Merge tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Device tree conversions for samsung and tegra

Both platforms had some initial device tree support, but this adds
much more to actually make it usable.

* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (45 commits)
  ARM: dts: Add intial dts file for EXYNOS4210 SoC, SMDKV310 and ORIGEN
  ARM: EXYNOS: Add Exynos4 device tree enabled board file
  rtc: rtc-s3c: Add device tree support
  input: samsung-keypad: Add device tree support
  ARM: S5PV210: Modify platform data for pl330 driver
  ARM: S5PC100: Modify platform data for pl330 driver
  ARM: S5P64x0: Modify platform data for pl330 driver
  ARM: EXYNOS: Add a alias for pdma clocks
  ARM: EXYNOS: Limit usage of pl330 device instance to non-dt build
  ARM: SAMSUNG: Add device tree support for pl330 dma engine wrappers
  DMA: PL330: Add device tree support
  ARM: EXYNOS: Modify platform data for pl330 driver
  DMA: PL330: Infer transfer direction from transfer request instead of platform data
  DMA: PL330: move filter function into driver
  serial: samsung: Fix build for non-Exynos4210 devices
  serial: samsung: add device tree support
  serial: samsung: merge probe() function from all SoC specific extensions
  serial: samsung: merge all SoC specific port reset functions
  ARM: SAMSUNG: register uart clocks to clock lookup list
  serial: samsung: remove all uses of get_clksrc and set_clksrc
  ...

Fix up fairly trivial conflicts in arch/arm/mach-s3c2440/clock.c and
drivers/tty/serial/Kconfig both due to just adding code close to
changes.

7 files changed, 295 insertions, 234 deletions

diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index e1efbca2a539..b4bdf297e9fa 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -59,6 +59,11 @@ config EXYNOS4_MCT
         help
           Use MCT (Multi Core Timer) as kernel timers
 
+config EXYNOS4_DEV_DMA
+        bool
+        help
+          Compile in amba device definitions for DMA controller
+
 config EXYNOS4_DEV_AHCI
         bool
         help
@@ -179,6 +184,7 @@ config MACH_SMDKV310
         select SAMSUNG_DEV_BACKLIGHT
         select EXYNOS4_DEV_AHCI
         select SAMSUNG_DEV_KEYPAD
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_PD
         select SAMSUNG_DEV_PWM
         select EXYNOS4_DEV_SYSMMU
@@ -199,6 +205,7 @@ config MACH_ARMLEX4210
         select S3C_DEV_HSMMC2
         select S3C_DEV_HSMMC3
         select EXYNOS4_DEV_AHCI
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_SYSMMU
         select EXYNOS4_SETUP_SDHCI
         help
@@ -224,6 +231,7 @@ config MACH_UNIVERSAL_C210
         select S5P_DEV_MFC
         select S5P_DEV_ONENAND
         select S5P_DEV_TV
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_PD
         select EXYNOS4_SETUP_FIMD0
         select EXYNOS4_SETUP_I2C1
@@ -257,6 +265,7 @@ config MACH_NURI
         select S5P_DEV_MFC
         select S5P_DEV_USB_EHCI
         select S5P_SETUP_MIPIPHY
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_PD
         select EXYNOS4_SETUP_FIMC
         select EXYNOS4_SETUP_FIMD0
@@ -289,6 +298,7 @@ config MACH_ORIGEN
         select S5P_DEV_USB_EHCI
         select SAMSUNG_DEV_BACKLIGHT
         select SAMSUNG_DEV_PWM
+        select EXYNOS4_DEV_DMA
         select EXYNOS4_DEV_PD
         select EXYNOS4_SETUP_FIMD0
         select EXYNOS4_SETUP_SDHCI
@@ -329,6 +339,20 @@ config MACH_SMDK4412
           Machine support for Samsung SMDK4412
 endif
 
