diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6774c80..0555b70 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -996,6 +996,7 @@ config ARCH_VT8500
 	select GENERIC_CLOCKEVENTS
 	select ARCH_REQUIRE_GPIOLIB
 	select HAVE_PWM
+	select USE_OF
 	help
 	  Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
 
@@ -1613,6 +1614,7 @@ config ARCH_NR_GPIO
 	default 355 if ARCH_U8500
 	default 264 if MACH_H4700
 	default 512 if SOC_OMAP5
+	default 288 if ARCH_VT8500
 	default 0
 	help
 	  Maximum number of GPIOs in the system.
diff --git a/arch/arm/mach-vt8500/Kconfig b/arch/arm/mach-vt8500/Kconfig
index 2c20a34..44f9f9d 100644
--- a/arch/arm/mach-vt8500/Kconfig
+++ b/arch/arm/mach-vt8500/Kconfig
@@ -1,73 +1,15 @@
 if ARCH_VT8500
 
-config VTWM_VERSION_VT8500
+config VTWM_VERSION_WMT_DT
 	bool
 
-config VTWM_VERSION_WM8505
-	bool
-
-config MACH_BV07
-	bool "Benign BV07-8500 Mini Netbook"
-	depends on ARCH_VT8500
-	select VTWM_VERSION_VT8500
-	help
-	  Add support for the inexpensive 7-inch netbooks sold by many
-	  Chinese distributors under various names. Note that there are
-	  many hardware implementations in identical exterior, make sure
-	  that yours is indeed based on a VIA VT8500 chip.
-
-config MACH_WM8505_7IN_NETBOOK
-	bool "WM8505 7-inch generic netbook"
+config MACH_WMT_DT
+	bool "VIA/Wondermedia SoC based boards (Device Tree Support)"
 	depends on ARCH_VT8500
-	select VTWM_VERSION_WM8505
-	help
-	  Add support for the inexpensive 7-inch netbooks sold by many
-	  Chinese distributors under various names. Note that there are
-	  many hardware implementations in identical exterior, make sure
-	  that yours is indeed based on a WonderMedia WM8505 chip.
-
-comment "LCD panel size"
-
-config WMT_PANEL_800X480
-	bool "7-inch with 800x480 resolution"
-	depends on (FB_VT8500 || FB_WM8505)
-	default y
-	help
-	  These are found in most of the netbooks in generic cases, as
-	  well as in Eken M001 tablets and possibly elsewhere.
-
-	  To select this panel at runtime, say y here and append
-	  'panel=800x480' to your kernel command line. Otherwise, the
-	  largest one available will be used.
-
-config WMT_PANEL_800X600
-	bool "8-inch with 800x600 resolution"
-	depends on (FB_VT8500 || FB_WM8505)
-	help
-	  These are found in Eken M003 tablets and possibly elsewhere.
-
-	  To select this panel at runtime, say y here and append
-	  'panel=800x600' to your kernel command line. Otherwise, the
-	  largest one available will be used.
-
-config WMT_PANEL_1024X576
-	bool "10-inch with 1024x576 resolution"
-	depends on (FB_VT8500 || FB_WM8505)
+	select VTWM_VERSION_WMT_DT
 	help
-	  These are found in CherryPal netbooks and possibly elsewhere.
-
-	  To select this panel at runtime, say y here and append
-	  'panel=1024x576' to your kernel command line. Otherwise, the
-	  largest one available will be used.
-
-config WMT_PANEL_1024X600
-	bool "10-inch with 1024x600 resolution"
-	depends on (FB_VT8500 || FB_WM8505)
-	help
-	  These are found in Eken M006 tablets and possibly elsewhere.
-
-	  To select this panel at runtime, say y here and append
-	  'panel=1024x600' to your kernel command line. Otherwise, the
-	  largest one available will be used.
+	  Add support for netbooks, tablets and other devices based on
+	  the reference board design as produced by VIA/WonderMedia, using
+	  VT8500/WM8505/WM8650 System-on-Chip.
 
 endif
diff --git a/arch/arm/mach-vt8500/Makefile b/arch/arm/mach-vt8500/Makefile
index 54e6997..1966183 100644
--- a/arch/arm/mach-vt8500/Makefile
+++ b/arch/arm/mach-vt8500/Makefile
@@ -1,9 +1,4 @@
-obj-y += devices.o gpio.o irq.o timer.o restart.o
-
-obj-$(CONFIG_VTWM_VERSION_VT8500) += devices-vt8500.o
-obj-$(CONFIG_VTWM_VERSION_WM8505) += devices-wm8505.o
-
-obj-$(CONFIG_MACH_BV07) += bv07.o
-obj-$(CONFIG_MACH_WM8505_7IN_NETBOOK) += wm8505_7in.o
+obj-$(CONFIG_VTWM_VERSION_WMT_DT) += irq.o timer.o
+obj-$(CONFIG_MACH_WMT_DT) += vt8500.o
 
