diff mbox

[4/4] ARM: dts: refactor Odroid DTS file and add support for Odroid X2 and U2/U3

Message ID 1402997133-13827-5-git-send-email-m.szyprowski@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Marek Szyprowski June 17, 2014, 9:25 a.m. UTC 
This patch moves some parts of exynos4412-odroidx.dts to common
exynos4412-odroid-common.dtsi file and adds support for Odroid X2 and
U2/U3 boards. X2 is same as X, but it has faster SoC module (1.7GHz
instead of 1.4GHz), while U2/U3 differs from X2 by different way of
routing signals to host USB hub. It also lacks some hw modules not yet
supported by those dts files (i.e. LCD & touch panel).

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 arch/arm/boot/dts/Makefile                      |   2 +
 arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 319 +++++++++++++++++++++++
 arch/arm/boot/dts/exynos4412-odroidu3.dts       |  49 ++++
 arch/arm/boot/dts/exynos4412-odroidx.dts        | 329 +-----------------------
 arch/arm/boot/dts/exynos4412-odroidx2.dts       |  23 ++
 5 files changed, 400 insertions(+), 322 deletions(-)
 create mode 100644 arch/arm/boot/dts/exynos4412-odroid-common.dtsi
 create mode 100644 arch/arm/boot/dts/exynos4412-odroidu3.dts
 create mode 100644 arch/arm/boot/dts/exynos4412-odroidx2.dts

Comments

Daniel Drake June 19, 2014, 12:43 p.m. UTC | #1 
On Tue, Jun 17, 2014 at 10:25 AM, Marek Szyprowski
<m.szyprowski@samsung.com> wrote:
> This patch moves some parts of exynos4412-odroidx.dts to common
> exynos4412-odroid-common.dtsi file and adds support for Odroid X2 and
> U2/U3 boards. X2 is same as X, but it has faster SoC module (1.7GHz
> instead of 1.4GHz), while U2/U3 differs from X2 by different way of
> routing signals to host USB hub. It also lacks some hw modules not yet
> supported by those dts files (i.e. LCD & touch panel).

Thanks for this! It is working on ODROID-U2: at least eMMC/SD, LED, serial.

Just 2 minor questions from reviewing:

Odroid-X DTS used to have serial ports at 13820000 and 13830000, this
patch removes them, but leaves 2.
I can understand the idea of removing entries for ports that are not
available on the board, but I've never seen an ODROID with 2 serial
ports - should we bring this down to just the 1 enabled serial port
that is accessible?

Odroid-X DTS used to enable EHCI port 2, but with this refactoring, no
longer does. Intentional?

Thanks
Daniel
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Marek Szyprowski June 24, 2014, 11:47 a.m. UTC | #2 
Hello,

On 2014-06-19 14:43, Daniel Drake wrote:
> On Tue, Jun 17, 2014 at 10:25 AM, Marek Szyprowski
> <m.szyprowski@samsung.com> wrote:
>> This patch moves some parts of exynos4412-odroidx.dts to common
>> exynos4412-odroid-common.dtsi file and adds support for Odroid X2 and
>> U2/U3 boards. X2 is same as X, but it has faster SoC module (1.7GHz
>> instead of 1.4GHz), while U2/U3 differs from X2 by different way of
>> routing signals to host USB hub. It also lacks some hw modules not yet
>> supported by those dts files (i.e. LCD & touch panel).
> Thanks for this! It is working on ODROID-U2: at least eMMC/SD, LED, serial.
>
> Just 2 minor questions from reviewing:
>
> Odroid-X DTS used to have serial ports at 13820000 and 13830000, this
> patch removes them, but leaves 2.

Right. I've forgot the UART port change. Now I've checked it again and
schematics reveals that Odroid X/X2 and U2/U3 has UART1 available on UART
connector. On the other hand U2/U3 have UART0 RX/TX lines on GPIO connector,
while X/X2 has UART3 lines on the LCD/GPIO connector.

> I can understand the idea of removing entries for ports that are not
> available on the board, but I've never seen an ODROID with 2 serial
> ports - should we bring this down to just the 1 enabled serial port
> that is accessible?

That would be best solution, but this way the tty driver name will change
from ttySAC1 to ttySAC0 for UART1 port. Until uart driver gets fixed, I
would keep all 4 uart defined on X/X2 and define only uart 0 and 1 on
U2/U3. I will fix this in the next version of Odroid patches.