+comment "Flattened Device Tree based board for Exynos4 based SoC"
+
+config MACH_EXYNOS4_DT
+        bool "Samsung Exynos4 Machine using device tree"
+        select CPU_EXYNOS4210
+        select USE_OF
+        select ARM_AMBA
+        select HAVE_SAMSUNG_KEYPAD if INPUT_KEYBOARD
+        help
+          Machine support for Samsung Exynos4 machine with device tree enabled.
+          Select this if a fdt blob is available for the Exynos4 SoC based board.
+          Note: This is under development and not all peripherals can be supported
+          with this machine file.
+
 if ARCH_EXYNOS4
 
 comment "Configuration for HSMMC 8-bit bus width"
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index bcb9efc576e9..fd0d9e9be382 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -19,7 +19,7 @@ obj-$(CONFIG_SOC_EXYNOS4212)	+= clock-exynos4212.o
 obj-$(CONFIG_PM)                += pm.o
 obj-$(CONFIG_CPU_IDLE)          += cpuidle.o
 
-obj-$(CONFIG_ARCH_EXYNOS4)      += dma.o pmu.o
+obj-$(CONFIG_ARCH_EXYNOS4)      += pmu.o
 
 obj-$(CONFIG_SMP)               += platsmp.o headsmp.o
 
@@ -39,6 +39,8 @@ obj-$(CONFIG_MACH_ORIGEN)		+= mach-origen.o
 obj-$(CONFIG_MACH_SMDK4212)             += mach-smdk4x12.o
 obj-$(CONFIG_MACH_SMDK4412)             += mach-smdk4x12.o
 
+obj-$(CONFIG_MACH_EXYNOS4_DT)           += mach-exynos4-dt.o
+
 # device support
 
 obj-$(CONFIG_ARCH_EXYNOS4)              += dev-audio.o
@@ -46,6 +48,7 @@ obj-$(CONFIG_EXYNOS4_DEV_AHCI)		+= dev-ahci.o
 obj-$(CONFIG_EXYNOS4_DEV_PD)            += dev-pd.o
 obj-$(CONFIG_EXYNOS4_DEV_SYSMMU)        += dev-sysmmu.o
 obj-$(CONFIG_EXYNOS4_DEV_DWMCI)         += dev-dwmci.o
+obj-$(CONFIG_EXYNOS4_DEV_DMA)           += dma.o
 
 obj-$(CONFIG_ARCH_EXYNOS4)              += setup-i2c0.o
 obj-$(CONFIG_EXYNOS4_SETUP_FIMC)        += setup-fimc.o
diff --git a/arch/arm/mach-exynos/clock.c b/arch/arm/mach-exynos/clock.c
index 83616a039b15..befee4e13391 100644
--- a/arch/arm/mach-exynos/clock.c
+++ b/arch/arm/mach-exynos/clock.c
@@ -554,16 +554,6 @@ static struct clk init_clocks_off[] = {
                 .enable         = exynos4_clk_dac_ctrl,
                 .ctrlbit        = (1 << 0),
         }, {
-                .name           = "dma",
-                .devname        = "dma-pl330.0",
-                .enable         = exynos4_clk_ip_fsys_ctrl,
-                .ctrlbit        = (1 << 0),
-        }, {
-                .name           = "dma",
-                .devname        = "dma-pl330.1",
-                .enable         = exynos4_clk_ip_fsys_ctrl,
-                .ctrlbit        = (1 << 1),
-        }, {
                 .name           = "adc",
                 .enable         = exynos4_clk_ip_peril_ctrl,
                 .ctrlbit        = (1 << 15),
@@ -779,6 +769,20 @@ static struct clk init_clocks[] = {
         }
 };
 