 obj-$(CONFIG_HAVE_PWM) += pwm.o
diff --git a/arch/arm/mach-vt8500/bv07.c b/arch/arm/mach-vt8500/bv07.c
deleted file mode 100644
index f9fbeb2..0000000
--- a/arch/arm/mach-vt8500/bv07.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- *  arch/arm/mach-vt8500/bv07.c
- *
- *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/io.h>
-#include <linux/pm.h>
-
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-#include <mach/restart.h>
-
-#include "devices.h"
-
-static void __iomem *pmc_hiber;
-
-static struct platform_device *devices[] __initdata = {
-	&vt8500_device_uart0,
-	&vt8500_device_lcdc,
-	&vt8500_device_ehci,
-	&vt8500_device_ge_rops,
-	&vt8500_device_pwm,
-	&vt8500_device_pwmbl,
-	&vt8500_device_rtc,
-};
-
-static void vt8500_power_off(void)
-{
-	local_irq_disable();
-	writew(5, pmc_hiber);
-	asm("mcr%? p15, 0, %0, c7, c0, 4" : : "r" (0));
-}
-
-void __init bv07_init(void)
-{
-#ifdef CONFIG_FB_VT8500
-	void __iomem *gpio_mux_reg = ioremap(wmt_gpio_base + 0x200, 4);
-	if (gpio_mux_reg) {
-		writel(readl(gpio_mux_reg) | 1, gpio_mux_reg);
-		iounmap(gpio_mux_reg);
-	} else {
-		printk(KERN_ERR "Could not remap the GPIO mux register, display may not work properly!\n");
-	}
-#endif
-	pmc_hiber = ioremap(wmt_pmc_base + 0x12, 2);
-	if (pmc_hiber)
-		pm_power_off = &vt8500_power_off;
-	else
-		printk(KERN_ERR "PMC Hibernation register could not be remapped, not enabling power off!\n");
-
-	wmt_setup_restart();
-	vt8500_set_resources();
-	platform_add_devices(devices, ARRAY_SIZE(devices));
-	vt8500_gpio_init();
-}
-
-MACHINE_START(BV07, "Benign BV07 Mini Netbook")
-	.atag_offset	= 0x100,
-	.restart	= wmt_restart,
-	.reserve	= vt8500_reserve_mem,
-	.map_io		= vt8500_map_io,
-	.init_irq	= vt8500_init_irq,
-	.timer		= &vt8500_timer,
-	.init_machine	= bv07_init,
-MACHINE_END
diff --git a/arch/arm/mach-vt8500/common.h b/arch/arm/mach-vt8500/common.h
new file mode 100644
index 0000000..06e93bb
--- /dev/null
+++ b/arch/arm/mach-vt8500/common.h
@@ -0,0 +1,25 @@
+/* linux/arch/arm/mach-vt8500/dt_common.h
+ *
+ * Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __ARCH_ARM_MACH_VT8500_DT_COMMON_H
+#define __ARCH_ARM_MACH_VT8500_DT_COMMON_H
+
+#include <linux/of.h>
+
+void __init vt8500_timer_init(void);
+int __init vt8500_irq_init(struct device_node *node,
+				struct device_node *parent);
+
+#endif
diff --git a/arch/arm/mach-vt8500/devices-vt8500.c b/arch/arm/mach-vt8500/devices-vt8500.c
deleted file mode 100644
index 19519ae..0000000
--- a/arch/arm/mach-vt8500/devices-vt8500.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/* linux/arch/arm/mach-vt8500/devices-vt8500.c
- *
- * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/platform_device.h>
-
-#include <mach/vt8500_regs.h>
-#include <mach/vt8500_irqs.h>
-#include <mach/i8042.h>
-#include "devices.h"
-
-void __init vt8500_set_resources(void)
-{
-	struct resource tmp[3];
-
-	tmp[0] = wmt_mmio_res(VT8500_LCDC_BASE, SZ_1K);
-	tmp[1] = wmt_irq_res(IRQ_LCDC);
-	wmt_res_add(&vt8500_device_lcdc, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(VT8500_UART0_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART0);
-	wmt_res_add(&vt8500_device_uart0, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(VT8500_UART1_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART1);
-	wmt_res_add(&vt8500_device_uart1, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(VT8500_UART2_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART2);
-	wmt_res_add(&vt8500_device_uart2, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(VT8500_UART3_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART3);
-	wmt_res_add(&vt8500_device_uart3, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(VT8500_EHCI_BASE, SZ_512);
-	tmp[1] = wmt_irq_res(IRQ_EHCI);
-	wmt_res_add(&vt8500_device_ehci, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(VT8500_GEGEA_BASE, SZ_256);
-	wmt_res_add(&vt8500_device_ge_rops, tmp, 1);
-
-	tmp[0] = wmt_mmio_res(VT8500_PWM_BASE, 0x44);
-	wmt_res_add(&vt8500_device_pwm, tmp, 1);
-
-	tmp[0] = wmt_mmio_res(VT8500_RTC_BASE, 0x2c);
-	tmp[1] = wmt_irq_res(IRQ_RTC);
-	tmp[2] = wmt_irq_res(IRQ_RTCSM);
-	wmt_res_add(&vt8500_device_rtc, tmp, 3);
-}
-
-static void __init vt8500_set_externs(void)
-{
-	/* Non-resource-aware stuff */
-	wmt_ic_base = VT8500_IC_BASE;
-	wmt_gpio_base = VT8500_GPIO_BASE;
-	wmt_pmc_base = VT8500_PMC_BASE;
-	wmt_i8042_base = VT8500_PS2_BASE;
-
-	wmt_nr_irqs = VT8500_NR_IRQS;
-	wmt_timer_irq = IRQ_PMCOS0;
-	wmt_gpio_ext_irq[0] = IRQ_EXT0;
-	wmt_gpio_ext_irq[1] = IRQ_EXT1;
-	wmt_gpio_ext_irq[2] = IRQ_EXT2;
-	wmt_gpio_ext_irq[3] = IRQ_EXT3;
-	wmt_gpio_ext_irq[4] = IRQ_EXT4;
-	wmt_gpio_ext_irq[5] = IRQ_EXT5;
-	wmt_gpio_ext_irq[6] = IRQ_EXT6;
-	wmt_gpio_ext_irq[7] = IRQ_EXT7;
-	wmt_i8042_kbd_irq = IRQ_PS2KBD;
-	wmt_i8042_aux_irq = IRQ_PS2MOUSE;
-}
-
-void __init vt8500_map_io(void)
-{
-	iotable_init(wmt_io_desc, ARRAY_SIZE(wmt_io_desc));
-
-	/* Should be done before interrupts and timers are initialized */
-	vt8500_set_externs();
-}
diff --git a/arch/arm/mach-vt8500/devices-wm8505.c b/arch/arm/mach-vt8500/devices-wm8505.c
deleted file mode 100644
index db4594e..0000000
--- a/arch/arm/mach-vt8500/devices-wm8505.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/* linux/arch/arm/mach-vt8500/devices-wm8505.c
- *
- * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/platform_device.h>
-
-#include <mach/wm8505_regs.h>
-#include <mach/wm8505_irqs.h>
-#include <mach/i8042.h>
-#include "devices.h"
-
-void __init wm8505_set_resources(void)
-{
-	struct resource tmp[3];
-
-	tmp[0] = wmt_mmio_res(WM8505_GOVR_BASE, SZ_512);
-	wmt_res_add(&vt8500_device_wm8505_fb, tmp, 1);
-
-	tmp[0] = wmt_mmio_res(WM8505_UART0_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART0);
-	wmt_res_add(&vt8500_device_uart0, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(WM8505_UART1_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART1);
-	wmt_res_add(&vt8500_device_uart1, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(WM8505_UART2_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART2);
-	wmt_res_add(&vt8500_device_uart2, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(WM8505_UART3_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART3);
-	wmt_res_add(&vt8500_device_uart3, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(WM8505_UART4_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART4);
-	wmt_res_add(&vt8500_device_uart4, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(WM8505_UART5_BASE, 0x1040);
-	tmp[1] = wmt_irq_res(IRQ_UART5);
-	wmt_res_add(&vt8500_device_uart5, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(WM8505_EHCI_BASE, SZ_512);
-	tmp[1] = wmt_irq_res(IRQ_EHCI);
-	wmt_res_add(&vt8500_device_ehci, tmp, 2);
-
-	tmp[0] = wmt_mmio_res(WM8505_GEGEA_BASE, SZ_256);
-	wmt_res_add(&vt8500_device_ge_rops, tmp, 1);
-
-	tmp[0] = wmt_mmio_res(WM8505_PWM_BASE, 0x44);
-	wmt_res_add(&vt8500_device_pwm, tmp, 1);
-
-	tmp[0] = wmt_mmio_res(WM8505_RTC_BASE, 0x2c);
-	tmp[1] = wmt_irq_res(IRQ_RTC);
-	tmp[2] = wmt_irq_res(IRQ_RTCSM);
-	wmt_res_add(&vt8500_device_rtc, tmp, 3);
-}
-
-static void __init wm8505_set_externs(void)
-{
-	/* Non-resource-aware stuff */
-	wmt_ic_base = WM8505_IC_BASE;
-	wmt_sic_base = WM8505_SIC_BASE;
-	wmt_gpio_base = WM8505_GPIO_BASE;
-	wmt_pmc_base = WM8505_PMC_BASE;
-	wmt_i8042_base = WM8505_PS2_BASE;
-
-	wmt_nr_irqs = WM8505_NR_IRQS;
-	wmt_timer_irq = IRQ_PMCOS0;
-	wmt_gpio_ext_irq[0] = IRQ_EXT0;
-	wmt_gpio_ext_irq[1] = IRQ_EXT1;
-	wmt_gpio_ext_irq[2] = IRQ_EXT2;
-	wmt_gpio_ext_irq[3] = IRQ_EXT3;
-	wmt_gpio_ext_irq[4] = IRQ_EXT4;
-	wmt_gpio_ext_irq[5] = IRQ_EXT5;
-	wmt_gpio_ext_irq[6] = IRQ_EXT6;
-	wmt_gpio_ext_irq[7] = IRQ_EXT7;
-	wmt_i8042_kbd_irq = IRQ_PS2KBD;
-	wmt_i8042_aux_irq = IRQ_PS2MOUSE;
-}
-
-void __init wm8505_map_io(void)
-{
-	iotable_init(wmt_io_desc, ARRAY_SIZE(wmt_io_desc));
-
-	/* Should be done before interrupts and timers are initialized */
-	wm8505_set_externs();
-}
diff --git a/arch/arm/mach-vt8500/devices.c b/arch/arm/mach-vt8500/devices.c
deleted file mode 100644
index 1fcdc36..0000000
--- a/arch/arm/mach-vt8500/devices.c
+++ /dev/null
@@ -1,270 +0,0 @@
-/* linux/arch/arm/mach-vt8500/devices.c
- *
- * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/pwm_backlight.h>
-#include <linux/memblock.h>
-
-#include <asm/mach/arch.h>
-
-#include <mach/vt8500fb.h>
-#include <mach/i8042.h>
-#include "devices.h"
-
-/* These can't use resources currently */
-unsigned long wmt_ic_base __initdata;
-unsigned long wmt_sic_base __initdata;
-unsigned long wmt_gpio_base __initdata;
-unsigned long wmt_pmc_base __initdata;
-unsigned long wmt_i8042_base __initdata;
-
-int wmt_nr_irqs __initdata;
-int wmt_timer_irq __initdata;
-int wmt_gpio_ext_irq[8] __initdata;
-
-/* Should remain accessible after init.
- * i8042 driver desperately calls for attention...
- */
-int wmt_i8042_kbd_irq;
-int wmt_i8042_aux_irq;
-
-static u64 fb_dma_mask = DMA_BIT_MASK(32);
-
-struct platform_device vt8500_device_lcdc = {
-	.name           = "vt8500-lcd",
-	.id             = 0,
-	.dev		= {
-		.dma_mask	= &fb_dma_mask,
-		.coherent_dma_mask = DMA_BIT_MASK(32),
-	},
-};
-
-struct platform_device vt8500_device_wm8505_fb = {
-	.name           = "wm8505-fb",
-	.id             = 0,
-};
-
-/* Smallest to largest */
-static struct vt8500fb_platform_data panels[] = {
-#ifdef CONFIG_WMT_PANEL_800X480
-{
-	.xres_virtual	= 800,
-	.yres_virtual	= 480 * 2,
-	.mode		= {
-		.name		= "800x480",
-		.xres		= 800,
-		.yres		= 480,
-		.left_margin	= 88,
-		.right_margin	= 40,
-		.upper_margin	= 32,
-		.lower_margin	= 11,
-		.hsync_len	= 0,
-		.vsync_len	= 1,
-		.vmode		= FB_VMODE_NONINTERLACED,
-	},
-},
-#endif
-#ifdef CONFIG_WMT_PANEL_800X600
-{
-	.xres_virtual	= 800,
-	.yres_virtual	= 600 * 2,
-	.mode		= {
-		.name		= "800x600",
-		.xres		= 800,
-		.yres		= 600,
-		.left_margin	= 88,
-		.right_margin	= 40,
-		.upper_margin	= 32,
-		.lower_margin	= 11,
-		.hsync_len	= 0,
-		.vsync_len	= 1,
-		.vmode		= FB_VMODE_NONINTERLACED,
-	},
-},
-#endif
-#ifdef CONFIG_WMT_PANEL_1024X576
-{
-	.xres_virtual	= 1024,
-	.yres_virtual	= 576 * 2,
-	.mode		= {
-		.name		= "1024x576",
-		.xres		= 1024,
-		.yres		= 576,
-		.left_margin	= 40,
-		.right_margin	= 24,
-		.upper_margin	= 32,
-		.lower_margin	= 11,
-		.hsync_len	= 96,
-		.vsync_len	= 2,
-		.vmode		= FB_VMODE_NONINTERLACED,
-	},
-},
-#endif
-#ifdef CONFIG_WMT_PANEL_1024X600
-{
-	.xres_virtual	= 1024,
-	.yres_virtual	= 600 * 2,
-	.mode		= {
-		.name		= "1024x600",
-		.xres		= 1024,
-		.yres		= 600,
-		.left_margin	= 66,
-		.right_margin	= 2,
-		.upper_margin	= 19,
-		.lower_margin	= 1,
-		.hsync_len	= 23,
-		.vsync_len	= 8,
-		.vmode		= FB_VMODE_NONINTERLACED,
-	},
-},
-#endif
-};
-
-static int current_panel_idx __initdata = ARRAY_SIZE(panels) - 1;
-
-static int __init panel_setup(char *str)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(panels); i++) {
-		if (strcmp(panels[i].mode.name, str) == 0) {
-			current_panel_idx = i;
-			break;
-		}
-	}
-	return 0;
-}
-
-early_param("panel", panel_setup);
-
-static inline void preallocate_fb(struct vt8500fb_platform_data *p,
-				  unsigned long align) {
-	p->video_mem_len = (p->xres_virtual * p->yres_virtual * 4) >>
-			(p->bpp > 16 ? 0 : (p->bpp > 8 ? 1 :
-					(8 / p->bpp) + 1));
-	p->video_mem_phys = (unsigned long)memblock_alloc(p->video_mem_len,
-							  align);
-	p->video_mem_virt = phys_to_virt(p->video_mem_phys);
-}
-
-struct platform_device vt8500_device_uart0 = {