> Odroid-X DTS used to enable EHCI port 2, but with this refactoring, no
> longer does. Intentional?

This was a bug in the initial patch adding usb support. X and X2 uses only
HSCI0 port (ehci port 1).

Thanks for your review!

Best regards
Tomasz Figa June 25, 2014, 10:15 p.m. UTC | #3 
Hi Marek, Daniel,

On 24.06.2014 13:47, Marek Szyprowski wrote:
> Hello,
> 
> On 2014-06-19 14:43, Daniel Drake wrote:
>> On Tue, Jun 17, 2014 at 10:25 AM, Marek Szyprowski
>> <m.szyprowski@samsung.com> wrote:
>>> This patch moves some parts of exynos4412-odroidx.dts to common
>>> exynos4412-odroid-common.dtsi file and adds support for Odroid X2 and
>>> U2/U3 boards. X2 is same as X, but it has faster SoC module (1.7GHz
>>> instead of 1.4GHz), while U2/U3 differs from X2 by different way of
>>> routing signals to host USB hub. It also lacks some hw modules not yet
>>> supported by those dts files (i.e. LCD & touch panel).
>> Thanks for this! It is working on ODROID-U2: at least eMMC/SD, LED,
>> serial.
>>
>> Just 2 minor questions from reviewing:
>>
>> Odroid-X DTS used to have serial ports at 13820000 and 13830000, this
>> patch removes them, but leaves 2.
> 
> Right. I've forgot the UART port change. Now I've checked it again and
> schematics reveals that Odroid X/X2 and U2/U3 has UART1 available on UART
> connector. On the other hand U2/U3 have UART0 RX/TX lines on GPIO
> connector,
> while X/X2 has UART3 lines on the LCD/GPIO connector.
> 
>> I can understand the idea of removing entries for ports that are not
>> available on the board, but I've never seen an ODROID with 2 serial
>> ports - should we bring this down to just the 1 enabled serial port
>> that is accessible?
> 
> That would be best solution, but this way the tty driver name will change
> from ttySAC1 to ttySAC0 for UART1 port. Until uart driver gets fixed, I
> would keep all 4 uart defined on X/X2 and define only uart 0 and 1 on
> U2/U3. I will fix this in the next version of Odroid patches.

I managed to code port ID look-up from DT aliases today. I'll try to
polish the patches a bit more and send them to ML tomorrow. With this,
the problem should be fixed.

Best regards,
Tomasz
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diff mbox