+static struct clk clk_pdma0 = {
+        .name           = "dma",
+        .devname        = "dma-pl330.0",
+        .enable         = exynos4_clk_ip_fsys_ctrl,
+        .ctrlbit        = (1 << 0),
+};
+
+static struct clk clk_pdma1 = {
+        .name           = "dma",
+        .devname        = "dma-pl330.1",
+        .enable         = exynos4_clk_ip_fsys_ctrl,
+        .ctrlbit        = (1 << 1),
+};
+
 struct clk *clkset_group_list[] = {
         [0] = &clk_ext_xtal_mux,
         [1] = &clk_xusbxti,
@@ -1010,46 +1014,6 @@ static struct clksrc_clk clk_dout_mmc4 = {
 
 static struct clksrc_clk clksrcs[] = {
         {
-                .clk    = {
-                        .name           = "uclk1",
-                        .devname        = "s5pv210-uart.0",
-                        .enable         = exynos4_clksrc_mask_peril0_ctrl,
-                        .ctrlbit        = (1 << 0),
-                },
-                .sources = &clkset_group,
-                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 0, .size = 4 },
-                .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 0, .size = 4 },
-        }, {
-                .clk            = {
-                        .name           = "uclk1",
-                        .devname        = "s5pv210-uart.1",
-                        .enable         = exynos4_clksrc_mask_peril0_ctrl,
-                        .ctrlbit        = (1 << 4),
-                },
-                .sources = &clkset_group,
-                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 4, .size = 4 },
-                .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 4, .size = 4 },
-        }, {
-                .clk            = {
-                        .name           = "uclk1",
-                        .devname        = "s5pv210-uart.2",
-                        .enable         = exynos4_clksrc_mask_peril0_ctrl,
-                        .ctrlbit        = (1 << 8),
-                },
-                .sources = &clkset_group,
-                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 8, .size = 4 },
-                .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 8, .size = 4 },
-        }, {
-                .clk            = {
-                        .name           = "uclk1",
-                        .devname        = "s5pv210-uart.3",
-                        .enable         = exynos4_clksrc_mask_peril0_ctrl,
-                        .ctrlbit        = (1 << 12),
-                },
-                .sources = &clkset_group,
-                .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 12, .size = 4 },
-                .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 12, .size = 4 },
-        }, {
                 .clk            = {
                         .name           = "sclk_pwm",
                         .enable         = exynos4_clksrc_mask_peril0_ctrl,
@@ -1238,6 +1202,54 @@ static struct clksrc_clk clksrcs[] = {
         }
 };
 
+static struct clksrc_clk clk_sclk_uart0 = {
+        .clk    = {
+                .name           = "uclk1",
+                .devname        = "exynos4210-uart.0",
+                .enable         = exynos4_clksrc_mask_peril0_ctrl,
+                .ctrlbit        = (1 << 0),
+        },
+        .sources = &clkset_group,
+        .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 0, .size = 4 },
+        .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 0, .size = 4 },
+};
+
+static struct clksrc_clk clk_sclk_uart1 = {
+        .clk            = {
+                .name           = "uclk1",
+                .devname        = "exynos4210-uart.1",
+                .enable         = exynos4_clksrc_mask_peril0_ctrl,
+                .ctrlbit        = (1 << 4),
+        },
+        .sources = &clkset_group,
+        .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 4, .size = 4 },
+        .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 4, .size = 4 },
+};
+
+static struct clksrc_clk clk_sclk_uart2 = {
+        .clk            = {
+                .name           = "uclk1",
+                .devname        = "exynos4210-uart.2",
+                .enable         = exynos4_clksrc_mask_peril0_ctrl,
+                .ctrlbit        = (1 << 8),
+        },
+        .sources = &clkset_group,
+        .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 8, .size = 4 },
+        .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 8, .size = 4 },
+};
+
+static struct clksrc_clk clk_sclk_uart3 = {
+        .clk            = {
+                .name           = "uclk1",
+                .devname        = "exynos4210-uart.3",
+                .enable         = exynos4_clksrc_mask_peril0_ctrl,
+                .ctrlbit        = (1 << 12),
+        },
+        .sources = &clkset_group,
+        .reg_src = { .reg = S5P_CLKSRC_PERIL0, .shift = 12, .size = 4 },
+        .reg_div = { .reg = S5P_CLKDIV_PERIL0, .shift = 12, .size = 4 },
+};
+
 /* Clock initialization code */
 static struct clksrc_clk *sysclks[] = {
         &clk_mout_apll,
@@ -1272,6 +1284,27 @@ static struct clksrc_clk *sysclks[] = {
         &clk_mout_mfc1,
 };
 