-	.name		= "vt8500_serial",
-	.id		= 0,
-};
-
-struct platform_device vt8500_device_uart1 = {
-	.name		= "vt8500_serial",
-	.id		= 1,
-};
-
-struct platform_device vt8500_device_uart2 = {
-	.name		= "vt8500_serial",
-	.id		= 2,
-};
-
-struct platform_device vt8500_device_uart3 = {
-	.name		= "vt8500_serial",
-	.id		= 3,
-};
-
-struct platform_device vt8500_device_uart4 = {
-	.name		= "vt8500_serial",
-	.id		= 4,
-};
-
-struct platform_device vt8500_device_uart5 = {
-	.name		= "vt8500_serial",
-	.id		= 5,
-};
-
-static u64 ehci_dma_mask = DMA_BIT_MASK(32);
-
-struct platform_device vt8500_device_ehci = {
-	.name		= "vt8500-ehci",
-	.id		= 0,
-	.dev		= {
-		.dma_mask	= &ehci_dma_mask,
-		.coherent_dma_mask = DMA_BIT_MASK(32),
-	},
-};
-
-struct platform_device vt8500_device_ge_rops = {
-	.name		= "wmt_ge_rops",
-	.id		= -1,
-};
-
-struct platform_device vt8500_device_pwm = {
-	.name		= "vt8500-pwm",
-	.id		= 0,
-};
-
-static struct platform_pwm_backlight_data vt8500_pwmbl_data = {
-	.pwm_id		= 0,
-	.max_brightness	= 128,
-	.dft_brightness = 70,
-	.pwm_period_ns	= 250000, /* revisit when clocks are implemented */
-};
-
-struct platform_device vt8500_device_pwmbl = {
-	.name		= "pwm-backlight",
-	.id		= 0,
-	.dev		= {
-		.platform_data = &vt8500_pwmbl_data,
-	},
-};
-
-struct platform_device vt8500_device_rtc = {
-	.name		= "vt8500-rtc",
-	.id		= 0,
-};
-
-struct map_desc wmt_io_desc[] __initdata = {
-	/* SoC MMIO registers */
-	[0] = {
-		.virtual	= 0xf8000000,
-		.pfn		= __phys_to_pfn(0xd8000000),
-		.length		= 0x00390000, /* max of all chip variants */
-		.type		= MT_DEVICE
-	},
-	/* PCI I/O space, numbers tied to those in <mach/io.h> */
-	[1] = {
-		.virtual	= 0xf0000000,
-		.pfn		= __phys_to_pfn(0xc0000000),
-		.length		= SZ_64K,
-		.type		= MT_DEVICE
-	},
-};
-
-void __init vt8500_reserve_mem(void)
-{
-#ifdef CONFIG_FB_VT8500
-	panels[current_panel_idx].bpp = 16; /* Always use RGB565 */
-	preallocate_fb(&panels[current_panel_idx], SZ_4M);
-	vt8500_device_lcdc.dev.platform_data = &panels[current_panel_idx];
-#endif
-}
-
-void __init wm8505_reserve_mem(void)
-{
-#if defined CONFIG_FB_WM8505
-	panels[current_panel_idx].bpp = 32; /* Always use RGB888 */
-	preallocate_fb(&panels[current_panel_idx], 32);
-	vt8500_device_wm8505_fb.dev.platform_data = &panels[current_panel_idx];
-#endif
-}
diff --git a/arch/arm/mach-vt8500/devices.h b/arch/arm/mach-vt8500/devices.h
deleted file mode 100644
index 188d4e1..0000000
--- a/arch/arm/mach-vt8500/devices.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/* linux/arch/arm/mach-vt8500/devices.h
- *
- * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef __ARCH_ARM_MACH_VT8500_DEVICES_H
-#define __ARCH_ARM_MACH_VT8500_DEVICES_H
-
-#include <linux/platform_device.h>
-#include <asm/mach/map.h>
-
-void __init vt8500_init_irq(void);
-void __init wm8505_init_irq(void);
-void __init vt8500_map_io(void);
-void __init wm8505_map_io(void);
-void __init vt8500_reserve_mem(void);
-void __init wm8505_reserve_mem(void);
-void __init vt8500_gpio_init(void);
-void __init vt8500_set_resources(void);
-void __init wm8505_set_resources(void);
-
-extern unsigned long wmt_ic_base __initdata;
-extern unsigned long wmt_sic_base __initdata;
-extern unsigned long wmt_gpio_base __initdata;
-extern unsigned long wmt_pmc_base __initdata;
-
-extern int wmt_nr_irqs __initdata;
-extern int wmt_timer_irq __initdata;
-extern int wmt_gpio_ext_irq[8] __initdata;
-
-extern struct map_desc wmt_io_desc[2] __initdata;
-
-static inline struct resource wmt_mmio_res(u32 start, u32 size)
-{
-	struct resource tmp = {
-		.flags = IORESOURCE_MEM,
-		.start = start,
-		.end = start + size - 1,
-	};
-
-	return tmp;
-}
-
-static inline struct resource wmt_irq_res(int irq)
-{
-	struct resource tmp = {
-		.flags = IORESOURCE_IRQ,
-		.start = irq,
-		.end = irq,
-	};
-
-	return tmp;
-}
-
-static inline void wmt_res_add(struct platform_device *pdev,
-			       const struct resource *res, unsigned int num)
-{
-	if (unlikely(platform_device_add_resources(pdev, res, num)))
-		pr_err("Failed to assign resources\n");
-}
-
-extern struct sys_timer vt8500_timer;
-
-extern struct platform_device vt8500_device_uart0;
-extern struct platform_device vt8500_device_uart1;
-extern struct platform_device vt8500_device_uart2;
-extern struct platform_device vt8500_device_uart3;
-extern struct platform_device vt8500_device_uart4;
-extern struct platform_device vt8500_device_uart5;
-
-extern struct platform_device vt8500_device_lcdc;
-extern struct platform_device vt8500_device_wm8505_fb;
-extern struct platform_device vt8500_device_ehci;
-extern struct platform_device vt8500_device_ge_rops;
-extern struct platform_device vt8500_device_pwm;
-extern struct platform_device vt8500_device_pwmbl;
-extern struct platform_device vt8500_device_rtc;
-#endif
diff --git a/arch/arm/mach-vt8500/gpio.c b/arch/arm/mach-vt8500/gpio.c
deleted file mode 100644
index 2bcc0ec..0000000
--- a/arch/arm/mach-vt8500/gpio.c
+++ /dev/null
@@ -1,240 +0,0 @@
-/* linux/arch/arm/mach-vt8500/gpio.c
- *
- * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/gpio.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-
-#include "devices.h"
-
-#define to_vt8500(__chip) container_of(__chip, struct vt8500_gpio_chip, chip)
-
-#define ENABLE_REGS	0x0
-#define DIRECTION_REGS	0x20
-#define OUTVALUE_REGS	0x40
-#define INVALUE_REGS	0x60
-
-#define EXT_REGOFF	0x1c
-
-static void __iomem *regbase;
-
-struct vt8500_gpio_chip {
-	struct gpio_chip	chip;
-	unsigned int		shift;
-	unsigned int		regoff;
-};
-
-static int gpio_to_irq_map[8];
-
-static int vt8500_muxed_gpio_request(struct gpio_chip *chip,
-				     unsigned offset)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-	unsigned val = readl(regbase + ENABLE_REGS + vt8500_chip->regoff);
-
-	val |= (1 << vt8500_chip->shift << offset);
-	writel(val, regbase + ENABLE_REGS + vt8500_chip->regoff);
-
-	return 0;
-}
-
-static void vt8500_muxed_gpio_free(struct gpio_chip *chip,
-				   unsigned offset)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-	unsigned val = readl(regbase + ENABLE_REGS + vt8500_chip->regoff);
-
-	val &= ~(1 << vt8500_chip->shift << offset);
-	writel(val, regbase + ENABLE_REGS + vt8500_chip->regoff);
-}
-
-static int vt8500_muxed_gpio_direction_input(struct gpio_chip *chip,
-				       unsigned offset)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-	unsigned val = readl(regbase + DIRECTION_REGS + vt8500_chip->regoff);
-
-	val &= ~(1 << vt8500_chip->shift << offset);
-	writel(val, regbase + DIRECTION_REGS + vt8500_chip->regoff);
-
-	return 0;
-}
-
-static int vt8500_muxed_gpio_direction_output(struct gpio_chip *chip,
-					unsigned offset, int value)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-	unsigned val = readl(regbase + DIRECTION_REGS + vt8500_chip->regoff);
-
-	val |= (1 << vt8500_chip->shift << offset);
-	writel(val, regbase + DIRECTION_REGS + vt8500_chip->regoff);
-
-	if (value) {
-		val = readl(regbase + OUTVALUE_REGS + vt8500_chip->regoff);
-		val |= (1 << vt8500_chip->shift << offset);
-		writel(val, regbase + OUTVALUE_REGS + vt8500_chip->regoff);
-	}
-	return 0;
-}
-
-static int vt8500_muxed_gpio_get_value(struct gpio_chip *chip,
-				       unsigned offset)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-
-	return (readl(regbase + INVALUE_REGS + vt8500_chip->regoff)
-		>> vt8500_chip->shift >> offset) & 1;
-}
-
-static void vt8500_muxed_gpio_set_value(struct gpio_chip *chip,
-					unsigned offset, int value)
-{
-	struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-	unsigned val = readl(regbase + INVALUE_REGS + vt8500_chip->regoff);
-
-	if (value)
-		val |= (1 << vt8500_chip->shift << offset);
-	else
-		val &= ~(1 << vt8500_chip->shift << offset);
-
-	writel(val, regbase + INVALUE_REGS + vt8500_chip->regoff);
-}
-
-#define VT8500_GPIO_BANK(__name, __shift, __off, __base, __num)		\
-{									\
-	.chip = {							\
-		.label			= __name,			\
-		.request		= vt8500_muxed_gpio_request,	\
-		.free			= vt8500_muxed_gpio_free,	\
-		.direction_input  = vt8500_muxed_gpio_direction_input,	\
-		.direction_output = vt8500_muxed_gpio_direction_output,	\
-		.get			= vt8500_muxed_gpio_get_value,	\
-		.set			= vt8500_muxed_gpio_set_value,	\
-		.can_sleep		= 0,				\
-		.base			= __base,			\
-		.ngpio			= __num,			\
-	},								\
-	.shift		= __shift,					\
-	.regoff		= __off,					\
-}
-
-static struct vt8500_gpio_chip vt8500_muxed_gpios[] = {
-	VT8500_GPIO_BANK("uart0",	0,	0x0,	8,	4),
-	VT8500_GPIO_BANK("uart1",	4,	0x0,	12,	4),
-	VT8500_GPIO_BANK("spi0",	8,	0x0,	16,	4),
-	VT8500_GPIO_BANK("spi1",	12,	0x0,	20,	4),
-	VT8500_GPIO_BANK("spi2",	16,	0x0,	24,	4),
-	VT8500_GPIO_BANK("pwmout",	24,	0x0,	28,	2),
-
-	VT8500_GPIO_BANK("sdmmc",	0,	0x4,	30,	11),
-	VT8500_GPIO_BANK("ms",		16,	0x4,	41,	7),
-	VT8500_GPIO_BANK("i2c0",	24,	0x4,	48,	2),
-	VT8500_GPIO_BANK("i2c1",	26,	0x4,	50,	2),
-
-	VT8500_GPIO_BANK("mii",		0,	0x8,	52,	20),
-	VT8500_GPIO_BANK("see",		20,	0x8,	72,	4),
-	VT8500_GPIO_BANK("ide",		24,	0x8,	76,	7),
-
-	VT8500_GPIO_BANK("ccir",	0,	0xc,	83,	19),
-
-	VT8500_GPIO_BANK("ts",		8,	0x10,	102,	11),
-
-	VT8500_GPIO_BANK("lcd",		0,	0x14,	113,	23),
-};
-
-static int vt8500_gpio_direction_input(struct gpio_chip *chip,
-				       unsigned offset)
-{
-	unsigned val = readl(regbase + DIRECTION_REGS + EXT_REGOFF);
-
-	val &= ~(1 << offset);
-	writel(val, regbase + DIRECTION_REGS + EXT_REGOFF);
-	return 0;
-}
-
-static int vt8500_gpio_direction_output(struct gpio_chip *chip,
-					unsigned offset, int value)
-{
-	unsigned val = readl(regbase + DIRECTION_REGS + EXT_REGOFF);
-
-	val |= (1 << offset);
-	writel(val, regbase + DIRECTION_REGS + EXT_REGOFF);
-
-	if (value) {
-		val = readl(regbase + OUTVALUE_REGS + EXT_REGOFF);
-		val |= (1 << offset);
-		writel(val, regbase + OUTVALUE_REGS + EXT_REGOFF);
-	}
-	return 0;
-}
-
-static int vt8500_gpio_get_value(struct gpio_chip *chip,
-				       unsigned offset)
-{
-	return (readl(regbase + INVALUE_REGS + EXT_REGOFF) >> offset) & 1;
-}
-
-static void vt8500_gpio_set_value(struct gpio_chip *chip,
-					unsigned offset, int value)
-{
-	unsigned val = readl(regbase + OUTVALUE_REGS + EXT_REGOFF);
-
-	if (value)
-		val |= (1 << offset);
-	else
-		val &= ~(1 << offset);
-
-	writel(val, regbase + OUTVALUE_REGS + EXT_REGOFF);
-}
-
-static int vt8500_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
-{
-	if (offset > 7)
-		return -EINVAL;
-
-	return gpio_to_irq_map[offset];
-}
-
-static struct gpio_chip vt8500_external_gpios = {
-	.label			= "extgpio",
-	.direction_input	= vt8500_gpio_direction_input,
-	.direction_output	= vt8500_gpio_direction_output,
-	.get			= vt8500_gpio_get_value,
-	.set			= vt8500_gpio_set_value,
-	.to_irq			= vt8500_gpio_to_irq,
-	.can_sleep		= 0,
-	.base			= 0,
-	.ngpio			= 8,
-};
-
-void __init vt8500_gpio_init(void)
-{
-	int i;
-
-	for (i = 0; i < 8; i++)
-		gpio_to_irq_map[i] = wmt_gpio_ext_irq[i];
-
-	regbase = ioremap(wmt_gpio_base, SZ_64K);
-	if (!regbase) {
-		printk(KERN_ERR "Failed to map MMIO registers for GPIO\n");
-		return;
-	}
-
-	gpiochip_add(&vt8500_external_gpios);
-
-	for (i = 0; i < ARRAY_SIZE(vt8500_muxed_gpios); i++)
-		gpiochip_add(&vt8500_muxed_gpios[i].chip);
-}
diff --git a/arch/arm/mach-vt8500/include/mach/restart.h b/arch/arm/mach-vt8500/include/mach/restart.h
index 89f9b78..7389795 100644
--- a/arch/arm/mach-vt8500/include/mach/restart.h
+++ b/arch/arm/mach-vt8500/include/mach/restart.h
@@ -13,5 +13,5 @@
  *
  */
 