Patch

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 5986ff63b901..28b354936685 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -66,7 +66,9 @@  dtb-$(CONFIG_ARCH_EXYNOS) += exynos4210-origen.dtb \
 	exynos4210-smdkv310.dtb \
 	exynos4210-trats.dtb \
 	exynos4210-universal_c210.dtb \
+	exynos4412-odroidu3.dtb \
 	exynos4412-odroidx.dtb \
+	exynos4412-odroidx2.dtb \
 	exynos4412-origen.dtb \
 	exynos4412-smdk4412.dtb \
 	exynos4412-tiny4412.dtb \
diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
new file mode 100644
index 000000000000..f793f3b8f0b9
--- /dev/null
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -0,0 +1,319 @@ 
+/*
+ * Common definition for Hardkernel's Exynos4412 based ODROID-X/X2/U2/U3 boards
+ * device tree source
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include "exynos4412.dtsi"
+
+/ {
+	firmware@0204F000 {
+		compatible = "samsung,secure-firmware";
+		reg = <0x0204F000 0x1000>;
+	};
+
+	mmc@12550000 {
+		pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
+		pinctrl-names = "default";
+		vmmc-supply = <&ldo20_reg &buck8_reg>;
+		status = "okay";
+
+		num-slots = <1>;
+		supports-highspeed;
+		broken-cd;
+		card-detect-delay = <200>;
+		samsung,dw-mshc-ciu-div = <3>;
+		samsung,dw-mshc-sdr-timing = <2 3>;
+		samsung,dw-mshc-ddr-timing = <1 2>;
+
+		slot@0 {
+			reg = <0>;
+			bus-width = <8>;
+		};
+	};
+
+	watchdog@10060000 {
+		status = "okay";
+	};
+
+	rtc@10070000 {
+		status = "okay";
+	};
+
+	g2d@10800000 {
+		status = "okay";
+	};
+
+	camera {
+		status = "okay";
+		pinctrl-names = "default";
+		pinctrl-0 = <>;
+
+		fimc_0: fimc@11800000 {
+			status = "okay";
+		};
+
+		fimc_1: fimc@11810000 {
+			status = "okay";
+		};
+
+		fimc_2: fimc@11820000 {
+			status = "okay";
+		};
+
+		fimc_3: fimc@11830000 {
+			status = "okay";
+		};
+	};
+
+	sdhci@12530000 {
+		bus-width = <4>;
+		pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
+		pinctrl-names = "default";
+		vmmc-supply = <&ldo4_reg &ldo21_reg>;
+		status = "okay";
+	};
+
+	serial@13800000 {
+		status = "okay";
+	};
+
+	serial@13810000 {
+		status = "okay";
+	};
+
+	fixed-rate-clocks {
+		xxti {
+			compatible = "samsung,clock-xxti";
+			clock-frequency = <0>;
+		};
+
+		xusbxti {
+			compatible = "samsung,clock-xusbxti";
+			clock-frequency = <24000000>;
+		};
+	};
+
+	i2c@13860000 {
+		pinctrl-0 = <&i2c0_bus>;
+		pinctrl-names = "default";
+		status = "okay";
+
+		usb3503: usb3503@08 {
+			compatible = "smsc,usb3503";
+			reg = <0x08>;
+
+			intn-gpios = <&gpx3 0 0>;
+			connect-gpios = <&gpx3 4 0>;
+			reset-gpios = <&gpx3 5 0>;
+			initial-mode = <1>;
+		};
+
+		max77686: pmic@09 {
+			compatible = "maxim,max77686";
+			reg = <0x09>;
+			#clock-cells = <1>;
+
+			voltage-regulators {
+				ldo1_reg: LDO1 {
+					regulator-name = "VDD_ALIVE_1.0V";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+				};
+
+				ldo2_reg: LDO2 {
+					regulator-name = "VDDQ_M1_2_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+				};
+
+				ldo3_reg: LDO3 {
+					regulator-name = "VDDQ_EXT_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+				};
+
+				ldo4_reg: LDO4 {
+					regulator-name = "VDDQ_MMC2_2.8V";
+					regulator-min-microvolt = <2800000>;
+					regulator-max-microvolt = <2800000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				ldo5_reg: LDO5 {
+					regulator-name = "VDDQ_MMC1_3_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				ldo6_reg: LDO6 {
+					regulator-name = "VDD10_MPLL_1.0V";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+				};
+
+				ldo7_reg: LDO7 {
+					regulator-name = "VDD10_XPLL_1.0V";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+				};
+
+				ldo11_reg: LDO11 {
+					regulator-name = "VDD18_ABB1_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+				};
+
+				ldo12_reg: LDO12 {
+					regulator-name = "VDD33_USB_3.3V";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				ldo13_reg: LDO13 {
+					regulator-name = "VDDQ_C2C_W_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				ldo14_reg: LDO14 {
+					regulator-name = "VDD18_ABB0_2_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				ldo15_reg: LDO15 {