+static struct clk *clk_cdev[] = {
+        &clk_pdma0,
+        &clk_pdma1,
+};
+
+static struct clksrc_clk *clksrc_cdev[] = {
+        &clk_sclk_uart0,
+        &clk_sclk_uart1,
+        &clk_sclk_uart2,
+        &clk_sclk_uart3,
+};
+
+static struct clk_lookup exynos4_clk_lookup[] = {
+        CLKDEV_INIT("exynos4210-uart.0", "clk_uart_baud0", &clk_sclk_uart0.clk),
+        CLKDEV_INIT("exynos4210-uart.1", "clk_uart_baud0", &clk_sclk_uart1.clk),
+        CLKDEV_INIT("exynos4210-uart.2", "clk_uart_baud0", &clk_sclk_uart2.clk),
+        CLKDEV_INIT("exynos4210-uart.3", "clk_uart_baud0", &clk_sclk_uart3.clk),
+        CLKDEV_INIT("dma-pl330.0", "apb_pclk", &clk_pdma0),
+        CLKDEV_INIT("dma-pl330.1", "apb_pclk", &clk_pdma1),
+};
+
 static int xtal_rate;
 
 static unsigned long exynos4_fout_apll_get_rate(struct clk *clk)
@@ -1479,11 +1512,19 @@ void __init exynos4_register_clocks(void)
         for (ptr = 0; ptr < ARRAY_SIZE(sclk_tv); ptr++)
                 s3c_register_clksrc(sclk_tv[ptr], 1);
 
+        for (ptr = 0; ptr < ARRAY_SIZE(clksrc_cdev); ptr++)
+                s3c_register_clksrc(clksrc_cdev[ptr], 1);
+
         s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
         s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
 
+        s3c24xx_register_clocks(clk_cdev, ARRAY_SIZE(clk_cdev));
+        for (ptr = 0; ptr < ARRAY_SIZE(clk_cdev); ptr++)
+                s3c_disable_clocks(clk_cdev[ptr], 1);
+
         s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
         s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
+        clkdev_add_table(exynos4_clk_lookup, ARRAY_SIZE(exynos4_clk_lookup));
 
         register_syscore_ops(&exynos4_clock_syscore_ops);
         s3c24xx_register_clock(&dummy_apb_pclk);
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 647c8434610c..c59e18871006 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -17,6 +17,8 @@
 #include <linux/gpio.h>
 #include <linux/sched.h>
 #include <linux/serial_core.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
 
 #include <asm/proc-fns.h>
 #include <asm/exception.h>
@@ -385,6 +387,13 @@ static void __init combiner_init(unsigned int combiner_nr, void __iomem *base,
         }
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id exynos4_dt_irq_match[] = {
+        { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+        {},
+};
+#endif
+
 void __init exynos4_init_irq(void)
 {
         int irq;
@@ -392,7 +401,12 @@ void __init exynos4_init_irq(void)
 
         gic_bank_offset = soc_is_exynos4412() ? 0x4000 : 0x8000;
 
-        gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset);
+        if (!of_have_populated_dt())
+                gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset);
+#ifdef CONFIG_OF
+        else
+                of_irq_init(exynos4_dt_irq_match);
+#endif
 
         for (irq = 0; irq < MAX_COMBINER_NR; irq++) {
 
@@ -460,15 +474,6 @@ int __init exynos_init(void)
         return device_register(&exynos4_dev);
 }
 
-static struct s3c24xx_uart_clksrc exynos4_serial_clocks[] = {
-        [0] = {
-                .name           = "uclk1",
-                .divisor        = 1,
-                .min_baud       = 0,
-                .max_baud       = 0,
-        },
-};
-
 /* uart registration process */
 
 void __init exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no)
@@ -476,16 +481,10 @@ void __init exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no)
         struct s3c2410_uartcfg *tcfg = cfg;
         u32 ucnt;
 