-void wmt_setup_restart(void);
-void wmt_restart(char mode, const char *cmd);
+void vt8500_setup_restart(void);
+void vt8500_restart(char mode, const char *cmd);
diff --git a/arch/arm/mach-vt8500/include/mach/vt8500_irqs.h b/arch/arm/mach-vt8500/include/mach/vt8500_irqs.h
deleted file mode 100644
index ecfee91..0000000
--- a/arch/arm/mach-vt8500/include/mach/vt8500_irqs.h
+++ /dev/null
@@ -1,88 +0,0 @@
-/*
- *  arch/arm/mach-vt8500/include/mach/vt8500_irqs.h
- *
- *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-/* VT8500 Interrupt Sources */
-
-#define IRQ_JPEGENC	0	/* JPEG Encoder */
-#define IRQ_JPEGDEC	1	/* JPEG Decoder */
-				/* Reserved */
-#define IRQ_PATA	3	/* PATA Controller */
-				/* Reserved */
-#define IRQ_DMA		5	/* DMA Controller */
-#define IRQ_EXT0	6	/* External Interrupt 0 */
-#define IRQ_EXT1	7	/* External Interrupt 1 */
-#define IRQ_GE		8	/* Graphic Engine */
-#define IRQ_GOV		9	/* Graphic Overlay Engine */
-#define IRQ_ETHER	10	/* Ethernet MAC */
-#define IRQ_MPEGTS	11	/* Transport Stream Interface */
-#define IRQ_LCDC	12	/* LCD Controller */
-#define IRQ_EXT2	13	/* External Interrupt 2 */
-#define IRQ_EXT3	14	/* External Interrupt 3 */
-#define IRQ_EXT4	15	/* External Interrupt 4 */
-#define IRQ_CIPHER	16	/* Cipher */
-#define IRQ_VPP		17	/* Video Post-Processor */
-#define IRQ_I2C1	18	/* I2C 1 */
-#define IRQ_I2C0	19	/* I2C 0 */
-#define IRQ_SDMMC	20	/* SD/MMC Controller */
-#define IRQ_SDMMC_DMA	21	/* SD/MMC Controller DMA */
-#define IRQ_PMC_WU	22	/* Power Management Controller Wakeup */
-				/* Reserved */
-#define IRQ_SPI0	24	/* SPI 0 */
-#define IRQ_SPI1	25	/* SPI 1 */
-#define IRQ_SPI2	26	/* SPI 2 */
-#define IRQ_LCDDF	27	/* LCD Data Formatter */
-#define IRQ_NAND	28	/* NAND Flash Controller */
-#define IRQ_NAND_DMA	29	/* NAND Flash Controller DMA */
-#define IRQ_MS		30	/* MemoryStick Controller */
-#define IRQ_MS_DMA	31	/* MemoryStick Controller DMA */
-#define IRQ_UART0	32	/* UART 0 */
-#define IRQ_UART1	33	/* UART 1 */
-#define IRQ_I2S		34	/* I2S */
-#define IRQ_PCM		35	/* PCM */
-#define IRQ_PMCOS0	36	/* PMC OS Timer 0 */
-#define IRQ_PMCOS1	37	/* PMC OS Timer 1 */
-#define IRQ_PMCOS2	38	/* PMC OS Timer 2 */
-#define IRQ_PMCOS3	39	/* PMC OS Timer 3 */
-#define IRQ_VPU		40	/* Video Processing Unit */
-#define IRQ_VID		41	/* Video Digital Input Interface */
-#define IRQ_AC97	42	/* AC97 Interface */
-#define IRQ_EHCI	43	/* USB */
-#define IRQ_NOR		44	/* NOR Flash Controller */
-#define IRQ_PS2MOUSE	45	/* PS/2 Mouse */
-#define IRQ_PS2KBD	46	/* PS/2 Keyboard */
-#define IRQ_UART2	47	/* UART 2 */
-#define IRQ_RTC		48	/* RTC Interrupt */
-#define IRQ_RTCSM	49	/* RTC Second/Minute Update Interrupt */
-#define IRQ_UART3	50	/* UART 3 */
-#define IRQ_ADC		51	/* ADC */
-#define IRQ_EXT5	52	/* External Interrupt 5 */
-#define IRQ_EXT6	53	/* External Interrupt 6 */
-#define IRQ_EXT7	54	/* External Interrupt 7 */
-#define IRQ_CIR		55	/* CIR */
-#define IRQ_DMA0	56	/* DMA Channel 0 */
-#define IRQ_DMA1	57	/* DMA Channel 1 */
-#define IRQ_DMA2	58	/* DMA Channel 2 */
-#define IRQ_DMA3	59	/* DMA Channel 3 */
-#define IRQ_DMA4	60	/* DMA Channel 4 */
-#define IRQ_DMA5	61	/* DMA Channel 5 */
-#define IRQ_DMA6	62	/* DMA Channel 6 */
-#define IRQ_DMA7	63	/* DMA Channel 7 */
-
-#define VT8500_NR_IRQS		64
diff --git a/arch/arm/mach-vt8500/include/mach/vt8500_regs.h b/arch/arm/mach-vt8500/include/mach/vt8500_regs.h
deleted file mode 100644
index 29c63ec..0000000
--- a/arch/arm/mach-vt8500/include/mach/vt8500_regs.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- *  arch/arm/mach-vt8500/include/mach/vt8500_regs.h
- *
- *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-#ifndef __ASM_ARM_ARCH_VT8500_REGS_H
-#define __ASM_ARM_ARCH_VT8500_REGS_H
-
-/* VT8500 Registers Map */
-
-#define VT8500_REGS_START_PHYS	0xd8000000	/* Start of MMIO registers */
-#define VT8500_REGS_START_VIRT	0xf8000000	/* Virtual mapping start */
-
-#define VT8500_DDR_BASE		0xd8000000	/* 1k	DDR/DDR2 Memory
-							Controller */
-#define VT8500_DMA_BASE		0xd8001000	/* 1k	DMA Controller */
-#define VT8500_SFLASH_BASE	0xd8002000	/* 1k	Serial Flash Memory
-							Controller */
-#define VT8500_ETHER_BASE	0xd8004000	/* 1k	Ethernet MAC 0 */
-#define VT8500_CIPHER_BASE	0xd8006000	/* 4k	Cipher */
-#define VT8500_USB_BASE		0xd8007800	/* 2k	USB OTG */
-# define VT8500_EHCI_BASE	0xd8007900	/*	EHCI */
-# define VT8500_UHCI_BASE	0xd8007b01	/*	UHCI */
-#define VT8500_PATA_BASE	0xd8008000	/* 512	PATA */
-#define VT8500_PS2_BASE		0xd8008800	/* 1k	PS/2 */
-#define VT8500_NAND_BASE	0xd8009000	/* 1k	NAND Controller */
-#define VT8500_NOR_BASE		0xd8009400	/* 1k	NOR Controller */
-#define VT8500_SDMMC_BASE	0xd800a000	/* 1k	SD/MMC Controller */
-#define VT8500_MS_BASE		0xd800b000	/* 1k	MS/MSPRO Controller */
-#define VT8500_LCDC_BASE	0xd800e400	/* 1k	LCD Controller */
-#define VT8500_VPU_BASE		0xd8050000	/* 256	VPU */
-#define VT8500_GOV_BASE		0xd8050300	/* 256	GOV */
-#define VT8500_GEGEA_BASE	0xd8050400	/* 768	GE/GE Alpha Mixing */
-#define VT8500_LCDF_BASE	0xd8050900	/* 256	LCD Formatter */
-#define VT8500_VID_BASE		0xd8050a00	/* 256	VID */
-#define VT8500_VPP_BASE		0xd8050b00	/* 256	VPP */
-#define VT8500_TSBK_BASE	0xd80f4000	/* 4k	TSBK */
-#define VT8500_JPEGDEC_BASE	0xd80fe000	/* 4k	JPEG Decoder */
-#define VT8500_JPEGENC_BASE	0xd80ff000	/* 4k	JPEG Encoder */
-#define VT8500_RTC_BASE		0xd8100000	/* 64k	RTC */
-#define VT8500_GPIO_BASE	0xd8110000	/* 64k	GPIO Configuration */
-#define VT8500_SCC_BASE		0xd8120000	/* 64k	System Configuration*/
-#define VT8500_PMC_BASE		0xd8130000	/* 64k	PMC Configuration */
-#define VT8500_IC_BASE		0xd8140000	/* 64k	Interrupt Controller*/
-#define VT8500_UART0_BASE	0xd8200000	/* 64k	UART 0 */
-#define VT8500_UART2_BASE	0xd8210000	/* 64k	UART 2 */
-#define VT8500_PWM_BASE		0xd8220000	/* 64k	PWM Configuration */
-#define VT8500_SPI0_BASE	0xd8240000	/* 64k	SPI 0 */
-#define VT8500_SPI1_BASE	0xd8250000	/* 64k	SPI 1 */
-#define VT8500_CIR_BASE		0xd8270000	/* 64k	CIR */
-#define VT8500_I2C0_BASE	0xd8280000	/* 64k	I2C 0 */
-#define VT8500_AC97_BASE	0xd8290000	/* 64k	AC97 */
-#define VT8500_SPI2_BASE	0xd82a0000	/* 64k	SPI 2 */
-#define VT8500_UART1_BASE	0xd82b0000	/* 64k	UART 1 */
-#define VT8500_UART3_BASE	0xd82c0000	/* 64k	UART 3 */
-#define VT8500_PCM_BASE		0xd82d0000	/* 64k	PCM */
-#define VT8500_I2C1_BASE	0xd8320000	/* 64k	I2C 1 */
-#define VT8500_I2S_BASE		0xd8330000	/* 64k	I2S */
-#define VT8500_ADC_BASE		0xd8340000	/* 64k	ADC */
-
-#define VT8500_REGS_END_PHYS	0xd834ffff	/* End of MMIO registers */
-#define VT8500_REGS_LENGTH	(VT8500_REGS_END_PHYS \
-				- VT8500_REGS_START_PHYS + 1)
-
-#endif
diff --git a/arch/arm/mach-vt8500/include/mach/wm8505_irqs.h b/arch/arm/mach-vt8500/include/mach/wm8505_irqs.h
deleted file mode 100644
index 6128627..0000000
--- a/arch/arm/mach-vt8500/include/mach/wm8505_irqs.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- *  arch/arm/mach-vt8500/include/mach/wm8505_irqs.h
- *
- *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-/* WM8505 Interrupt Sources */
-
-#define IRQ_UHCI	0	/* UHC FS (UHCI?) */
-#define IRQ_EHCI	1	/* UHC HS */
-#define IRQ_UDCDMA	2	/* UDC DMA */
-				/* Reserved */
-#define IRQ_PS2MOUSE	4	/* PS/2 Mouse */
-#define IRQ_UDC		5	/* UDC */
-#define IRQ_EXT0	6	/* External Interrupt 0 */
-#define IRQ_EXT1	7	/* External Interrupt 1 */
-#define IRQ_KEYPAD	8	/* Keypad */
