb0_id_pins_a>;
 			vbus-supply = <&reg_usb0_vbus>;
 			status = "okay";
 		};
 
-		usb1: usb@...90000 {
+		&usb1 {
 			vbus-supply = <&reg_usb1_vbus>;
 			status = "okay";
 		};
 
-		mac0: ethernet@...f0000 {
+		&mac0 {
 			phy-mode = "rmii";
 			pinctrl-names = "default";
 			pinctrl-0 = <&mac0_pins_a>;
@@ -267,7 +267,7 @@
 			status = "okay";
 		};
 
-		mac1: ethernet@...f4000 {
+		&mac1 {
 			phy-mode = "rmii";
 			pinctrl-names = "default";
 			pinctrl-0 = <&mac1_pins_a>;
-- 
1.9.1