-        for (ucnt = 0; ucnt < no; ucnt++, tcfg++) {
-                if (!tcfg->clocks) {
-                        tcfg->has_fracval = 1;
-                        tcfg->clocks = exynos4_serial_clocks;
-                        tcfg->clocks_size = ARRAY_SIZE(exynos4_serial_clocks);
-                }
-                tcfg->flags |= NO_NEED_CHECK_CLKSRC;
-        }
+        for (ucnt = 0; ucnt < no; ucnt++, tcfg++)
+                tcfg->has_fracval = 1;
 
-        s3c24xx_init_uartdevs("s5pv210-uart", s5p_uart_resources, cfg, no);
+        s3c24xx_init_uartdevs("exynos4210-uart", s5p_uart_resources, cfg, no);
 }
 
 static DEFINE_SPINLOCK(eint_lock);
diff --git a/arch/arm/mach-exynos/dma.c b/arch/arm/mach-exynos/dma.c
index 9667c61e64fb..b10fcd270f07 100644
--- a/arch/arm/mach-exynos/dma.c
+++ b/arch/arm/mach-exynos/dma.c
@@ -24,6 +24,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/amba/bus.h>
 #include <linux/amba/pl330.h>
+#include <linux/of.h>
 
 #include <asm/irq.h>
 #include <plat/devs.h>
@@ -35,95 +36,42 @@
 
 static u64 dma_dmamask = DMA_BIT_MASK(32);
 
-struct dma_pl330_peri pdma0_peri[28] = {
-        {
-                .peri_id = (u8)DMACH_PCM0_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_PCM0_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_PCM2_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_PCM2_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_MSM_REQ0,
-        }, {
-                .peri_id = (u8)DMACH_MSM_REQ2,
-        }, {
-                .peri_id = (u8)DMACH_SPI0_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SPI0_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_SPI2_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SPI2_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_I2S0S_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_I2S0_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_I2S0_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_UART0_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_UART0_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_UART2_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_UART2_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_UART4_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_UART4_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS0_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS0_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS2_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS2_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS4_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS4_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_AC97_MICIN,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_AC97_PCMIN,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_AC97_PCMOUT,
-                .rqtype = MEMTODEV,
-        },
+u8 pdma0_peri[] = {
+        DMACH_PCM0_RX,
+        DMACH_PCM0_TX,
+        DMACH_PCM2_RX,
+        DMACH_PCM2_TX,
+        DMACH_MSM_REQ0,
+        DMACH_MSM_REQ2,
+        DMACH_SPI0_RX,
+        DMACH_SPI0_TX,
+        DMACH_SPI2_RX,
+        DMACH_SPI2_TX,
+        DMACH_I2S0S_TX,
+        DMACH_I2S0_RX,
+        DMACH_I2S0_TX,
+        DMACH_I2S2_RX,
+        DMACH_I2S2_TX,
+        DMACH_UART0_RX,
+        DMACH_UART0_TX,
+        DMACH_UART2_RX,
+        DMACH_UART2_TX,
+        DMACH_UART4_RX,
+        DMACH_UART4_TX,
+        DMACH_SLIMBUS0_RX,
+        DMACH_SLIMBUS0_TX,
+        DMACH_SLIMBUS2_RX,
+        DMACH_SLIMBUS2_TX,
+        DMACH_SLIMBUS4_RX,
+        DMACH_SLIMBUS4_TX,
+        DMACH_AC97_MICIN,
+        DMACH_AC97_PCMIN,
+        DMACH_AC97_PCMOUT,
 };
 
 struct dma_pl330_platdata exynos4_pdma0_pdata = {
         .nr_valid_peri = ARRAY_SIZE(pdma0_peri),
-        .peri = pdma0_peri,
+        .peri_id = pdma0_peri,
 };
 
 struct amba_device exynos4_device_pdma0 = {
@@ -142,86 +90,37 @@ struct amba_device exynos4_device_pdma0 = {
         .periphid = 0x00041330,
 };
 