-#define IRQ_DMA		9	/* DMA Controller */
-#define IRQ_ETHER	10	/* Ethernet MAC */
-				/* Reserved */
-				/* Reserved */
-#define IRQ_EXT2	13	/* External Interrupt 2 */
-#define IRQ_EXT3	14	/* External Interrupt 3 */
-#define IRQ_EXT4	15	/* External Interrupt 4 */
-#define IRQ_APB		16	/* APB Bridge */
-#define IRQ_DMA0	17	/* DMA Channel 0 */
-#define IRQ_I2C1	18	/* I2C 1 */
-#define IRQ_I2C0	19	/* I2C 0 */
-#define IRQ_SDMMC	20	/* SD/MMC Controller */
-#define IRQ_SDMMC_DMA	21	/* SD/MMC Controller DMA */
-#define IRQ_PMC_WU	22	/* Power Management Controller Wakeup */
-#define IRQ_PS2KBD	23	/* PS/2 Keyboard */
-#define IRQ_SPI0	24	/* SPI 0 */
-#define IRQ_SPI1	25	/* SPI 1 */
-#define IRQ_SPI2	26	/* SPI 2 */
-#define IRQ_DMA1	27	/* DMA Channel 1 */
-#define IRQ_NAND	28	/* NAND Flash Controller */
-#define IRQ_NAND_DMA	29	/* NAND Flash Controller DMA */
-#define IRQ_UART5	30	/* UART 5 */
-#define IRQ_UART4	31	/* UART 4 */
-#define IRQ_UART0	32	/* UART 0 */
-#define IRQ_UART1	33	/* UART 1 */
-#define IRQ_DMA2	34	/* DMA Channel 2 */
-#define IRQ_I2S		35	/* I2S */
-#define IRQ_PMCOS0	36	/* PMC OS Timer 0 */
-#define IRQ_PMCOS1	37	/* PMC OS Timer 1 */
-#define IRQ_PMCOS2	38	/* PMC OS Timer 2 */
-#define IRQ_PMCOS3	39	/* PMC OS Timer 3 */
-#define IRQ_DMA3	40	/* DMA Channel 3 */
-#define IRQ_DMA4	41	/* DMA Channel 4 */
-#define IRQ_AC97	42	/* AC97 Interface */
-				/* Reserved */
-#define IRQ_NOR		44	/* NOR Flash Controller */
-#define IRQ_DMA5	45	/* DMA Channel 5 */
-#define IRQ_DMA6	46	/* DMA Channel 6 */
-#define IRQ_UART2	47	/* UART 2 */
-#define IRQ_RTC		48	/* RTC Interrupt */
-#define IRQ_RTCSM	49	/* RTC Second/Minute Update Interrupt */
-#define IRQ_UART3	50	/* UART 3 */
-#define IRQ_DMA7	51	/* DMA Channel 7 */
-#define IRQ_EXT5	52	/* External Interrupt 5 */
-#define IRQ_EXT6	53	/* External Interrupt 6 */
-#define IRQ_EXT7	54	/* External Interrupt 7 */
-#define IRQ_CIR		55	/* CIR */
-#define IRQ_SIC0	56	/* SIC IRQ0 */
-#define IRQ_SIC1	57	/* SIC IRQ1 */
-#define IRQ_SIC2	58	/* SIC IRQ2 */
-#define IRQ_SIC3	59	/* SIC IRQ3 */
-#define IRQ_SIC4	60	/* SIC IRQ4 */
-#define IRQ_SIC5	61	/* SIC IRQ5 */
-#define IRQ_SIC6	62	/* SIC IRQ6 */
-#define IRQ_SIC7	63	/* SIC IRQ7 */
-				/* Reserved */
-#define IRQ_JPEGDEC	65	/* JPEG Decoder */
-#define IRQ_SAE		66	/* SAE (?) */
-				/* Reserved */
-#define IRQ_VPU		79	/* Video Processing Unit */
-#define IRQ_VPP		80	/* Video Post-Processor */
-#define IRQ_VID		81	/* Video Digital Input Interface */
-#define IRQ_SPU		82	/* SPU (?) */
-#define IRQ_PIP		83	/* PIP Error */
-#define IRQ_GE		84	/* Graphic Engine */
-#define IRQ_GOV		85	/* Graphic Overlay Engine */
-#define IRQ_DVO		86	/* Digital Video Output */
-				/* Reserved */
-#define IRQ_DMA8	92	/* DMA Channel 8 */
-#define IRQ_DMA9	93	/* DMA Channel 9 */
-#define IRQ_DMA10	94	/* DMA Channel 10 */
-#define IRQ_DMA11	95	/* DMA Channel 11 */
-#define IRQ_DMA12	96	/* DMA Channel 12 */
-#define IRQ_DMA13	97	/* DMA Channel 13 */
-#define IRQ_DMA14	98	/* DMA Channel 14 */
-#define IRQ_DMA15	99	/* DMA Channel 15 */
-				/* Reserved */
-#define IRQ_GOVW	111	/* GOVW (?) */
-#define IRQ_GOVRSDSCD	112	/* GOVR SDSCD (?) */
-#define IRQ_GOVRSDMIF	113	/* GOVR SDMIF (?) */
-#define IRQ_GOVRHDSCD	114	/* GOVR HDSCD (?) */
-#define IRQ_GOVRHDMIF	115	/* GOVR HDMIF (?) */
-
-#define WM8505_NR_IRQS		116
diff --git a/arch/arm/mach-vt8500/include/mach/wm8505_regs.h b/arch/arm/mach-vt8500/include/mach/wm8505_regs.h
deleted file mode 100644
index df15509..0000000
--- a/arch/arm/mach-vt8500/include/mach/wm8505_regs.h
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- *  arch/arm/mach-vt8500/include/mach/wm8505_regs.h
- *
- *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-#ifndef __ASM_ARM_ARCH_WM8505_REGS_H
-#define __ASM_ARM_ARCH_WM8505_REGS_H
-
-/* WM8505 Registers Map */
-
-#define WM8505_REGS_START_PHYS	0xd8000000	/* Start of MMIO registers */
-#define WM8505_REGS_START_VIRT	0xf8000000	/* Virtual mapping start */
-
-#define WM8505_DDR_BASE		0xd8000400	/* 1k	DDR/DDR2 Memory
-							Controller */
-#define WM8505_DMA_BASE		0xd8001800	/* 1k	DMA Controller */
-#define WM8505_VDMA_BASE	0xd8001c00	/* 1k	VDMA */
-#define WM8505_SFLASH_BASE	0xd8002000	/* 1k	Serial Flash Memory
-							Controller */
-#define WM8505_ETHER_BASE	0xd8004000	/* 1k	Ethernet MAC 0 */
-#define WM8505_CIPHER_BASE	0xd8006000	/* 4k	Cipher */
-#define WM8505_USB_BASE		0xd8007000	/* 2k	USB 2.0 Host */
-# define WM8505_EHCI_BASE	0xd8007100	/*	EHCI */
-# define WM8505_UHCI_BASE	0xd8007301	/*	UHCI */
-#define WM8505_PS2_BASE		0xd8008800	/* 1k	PS/2 */
-#define WM8505_NAND_BASE	0xd8009000	/* 1k	NAND Controller */
-#define WM8505_NOR_BASE		0xd8009400	/* 1k	NOR Controller */
-#define WM8505_SDMMC_BASE	0xd800a000	/* 1k	SD/MMC Controller */
-#define WM8505_VPU_BASE		0xd8050000	/* 256	VPU */
-#define WM8505_GOV_BASE		0xd8050300	/* 256	GOV */
-#define WM8505_GEGEA_BASE	0xd8050400	/* 768	GE/GE Alpha Mixing */
-#define WM8505_GOVR_BASE	0xd8050800	/* 512	GOVR (frambuffer) */
-#define WM8505_VID_BASE		0xd8050a00	/* 256	VID */
-#define WM8505_SCL_BASE		0xd8050d00	/* 256	SCL */
-#define WM8505_VPP_BASE		0xd8050f00	/* 256	VPP */
-#define WM8505_JPEGDEC_BASE	0xd80fe000	/* 4k	JPEG Decoder */
-#define WM8505_RTC_BASE		0xd8100000	/* 64k	RTC */
-#define WM8505_GPIO_BASE	0xd8110000	/* 64k	GPIO Configuration */
-#define WM8505_SCC_BASE		0xd8120000	/* 64k	System Configuration*/
-#define WM8505_PMC_BASE		0xd8130000	/* 64k	PMC Configuration */
-#define WM8505_IC_BASE		0xd8140000	/* 64k	Interrupt Controller*/
-#define WM8505_SIC_BASE		0xd8150000	/* 64k	Secondary IC */
-#define WM8505_UART0_BASE	0xd8200000	/* 64k	UART 0 */
-#define WM8505_UART2_BASE	0xd8210000	/* 64k	UART 2 */
-#define WM8505_PWM_BASE		0xd8220000	/* 64k	PWM Configuration */
-#define WM8505_SPI0_BASE	0xd8240000	/* 64k	SPI 0 */
-#define WM8505_SPI1_BASE	0xd8250000	/* 64k	SPI 1 */
-#define WM8505_KEYPAD_BASE	0xd8260000	/* 64k	Keypad control */
-#define WM8505_CIR_BASE		0xd8270000	/* 64k	CIR */
-#define WM8505_I2C0_BASE	0xd8280000	/* 64k	I2C 0 */
-#define WM8505_AC97_BASE	0xd8290000	/* 64k	AC97 */
-#define WM8505_SPI2_BASE	0xd82a0000	/* 64k	SPI 2 */
-#define WM8505_UART1_BASE	0xd82b0000	/* 64k	UART 1 */
-#define WM8505_UART3_BASE	0xd82c0000	/* 64k	UART 3 */
-#define WM8505_I2C1_BASE	0xd8320000	/* 64k	I2C 1 */
-#define WM8505_I2S_BASE		0xd8330000	/* 64k	I2S */
-#define WM8505_UART4_BASE	0xd8370000	/* 64k	UART 4 */
-#define WM8505_UART5_BASE	0xd8380000	/* 64k	UART 5 */
-
-#define WM8505_REGS_END_PHYS	0xd838ffff	/* End of MMIO registers */
-#define WM8505_REGS_LENGTH	(WM8505_REGS_END_PHYS \
-				- WM8505_REGS_START_PHYS + 1)
-
-#endif
diff --git a/arch/arm/mach-vt8500/irq.c b/arch/arm/mach-vt8500/irq.c
index 642de04..b0d9ecb 100644
--- a/arch/arm/mach-vt8500/irq.c
+++ b/arch/arm/mach-vt8500/irq.c
@@ -1,6 +1,7 @@
 /*
- *  arch/arm/mach-vt8500/irq.c
+ *  arch/arm/mach-vt8500/irq_dt.c
  *
+ *  Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
  *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -18,16 +19,25 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+/* 
+ * This file is copied and modified from the original irq.c provided by
+ * Alexey Charkov. Minor changes have been made for Device Tree Support.
+ */
+
+#include <linux/slab.h>
 #include <linux/io.h>
 #include <linux/irq.h>
+#include <linux/irqdomain.h>
 #include <linux/interrupt.h>
 