+					regulator-name = "VDD10_HSIC_1.0V";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				ldo16_reg: LDO16 {
+					regulator-name = "VDD18_HSIC_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				ldo20_reg: LDO20 {
+					regulator-name = "LDO20_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-boot-on;
+				};
+
+				ldo21_reg: LDO21 {
+					regulator-name = "LDO21_3.3V";
+					regulator-min-microvolt = <3300000>;
+					regulator-max-microvolt = <3300000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				ldo25_reg: LDO25 {
+					regulator-name = "VDDQ_LCD_1.8V";
+					regulator-min-microvolt = <1800000>;
+					regulator-max-microvolt = <1800000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				buck1_reg: BUCK1 {
+					regulator-name = "vdd_mif";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				buck2_reg: BUCK2 {
+					regulator-name = "vdd_arm";
+					regulator-min-microvolt = <900000>;
+					regulator-max-microvolt = <1350000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				buck3_reg: BUCK3 {
+					regulator-name = "vdd_int";
+					regulator-min-microvolt = <1000000>;
+					regulator-max-microvolt = <1000000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				buck4_reg: BUCK4 {
+					regulator-name = "vdd_g3d";
+					regulator-min-microvolt = <900000>;
+					regulator-max-microvolt = <1100000>;
+					regulator-microvolt-offset = <50000>;
+				};
+
+				buck5_reg: BUCK5 {
+					regulator-name = "VDDQ_CKEM1_2_1.2V";
+					regulator-min-microvolt = <1200000>;
+					regulator-max-microvolt = <1200000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				buck6_reg: BUCK6 {
+					regulator-name = "BUCK6_1.35V";
+					regulator-min-microvolt = <1350000>;
+					regulator-max-microvolt = <1350000>;
+					regulator-always-on;
+					regulator-boot-on;
+				};
+
+				buck7_reg: BUCK7 {
+					regulator-name = "BUCK7_2.0V";
+					regulator-min-microvolt = <2000000>;
+					regulator-max-microvolt = <2000000>;
+					regulator-always-on;
+				};
+
+				buck8_reg: BUCK8 {
+					regulator-name = "BUCK8_2.8V";
+					regulator-min-microvolt = <2800000>;
+					regulator-max-microvolt = <2800000>;
+					regulator-always-on;
+				};
+			};
+		};
+	};
+
+	exynos-usbphy@125B0000 {
+		status = "okay";
+	};
+
+	hsotg@12480000 {
+		status = "okay";
+		vusb_d-supply = <&ldo15_reg>;
+		vusb_a-supply = <&ldo12_reg>;
+	};
+
+	ehci: ehci@12580000 {
+		status = "okay";
+	};
+};
diff --git a/arch/arm/boot/dts/exynos4412-odroidu3.dts b/arch/arm/boot/dts/exynos4412-odroidu3.dts
new file mode 100644
index 000000000000..b89408ea9efc
--- /dev/null
+++ b/arch/arm/boot/dts/exynos4412-odroidu3.dts
@@ -0,0 +1,49 @@ 
+/*
+ * Hardkernel's Exynos4412 based ODROID-U3 board device tree source
+ *
+ * Copyright (c) 2014 Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * Device tree source file for Hardkernel's ODROID-U3 board which is based
+ * on Samsung's Exynos4412 SoC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+/dts-v1/;
+#include "exynos4412-odroid-common.dtsi"
+
+/ {
+	model = "Hardkernel ODROID-U3 board based on Exynos4412";
+	compatible = "hardkernel,odroid-u3", "samsung,exynos4412", "samsung,exynos4";
+
+	memory {
+		reg = <0x40000000 0x80000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		led1 {
+			label = "led1:heart";
+			gpios = <&gpc1 0 1>;
+			default-state = "on";
+			linux,default-trigger = "heartbeat";
+		};
+	};
+};
+
+&usb3503 {
+	clock-names = "refclk";
+	clocks = <&pmu_system_controller 0>;
+	refclk-frequency = <24000000>;
+};
+
+&ehci {
+	port@1 {
+		status = "okay";
+	};
+	port@2 {
+		status = "okay";
+	};
+};
diff --git a/arch/arm/boot/dts/exynos4412-odroidx.dts b/arch/arm/boot/dts/exynos4412-odroidx.dts
index 1a067cc00072..9711b6dcfbcc 100644
--- a/arch/arm/boot/dts/exynos4412-odroidx.dts
+++ b/arch/arm/boot/dts/exynos4412-odroidx.dts
@@ -3,8 +3,8 @@ 
  *
  * Copyright (c) 2012 Dongjin Kim <tobetter@gmail.com>
  *
- * Device tree source file for Hardkernel's ODROID-X board which is based on
- * Samsung's Exynos4412 SoC.
+ * Device tree source file for Hardkernel's ODROID-X board which is based
+ * on Samsung's Exynos4412 SoC.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -12,7 +12,7 @@ 
 */
 