-struct dma_pl330_peri pdma1_peri[25] = {
-        {
-                .peri_id = (u8)DMACH_PCM0_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_PCM0_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_PCM1_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_PCM1_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_MSM_REQ1,
-        }, {
-                .peri_id = (u8)DMACH_MSM_REQ3,
-        }, {
-                .peri_id = (u8)DMACH_SPI1_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SPI1_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_I2S0S_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_I2S0_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_I2S0_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_I2S1_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_I2S1_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_UART0_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_UART0_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_UART1_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_UART1_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_UART3_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_UART3_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS1_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS1_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS3_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS3_TX,
-                .rqtype = MEMTODEV,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS5_RX,
-                .rqtype = DEVTOMEM,
-        }, {
-                .peri_id = (u8)DMACH_SLIMBUS5_TX,
-                .rqtype = MEMTODEV,
-        },
+u8 pdma1_peri[] = {
+        DMACH_PCM0_RX,
+        DMACH_PCM0_TX,
+        DMACH_PCM1_RX,
+        DMACH_PCM1_TX,
+        DMACH_MSM_REQ1,
+        DMACH_MSM_REQ3,
+        DMACH_SPI1_RX,
+        DMACH_SPI1_TX,
+        DMACH_I2S0S_TX,
+        DMACH_I2S0_RX,
+        DMACH_I2S0_TX,
+        DMACH_I2S1_RX,
+        DMACH_I2S1_TX,
+        DMACH_UART0_RX,
+        DMACH_UART0_TX,
+        DMACH_UART1_RX,
+        DMACH_UART1_TX,
+        DMACH_UART3_RX,
+        DMACH_UART3_TX,
+        DMACH_SLIMBUS1_RX,
+        DMACH_SLIMBUS1_TX,
+        DMACH_SLIMBUS3_RX,
+        DMACH_SLIMBUS3_TX,
+        DMACH_SLIMBUS5_RX,
+        DMACH_SLIMBUS5_TX,
 };
 
 struct dma_pl330_platdata exynos4_pdma1_pdata = {
         .nr_valid_peri = ARRAY_SIZE(pdma1_peri),
-        .peri = pdma1_peri,
+        .peri_id = pdma1_peri,
 };
 
 struct amba_device exynos4_device_pdma1 = {
@@ -242,7 +141,15 @@ struct amba_device exynos4_device_pdma1 = {
 
 static int __init exynos4_dma_init(void)
 {
+        if (of_have_populated_dt())
+                return 0;
+
+        dma_cap_set(DMA_SLAVE, exynos4_pdma0_pdata.cap_mask);
+        dma_cap_set(DMA_CYCLIC, exynos4_pdma0_pdata.cap_mask);
         amba_device_register(&exynos4_device_pdma0, &iomem_resource);
+
+        dma_cap_set(DMA_SLAVE, exynos4_pdma1_pdata.cap_mask);
+        dma_cap_set(DMA_CYCLIC, exynos4_pdma1_pdata.cap_mask);
         amba_device_register(&exynos4_device_pdma1, &iomem_resource);
 
         return 0;
diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h
index dfd4b7eecb90..713dd5251c64 100644
--- a/arch/arm/mach-exynos/include/mach/irqs.h
+++ b/arch/arm/mach-exynos/include/mach/irqs.h
@@ -17,13 +17,13 @@
 
 /* PPI: Private Peripheral Interrupt */
 
-#define IRQ_PPI(x)              S5P_IRQ(x+16)
+#define IRQ_PPI(x)              (x+16)
 
 #define IRQ_MCT_LOCALTIMER      IRQ_PPI(12)
 
 /* SPI: Shared Peripheral Interrupt */
 
-#define IRQ_SPI(x)              S5P_IRQ(x+32)
+#define IRQ_SPI(x)              (x+32)
 