+#include <linux/of.h>
+#include <linux/of_address.h>
+
 #include <asm/irq.h>
 
-#include "devices.h"
 
-#define VT8500_IC_DCTR		0x40		/* Destination control
-						register, 64*u8 */
+#define VT8500_IC_DCTR		0x40
+
 #define VT8500_INT_ENABLE	(1 << 3)
 #define VT8500_TRIGGER_HIGH	(0 << 4)
 #define VT8500_TRIGGER_RISING	(1 << 4)
@@ -36,63 +46,52 @@
 				| VT8500_TRIGGER_FALLING)
 #define VT8500_IC_STATUS	0x80		/* Interrupt status, 2*u32 */
 
-static void __iomem *ic_regbase;
-static void __iomem *sic_regbase;
+static int irq_cnt = 0;
+
+struct vt8500_irq_priv {
+	void __iomem *base;
+};
 
 static void vt8500_irq_mask(struct irq_data *d)
 {
-	void __iomem *base = ic_regbase;
-	unsigned irq = d->irq;
+	struct vt8500_irq_priv *priv = (struct vt8500_irq_priv *)(d->domain->host_data);
+	void __iomem *base = priv->base;
 	u8 edge;
 
-	if (irq >= 64) {
-		base = sic_regbase;
-		irq -= 64;
-	}
-	edge = readb(base + VT8500_IC_DCTR + irq) & VT8500_EDGE;
+	edge = readb(base + VT8500_IC_DCTR + d->hwirq) & VT8500_EDGE;
 	if (edge) {
 		void __iomem *stat_reg = base + VT8500_IC_STATUS
-						+ (irq < 32 ? 0 : 4);
+						+ (d->hwirq < 32 ? 0 : 4);
 		unsigned status = readl(stat_reg);
 
-		status |= (1 << (irq & 0x1f));
+		status |= (1 << (d->hwirq & 0x1f));
 		writel(status, stat_reg);
 	} else {
-		u8 dctr = readb(base + VT8500_IC_DCTR + irq);
+		u8 dctr = readb(base + VT8500_IC_DCTR + d->hwirq);
 
 		dctr &= ~VT8500_INT_ENABLE;
-		writeb(dctr, base + VT8500_IC_DCTR + irq);
+		writeb(dctr, base + VT8500_IC_DCTR + d->hwirq);
 	}
 }
 
 static void vt8500_irq_unmask(struct irq_data *d)
 {
-	void __iomem *base = ic_regbase;
-	unsigned irq = d->irq;
+	struct vt8500_irq_priv *priv = (struct vt8500_irq_priv *)(d->domain->host_data);
+	void __iomem *base = priv->base;
 	u8 dctr;
 