 /dts-v1/;
-#include "exynos4412.dtsi"
+#include "exynos4412-odroid-common.dtsi"
 
 / {
 	model = "Hardkernel ODROID-X board based on Exynos4412";
@@ -22,11 +22,6 @@ 
 		reg = <0x40000000 0x40000000>;
 	};
 
-	firmware@0204F000 {
-		compatible = "samsung,secure-firmware";
-		reg = <0x0204F000 0x1000>;
-	};
-
 	leds {
 		compatible = "gpio-leds";
 		led1 {
@@ -43,26 +38,6 @@ 
 		};
 	};
 
-	mmc@12550000 {
-		pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
-		pinctrl-names = "default";
-		vmmc-supply = <&ldo20_reg &buck8_reg>;
-		status = "okay";
-
-		num-slots = <1>;
-		supports-highspeed;
-		broken-cd;
-		card-detect-delay = <200>;
-		samsung,dw-mshc-ciu-div = <3>;
-		samsung,dw-mshc-sdr-timing = <2 3>;
-		samsung,dw-mshc-ddr-timing = <1 2>;
-
-		slot@0 {
-			reg = <0>;
-			bus-width = <8>;
-		};
-	};
-
 	regulator_p3v3 {
 		compatible = "regulator-fixed";
 		regulator-name = "p3v3_en";
@@ -70,302 +45,12 @@ 
 		regulator-max-microvolt = <3300000>;
 		gpio = <&gpa1 1 1>;
 		enable-active-high;
-		regulator-boot-on;
-	};
-
-	watchdog@10060000 {
-		status = "okay";
-	};
-
-	rtc@10070000 {
-		status = "okay";
-	};
-
-	g2d@10800000 {
-		status = "okay";
-	};
-
-	camera {
-		status = "okay";
-		pinctrl-names = "default";
-		pinctrl-0 = <>;
-
-		fimc_0: fimc@11800000 {
-			status = "okay";
-		};
-
-		fimc_1: fimc@11810000 {
-			status = "okay";
-		};
-
-		fimc_2: fimc@11820000 {
-			status = "okay";
-		};
-
-		fimc_3: fimc@11830000 {
-			status = "okay";
-		};
-	};
-
-	sdhci@12530000 {
-		bus-width = <4>;
-		pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;
-		pinctrl-names = "default";
-		vmmc-supply = <&ldo4_reg &ldo21_reg>;
-		status = "okay";
-	};
-
-	serial@13800000 {
-		status = "okay";
-	};
-
-	serial@13810000 {
-		status = "okay";
-	};
-
-	serial@13820000 {
-		status = "okay";
-	};
-
-	serial@13830000 {
-		status = "okay";
-	};
-
-	fixed-rate-clocks {
-		xxti {
-			compatible = "samsung,clock-xxti";
-			clock-frequency = <0>;
-		};
-
-		xusbxti {
-			compatible = "samsung,clock-xusbxti";
-			clock-frequency = <24000000>;
-		};
-	};
-
-	i2c@13860000 {
-		pinctrl-0 = <&i2c0_bus>;
-		pinctrl-names = "default";
-		status = "okay";
-
-		usb3503@08 {
-			compatible = "smsc,usb3503";
-			reg = <0x08>;
-
-			intn-gpios = <&gpx3 0 0>;
-			connect-gpios = <&gpx3 4 0>;
-			reset-gpios = <&gpx3 5 0>;
-			initial-mode = <1>;
-		};
-
-		max77686: pmic@09 {
-			compatible = "maxim,max77686";
-			reg = <0x09>;
-			#clock-cells = <1>;
-
-			voltage-regulators {
-				ldo1_reg: LDO1 {
-					regulator-name = "VDD_ALIVE_1.0V";
-					regulator-min-microvolt = <1000000>;
-					regulator-max-microvolt = <1000000>;
-					regulator-always-on;
-				};
-
-				ldo2_reg: LDO2 {
-					regulator-name = "VDDQ_M1_2_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-always-on;
-				};
-
-				ldo3_reg: LDO3 {
-					regulator-name = "VDDQ_EXT_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-always-on;
-				};
-
-				ldo4_reg: LDO4 {
-					regulator-name = "VDDQ_MMC2_2.8V";
-					regulator-min-microvolt = <2800000>;
-					regulator-max-microvolt = <2800000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				ldo5_reg: LDO5 {
-					regulator-name = "VDDQ_MMC1_3_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				ldo6_reg: LDO6 {
-					regulator-name = "VDD10_MPLL_1.0V";
-					regulator-min-microvolt = <1000000>;
-					regulator-max-microvolt = <1000000>;
-					regulator-always-on;
-				};
-
-				ldo7_reg: LDO7 {
-					regulator-name = "VDD10_XPLL_1.0V";
-					regulator-min-microvolt = <1000000>;
-					regulator-max-microvolt = <1000000>;
-					regulator-always-on;
-				};
-
-				ldo11_reg: LDO11 {
-					regulator-name = "VDD18_ABB1_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-always-on;
-				};
-
-				ldo12_reg: LDO12 {
-					regulator-name = "VDD33_USB_3.3V";