 #define IRQ_EINT0               IRQ_SPI(16)
 #define IRQ_EINT1               IRQ_SPI(17)
@@ -163,7 +163,9 @@
 #define IRQ_GPIO2_NR_GROUPS     9
 #define IRQ_GPIO_END            (S5P_GPIOINT_BASE + S5P_GPIOINT_COUNT)
 
+#define IRQ_TIMER_BASE          (IRQ_GPIO_END + 64)
+
 /* Set the default NR_IRQS */
-#define NR_IRQS                 (IRQ_GPIO_END + 64)
+#define NR_IRQS                 (IRQ_TIMER_BASE + IRQ_TIMER_COUNT)
 
 #endif /* __ASM_ARCH_IRQS_H */
diff --git a/arch/arm/mach-exynos/mach-exynos4-dt.c b/arch/arm/mach-exynos/mach-exynos4-dt.c
new file mode 100644
index 000000000000..85fa02767d67
--- /dev/null
+++ b/arch/arm/mach-exynos/mach-exynos4-dt.c
@@ -0,0 +1,85 @@
+/*
+ * Samsung's Exynos4210 flattened device tree enabled machine
+ *
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ *              http://www.samsung.com
+ * Copyright (c) 2010-2011 Linaro Ltd.
+ *              www.linaro.org
+ *
+ * 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 <linux/of_platform.h>
+#include <linux/serial_core.h>
+
+#include <asm/mach/arch.h>
+#include <mach/map.h>
+
+#include <plat/cpu.h>
+#include <plat/regs-serial.h>
+#include <plat/exynos4.h>
+
+/*
+ * The following lookup table is used to override device names when devices
+ * are registered from device tree. This is temporarily added to enable
+ * device tree support addition for the Exynos4 architecture.
+ *
+ * For drivers that require platform data to be provided from the machine
+ * file, a platform data pointer can also be supplied along with the
+ * devices names. Usually, the platform data elements that cannot be parsed
+ * from the device tree by the drivers (example: function pointers) are
+ * supplied. But it should be noted that this is a temporary mechanism and
+ * at some point, the drivers should be capable of parsing all the platform
+ * data from the device tree.
+ */
+static const struct of_dev_auxdata exynos4210_auxdata_lookup[] __initconst = {
+        OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART0,
+                                "exynos4210-uart.0", NULL),
+        OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART1,
+                                "exynos4210-uart.1", NULL),
+        OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART2,
+                                "exynos4210-uart.2", NULL),
+        OF_DEV_AUXDATA("samsung,exynos4210-uart", S5P_PA_UART3,
+                                "exynos4210-uart.3", NULL),
+        OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0),
+                                "exynos4-sdhci.0", NULL),
+        OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1),
+                                "exynos4-sdhci.1", NULL),
+        OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2),
+                                "exynos4-sdhci.2", NULL),
+        OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3),
+                                "exynos4-sdhci.3", NULL),
+        OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0),
+                                "s3c2440-i2c.0", NULL),
+        OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),
+        OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL),
+        {},
+};
+
+static void __init exynos4210_dt_map_io(void)
+{
+        s5p_init_io(NULL, 0, S5P_VA_CHIPID);
+        s3c24xx_init_clocks(24000000);
+}
+
+static void __init exynos4210_dt_machine_init(void)
+{
+        of_platform_populate(NULL, of_default_bus_match_table,
+                                exynos4210_auxdata_lookup, NULL);
+}
+
+static char const *exynos4210_dt_compat[] __initdata = {
+        "samsung,exynos4210",
+        NULL
+};
+
+DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
+        /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
+        .init_irq       = exynos4_init_irq,
+        .map_io         = exynos4210_dt_map_io,
+        .init_machine   = exynos4210_dt_machine_init,
+        .timer          = &exynos4_timer,
+        .dt_compat      = exynos4210_dt_compat,
+MACHINE_END