-	if (irq >= 64) {
-		base = sic_regbase;
-		irq -= 64;
-	}
-	dctr = readb(base + VT8500_IC_DCTR + irq);
+	dctr = readb(base + VT8500_IC_DCTR + d->hwirq);
 	dctr |= VT8500_INT_ENABLE;
-	writeb(dctr, base + VT8500_IC_DCTR + irq);
+	writeb(dctr, base + VT8500_IC_DCTR + d->hwirq);
 }
 
 static int vt8500_irq_set_type(struct irq_data *d, unsigned int flow_type)
 {
-	void __iomem *base = ic_regbase;
-	unsigned irq = d->irq;
-	unsigned orig_irq = irq;
+	struct vt8500_irq_priv *priv = (struct vt8500_irq_priv *)(d->domain->host_data);
+	void __iomem *base = priv->base;
 	u8 dctr;
 
-	if (irq >= 64) {
-		base = sic_regbase;
-		irq -= 64;
-	}
-
-	dctr = readb(base + VT8500_IC_DCTR + irq);
+	dctr = readb(base + VT8500_IC_DCTR + d->hwirq);
 	dctr &= ~VT8500_EDGE;
 
 	switch (flow_type) {
@@ -100,18 +99,18 @@ static int vt8500_irq_set_type(struct irq_data *d, unsigned int flow_type)
 		return -EINVAL;
 	case IRQF_TRIGGER_HIGH:
 		dctr |= VT8500_TRIGGER_HIGH;
-		__irq_set_handler_locked(orig_irq, handle_level_irq);
+		__irq_set_handler_locked(d->irq, handle_level_irq);
 		break;
 	case IRQF_TRIGGER_FALLING:
 		dctr |= VT8500_TRIGGER_FALLING;
-		__irq_set_handler_locked(orig_irq, handle_edge_irq);
+		__irq_set_handler_locked(d->irq, handle_edge_irq);
 		break;
 	case IRQF_TRIGGER_RISING:
 		dctr |= VT8500_TRIGGER_RISING;
-		__irq_set_handler_locked(orig_irq, handle_edge_irq);
+		__irq_set_handler_locked(d->irq, handle_edge_irq);
 		break;
 	}
-	writeb(dctr, base + VT8500_IC_DCTR + irq);
+	writeb(dctr, base + VT8500_IC_DCTR + d->hwirq);
 
 	return 0;
 }
@@ -124,57 +123,56 @@ static struct irq_chip vt8500_irq_chip = {
 	.irq_set_type = vt8500_irq_set_type,
 };
 
-void __init vt8500_init_irq(void)
+static void __init vt8500_init_irq_hw(void __iomem *base)
 {
 	unsigned int i;
 
-	ic_regbase = ioremap(wmt_ic_base, SZ_64K);
+	/* Enable rotating priority for IRQ */
+	writel((1 << 6), base + 0x20);
+	writel(0, base + 0x24);
 
-	if (ic_regbase) {
-		/* Enable rotating priority for IRQ */
-		writel((1 << 6), ic_regbase + 0x20);
-		writel(0, ic_regbase + 0x24);
+	for (i = 0; i < 64; i++) {
+		/* Disable all interrupts and route them to IRQ */
+		writeb(0x00, base + VT8500_IC_DCTR + i);
+	}
+}
 
-		for (i = 0; i < wmt_nr_irqs; i++) {
-			/* Disable all interrupts and route them to IRQ */
-			writeb(0x00, ic_regbase + VT8500_IC_DCTR + i);
+static int vt8500_irq_map(struct irq_domain *h, unsigned int virq,
+							irq_hw_number_t hw)
+{
+	irq_set_chip_and_handler(virq, &vt8500_irq_chip, handle_level_irq);
+	set_irq_flags(virq, IRQF_VALID);
 
-			irq_set_chip_and_handler(i, &vt8500_irq_chip,
-						 handle_level_irq);
-			set_irq_flags(i, IRQF_VALID);
-		}
-	} else {
-		printk(KERN_ERR "Unable to remap the Interrupt Controller registers, not enabling IRQs!\n");
-	}
+	return 0;
 }
 
-void __init wm8505_init_irq(void)
+static struct irq_domain_ops vt8500_irq_domain_ops = {
+	.map = vt8500_irq_map,
+	.xlate = irq_domain_xlate_onecell,
+};
+
+int __init vt8500_irq_init(struct device_node *node, struct device_node *parent)
 {
-	unsigned int i;
+	struct irq_domain *vt8500_irq_domain;
+	struct vt8500_irq_priv *priv;
+	struct device_node *np = node;
 
-	ic_regbase = ioremap(wmt_ic_base, SZ_64K);
-	sic_regbase = ioremap(wmt_sic_base, SZ_64K);
-
-	if (ic_regbase && sic_regbase) {
-		/* Enable rotating priority for IRQ */
-		writel((1 << 6), ic_regbase + 0x20);
-		writel(0, ic_regbase + 0x24);
-		writel((1 << 6), sic_regbase + 0x20);
-		writel(0, sic_regbase + 0x24);
-
-		for (i = 0; i < wmt_nr_irqs; i++) {
-			/* Disable all interrupts and route them to IRQ */
-			if (i < 64)
-				writeb(0x00, ic_regbase + VT8500_IC_DCTR + i);
-			else
-				writeb(0x00, sic_regbase + VT8500_IC_DCTR
-								+ i - 64);
-
-			irq_set_chip_and_handler(i, &vt8500_irq_chip,
-						 handle_level_irq);
-			set_irq_flags(i, IRQF_VALID);
-		}
-	} else {
-		printk(KERN_ERR "Unable to remap the Interrupt Controller registers, not enabling IRQs!\n");
-	}
+	priv = kzalloc(sizeof(struct vt8500_irq_priv), GFP_KERNEL);
+	priv->base = of_iomap(np, 0);
+
+	vt8500_irq_domain = irq_domain_add_legacy(node, 64, irq_cnt, 0,
+				&vt8500_irq_domain_ops, priv);
+	if (!vt8500_irq_domain)
+		printk("Unable to add wmt irq domain!\n");
+
+	irq_set_default_host(vt8500_irq_domain);
+
+	vt8500_init_irq_hw(priv->base);
+
+	printk("Added IRQ Controller @ %x [virq_base = %d]\n", (u32)(priv->base), irq_cnt);
+
+	irq_cnt += 64;
+
+	return 0;
 }
+
diff --git a/arch/arm/mach-vt8500/restart.c b/arch/arm/mach-vt8500/restart.c
deleted file mode 100644
index 497e89a..0000000
--- a/arch/arm/mach-vt8500/restart.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/* linux/arch/arm/mach-vt8500/restart.c
- *
- * Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-#include <asm/io.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-#define LEGACY_PMC_BASE		0xD8130000
-#define WMT_PRIZM_PMSR_REG	0x60
-
-static void __iomem *pmc_base;
-
-void wmt_setup_restart(void)
-{
-	struct device_node *np;
-
-	/*
-	 * Check if Power Mgmt Controller node is present in device tree. If no
-	 * device tree node, use the legacy PMSR value (valid for all current
-	 * SoCs).
-	 */
-	np = of_find_compatible_node(NULL, NULL, "wmt,prizm-pmc");
-	if (np) {
-		pmc_base = of_iomap(np, 0);
-
-		if (!pmc_base)
-			pr_err("%s:of_iomap(pmc) failed\n", __func__);
-
-		of_node_put(np);
-	} else {
-		pmc_base = ioremap(LEGACY_PMC_BASE, 0x1000);
-		if (!pmc_base) {
-			pr_err("%s:ioremap(rstc) failed\n", __func__);
-			return;
-		}
-	}
-}
-
-void wmt_restart(char mode, const char *cmd)
-{
-	if (pmc_base)
-		writel(1, pmc_base + WMT_PRIZM_PMSR_REG);
-}
diff --git a/arch/arm/mach-vt8500/timer.c b/arch/arm/mach-vt8500/timer.c
index d5376c5..00778e9 100644
--- a/arch/arm/mach-vt8500/timer.c
+++ b/arch/arm/mach-vt8500/timer.c
@@ -1,6 +1,7 @@
 /*
- *  arch/arm/mach-vt8500/timer.c
+ *  arch/arm/mach-vt8500/timer_dt.c
  *
+ *  Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
  *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -18,18 +19,25 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+/* 
+ * This file is copied and modified from the original timer.c provided by
+ * Alexey Charkov. Minor changes have been made for Device Tree Support.
+ */
+
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/clocksource.h>
 #include <linux/clockchips.h>
 #include <linux/delay.h>
-
 #include <asm/mach/time.h>
 
-#include "devices.h"
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 
 #define VT8500_TIMER_OFFSET	0x0100
+#define VT8500_TIMER_HZ		3000000
 #define TIMER_MATCH_VAL		0x0000
 #define TIMER_COUNT_VAL		0x0010
 #define TIMER_STATUS_VAL	0x0014
@@ -39,7 +47,6 @@
 #define TIMER_COUNT_R_ACTIVE	(1 << 5)	/* not ready for read */
 #define TIMER_COUNT_W_ACTIVE	(1 << 4)	/* not ready for write */
 #define TIMER_MATCH_W_ACTIVE	(1 << 0)	/* not ready for write */
-#define VT8500_TIMER_HZ		3000000
 
 #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
 
@@ -55,7 +62,7 @@ static cycle_t vt8500_timer_read(struct clocksource *cs)
 	return readl(regbase + TIMER_COUNT_VAL);
 }
 
-struct clocksource clocksource = {
+static struct clocksource clocksource = {
 	.name           = "vt8500_timer",
 	.rating         = 200,
 	.read           = vt8500_timer_read,
@@ -98,7 +105,7 @@ static void vt8500_timer_set_mode(enum clock_event_mode mode,
 	}
 }
 
-struct clock_event_device clockevent = {
+static struct clock_event_device clockevent = {
 	.name           = "vt8500_timer",
 	.features       = CLOCK_EVT_FEAT_ONESHOT,
 	.rating         = 200,
@@ -115,19 +122,41 @@ static irqreturn_t vt8500_timer_interrupt(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-struct irqaction irq = {
+static struct irqaction irq = {
 	.name    = "vt8500_timer",
 	.flags   = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
 	.handler = vt8500_timer_interrupt,
 	.dev_id  = &clockevent,
 };
 