-					regulator-min-microvolt = <3300000>;
-					regulator-max-microvolt = <3300000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				ldo13_reg: LDO13 {
-					regulator-name = "VDDQ_C2C_W_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				ldo14_reg: LDO14 {
-					regulator-name = "VDD18_ABB0_2_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				ldo15_reg: LDO15 {
-					regulator-name = "VDD10_HSIC_1.0V";
-					regulator-min-microvolt = <1000000>;
-					regulator-max-microvolt = <1000000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				ldo16_reg: LDO16 {
-					regulator-name = "VDD18_HSIC_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				ldo20_reg: LDO20 {
-					regulator-name = "LDO20_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-boot-on;
-				};
-
-				ldo21_reg: LDO21 {
-					regulator-name = "LDO21_3.3V";
-					regulator-min-microvolt = <3300000>;
-					regulator-max-microvolt = <3300000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				ldo25_reg: LDO25 {
-					regulator-name = "VDDQ_LCD_1.8V";
-					regulator-min-microvolt = <1800000>;
-					regulator-max-microvolt = <1800000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				buck1_reg: BUCK1 {
-					regulator-name = "vdd_mif";
-					regulator-min-microvolt = <1000000>;
-					regulator-max-microvolt = <1000000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				buck2_reg: BUCK2 {
-					regulator-name = "vdd_arm";
-					regulator-min-microvolt = <900000>;
-					regulator-max-microvolt = <1350000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				buck3_reg: BUCK3 {
-					regulator-name = "vdd_int";
-					regulator-min-microvolt = <1000000>;
-					regulator-max-microvolt = <1000000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				buck4_reg: BUCK4 {
-					regulator-name = "vdd_g3d";
-					regulator-min-microvolt = <900000>;
-					regulator-max-microvolt = <1100000>;
-					regulator-microvolt-offset = <50000>;
-				};
-
-				buck5_reg: BUCK5 {
-					regulator-name = "VDDQ_CKEM1_2_1.2V";
-					regulator-min-microvolt = <1200000>;
-					regulator-max-microvolt = <1200000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				buck6_reg: BUCK6 {
-					regulator-name = "BUCK6_1.35V";
-					regulator-min-microvolt = <1350000>;
-					regulator-max-microvolt = <1350000>;
-					regulator-always-on;
-					regulator-boot-on;
-				};
-
-				buck7_reg: BUCK7 {
-					regulator-name = "BUCK7_2.0V";
-					regulator-min-microvolt = <2000000>;
-					regulator-max-microvolt = <2000000>;
-					regulator-always-on;
-				};
-
-				buck8_reg: BUCK8 {
-					regulator-name = "BUCK8_2.8V";
-					regulator-min-microvolt = <2800000>;
-					regulator-max-microvolt = <2800000>;
-					regulator-always-on;
-				};
-			};
-		};
-	};
-
-	exynos-usbphy@125B0000 {
-		status = "okay";
-	};
-
-	hsotg@12480000 {
-		status = "okay";
-		vusb_d-supply = <&ldo15_reg>;
-		vusb_a-supply = <&ldo12_reg>;
+		regulator-always-on;
 	};
+};
 
-	ehci@12580000 {
+&ehci {
+	port@1 {
 		status = "okay";
-		port@1 {
-			status = "okay";
-		};
-		port@2 {
-			status = "okay";
-		};
 	};
 };
diff --git a/arch/arm/boot/dts/exynos4412-odroidx2.dts b/arch/arm/boot/dts/exynos4412-odroidx2.dts
new file mode 100644
index 000000000000..5b934dd2af35
--- /dev/null
+++ b/arch/arm/boot/dts/exynos4412-odroidx2.dts
@@ -0,0 +1,23 @@ 
+/*
+ * Hardkernel's Exynos4412 based ODROID-X2 board device tree source
+ *
+ * Copyright (c) 2012 Dongjin Kim <tobetter@gmail.com>
+ *
+ * Device tree source file for Hardkernel's ODROID-X2 board which is based
+ * on Samsung's Exynos4412 SoC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include "exynos4412-odroidx.dts"
+
+/ {
+	model = "Hardkernel ODROID-X2 board based on Exynos4412";
+	compatible = "hardkernel,odroid-x2", "samsung,exynos4412", "samsung,exynos4";
+
+	memory {
+		reg = <0x40000000 0x80000000>;
+	};
+};