-static void __init vt8500_timer_init(void)
+static struct of_device_id vt8500_timer_ids[] = {
+	{ .compatible = "via,vt8500-timer" },
+	{ }
+};
+
+void __init vt8500_timer_init(void)
 {
-	regbase = ioremap(wmt_pmc_base + VT8500_TIMER_OFFSET, 0x28);
-	if (!regbase)
-		printk(KERN_ERR "vt8500_timer_init: failed to map MMIO registers\n");
+	struct device_node *np;
+	int timer_irq;
 
+	np = of_find_matching_node(NULL, vt8500_timer_ids);
+	if (!np) {
+		printk(KERN_ERR "Timer: Timer description missing from Device Tree\n");
+		return;
+	}
+	regbase = of_iomap(np, 0);
+	if (!regbase) {
+		printk(KERN_ERR "Timer: Missing iobase description in Device Tree\n");
+		of_node_put(np);
+		return;
+	}
+	timer_irq = irq_of_parse_and_map(np, 0);
+	if (!timer_irq) {
+		printk(KERN_ERR "Timer: Missing irq description in Device Tree\n");
+		of_node_put(np);
+		return;
+	}
+	
 	writel(1, regbase + TIMER_CTRL_VAL);
 	writel(0xf, regbase + TIMER_STATUS_VAL);
 	writel(~0, regbase + TIMER_MATCH_VAL);
@@ -144,12 +173,9 @@ static void __init vt8500_timer_init(void)
 	clockevent.min_delta_ns = clockevent_delta2ns(4, &clockevent);
 	clockevent.cpumask = cpumask_of(0);
 
-	if (setup_irq(wmt_timer_irq, &irq))
+	if (setup_irq(timer_irq, &irq))
 		printk(KERN_ERR "vt8500_timer_init: setup_irq failed for %s\n",
 					clockevent.name);
 	clockevents_register_device(&clockevent);
 }
 
-struct sys_timer vt8500_timer = {
-	.init = vt8500_timer_init
-};
diff --git a/arch/arm/mach-vt8500/vt8500.c b/arch/arm/mach-vt8500/vt8500.c
new file mode 100644
index 0000000..9f98a6d
--- /dev/null
+++ b/arch/arm/mach-vt8500/vt8500.c
@@ -0,0 +1,192 @@
+/*
+ *  arch/arm/mach-vt8500/vt8500.c
+ *
+ *  Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/io.h>
+#include <linux/pm.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/time.h>
+#include <asm/mach/map.h>
+
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+
+#include <mach/restart.h>
+#include <mach/gpio.h>
+
+#include "common.h"
+
+#define LEGACY_GPIO_BASE	0xD8110000
+#define LEGACY_PMC_BASE		0xD8130000
+
+/* Registers in GPIO Controller */
+#define VT8500_GPIO_MUX_REG	0x200
+
+/* Registers in Power Management Controller */
+#define VT8500_HCR_REG		0x12
+#define VT8500_PMSR_REG		0x60
+
+static void __iomem *pmc_base;
+
+void vt8500_restart(char mode, const char *cmd)
+{
+	if (pmc_base)
+		writel(1, pmc_base + VT8500_PMSR_REG);
+}
+
+static struct map_desc vt8500_io_desc[] __initdata = {
+	/* SoC MMIO registers */
+	[0] = {
+		.virtual	= 0xf8000000,
+		.pfn		= __phys_to_pfn(0xd8000000),
+		.length		= 0x00390000, /* max of all chip variants */
+		.type		= MT_DEVICE
+	},
+};
+
+void __init vt8500_map_io(void)
+{
+	iotable_init(vt8500_io_desc, ARRAY_SIZE(vt8500_io_desc));
+}
+
+static void vt8500_power_off(void)
+{
+	local_irq_disable();
+	writew(5, pmc_base + VT8500_HCR_REG);
+	asm("mcr%? p15, 0, %0, c7, c0, 4" : : "r" (0));
+}
+
+void __init vt8500_init(void)
+{
+	struct device_node *np, *fb;
+	void __iomem *gpio_base;
+
+#ifdef CONFIG_FB_VT8500
+	fb = of_find_compatible_node(NULL, NULL, "via,vt8500-fb");
+	if (fb) {
+		np = of_find_compatible_node(NULL, NULL, "via,vt8500-gpio");
+		if (np) {
+			gpio_base = of_iomap(np, 0);
+
+			if (!gpio_base)
+				pr_err("%s:of_iomap(gpio_mux) failed\n", __func__);
+
+			of_node_put(np);
+		} else {
+			gpio_base = ioremap(LEGACY_GPIO_BASE, 0x1000);
+			if (!gpio_base)
+				pr_err("%s:ioremap(legacy_gpio_mux) failed\n", __func__);
+		}
+		if (gpio_base) {
+			writel(readl(gpio_base + VT8500_GPIO_MUX_REG) | 1,
+				gpio_base + VT8500_GPIO_MUX_REG);
+			iounmap(gpio_base);
+		} else
+			pr_err("%s: Could not remap GPIO mux\n", __func__);
+
+		of_node_put(fb);
+	}
+#endif
+
+#ifdef CONFIG_FB_WM8505
+	fb = of_find_compatible_node(NULL, NULL, "wm,wm8505-fb");
+	if (fb) {
+		np = of_find_compatible_node(NULL, NULL, "wm,wm8505-gpio");
+		if (!np)
+			np = of_find_compatible_node(NULL, NULL,
+							"wm,wm8650-gpio");
+		if (np) {
+			gpio_base = of_iomap(np, 0);
+
+			if (!gpio_base)
+				pr_err("%s:of_iomap(gpio_mux) failed\n", __func__);
+
+			of_node_put(np);
+		} else {
+			gpio_base = ioremap(LEGACY_GPIO_BASE, 0x1000);
+			if (!gpio_base)
+				pr_err("%s:ioremap(legacy_gpio_mux) failed\n", __func__);
+		}
+		if (gpio_base) {
+			writel(readl(gpio_base + VT8500_GPIO_MUX_REG) | 0x80000000,
+				gpio_base + VT8500_GPIO_MUX_REG);
+			iounmap(gpio_base);
+		} else
+			pr_err("%s: Could not remap GPIO mux\n", __func__);
+
+		of_node_put(fb);
+	}
+#endif
+
+	np = of_find_compatible_node(NULL, NULL, "via,vt8500-pmc");
+	if (np) {
+		pmc_base = of_iomap(np, 0);
+
+		if (!pmc_base)
+			pr_err("%s:of_iomap(pmc) failed\n", __func__);
+
+		of_node_put(np);
+	} else {
+		pmc_base = ioremap(LEGACY_PMC_BASE, 0x1000);
+		if (!pmc_base) {
+			pr_err("%s:ioremap(power_off) failed\n", __func__);
+		}
+	}
+	if (pmc_base)
+		pm_power_off = &vt8500_power_off;
+	else
+		pr_err("%s: PMC Hibernation register could not be remapped, not enabling power off!\n", __func__);
+
+
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const struct of_device_id vt8500_irq_match[] __initconst = {
+	{ .compatible = "via,vt8500-intc", .data = vt8500_irq_init, },
+	{ /* sentinel */ },
+};
+
+static void __init vt8500_init_irq(void)
+{
+	of_irq_init(vt8500_irq_match);
+};
+
+static struct sys_timer vt8500_timer = {
+	.init = vt8500_timer_init,
+};
+
+static const char *vt8500_dt_compat[] = {
+	"via,vt8500",
+	"wm,wm8650",
+	"wm,wm8505",
+};
+
+DT_MACHINE_START(WMT_DT, "VIA/Wondermedia SoC (Device Tree Support)")
+	.dt_compat	= vt8500_dt_compat,
+	.map_io		= vt8500_map_io,
+	.init_irq	= vt8500_init_irq,
+	.timer		= &vt8500_timer,
+	.init_machine	= vt8500_init,
+	.restart	= vt8500_restart,
+MACHINE_END
+
diff --git a/arch/arm/mach-vt8500/wm8505_7in.c b/arch/arm/mach-vt8500/wm8505_7in.c
deleted file mode 100644
index db19886..0000000
--- a/arch/arm/mach-vt8500/wm8505_7in.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- *  arch/arm/mach-vt8500/wm8505_7in.c
- *
- *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#include <linux/io.h>
-#include <linux/pm.h>
-
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-#include <mach/restart.h>
-
-#include "devices.h"
-
-static void __iomem *pmc_hiber;
-
-static struct platform_device *devices[] __initdata = {
-	&vt8500_device_uart0,
-	&vt8500_device_ehci,
-	&vt8500_device_wm8505_fb,
-	&vt8500_device_ge_rops,
-	&vt8500_device_pwm,
-	&vt8500_device_pwmbl,
-	&vt8500_device_rtc,
-};
-
-static void vt8500_power_off(void)
-{
-	local_irq_disable();
-	writew(5, pmc_hiber);
-	asm("mcr%? p15, 0, %0, c7, c0, 4" : : "r" (0));
-}
-
-void __init wm8505_7in_init(void)
-{
-#ifdef CONFIG_FB_WM8505
-	void __iomem *gpio_mux_reg = ioremap(wmt_gpio_base + 0x200, 4);
-	if (gpio_mux_reg) {
-		writel(readl(gpio_mux_reg) | 0x80000000, gpio_mux_reg);
-		iounmap(gpio_mux_reg);
-	} else {
-		printk(KERN_ERR "Could not remap the GPIO mux register, display may not work properly!\n");
-	}
-#endif
-	pmc_hiber = ioremap(wmt_pmc_base + 0x12, 2);
-	if (pmc_hiber)
-		pm_power_off = &vt8500_power_off;
-	else
-		printk(KERN_ERR "PMC Hibernation register could not be remapped, not enabling power off!\n");
-	wmt_setup_restart();
-	wm8505_set_resources();
-	platform_add_devices(devices, ARRAY_SIZE(devices));
-	vt8500_gpio_init();
-}
-
-MACHINE_START(WM8505_7IN_NETBOOK, "WM8505 7-inch generic netbook")
-	.atag_offset	= 0x100,
-	.restart	= wmt_restart,
-	.reserve	= wm8505_reserve_mem,
-	.map_io		= wm8505_map_io,
-	.init_irq	= wm8505_init_irq,
-	.timer		= &vt8500_timer,
-	.init_machine	= wm8505_7in_init,
-MACHINE_END
