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

Pull "ARM: device tree work" from Arnd Bergmann:
 "Most of these patches convert code from using static platform data to
  describing the hardware in the device tree.  This is only the first
  half of the changes for v3.4 because a lot of patches for this topic
  came in the last week before the merge window.

  Signed-off-by: Arnd Bergmann <arnd@arndb.de>"

Fix up trivial conflicts in arch/arm/mach-vexpress/{Kconfig,core.h}

* tag 'dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (86 commits)
  Document: devicetree: add OF documents for arch-mmp
  ARM: dts: append DTS file of pxa168
  ARM: mmp: append OF support on pxa168
  ARM: mmp: enable rtc clk in pxa168
  i2c: pxa: add OF support
  serial: pxa: add OF support
  arm/dts: mt_ventoux: very basic support for TeeJet Mt.Ventoux board
  ARM: OMAP2+: Remove extra ifdefs for board-generic
  ARM: OMAP2+: Fix build error when only ARCH_OMAP2/3 or 4 is selected
  ASoC: DT: Add digital microphone binding to PAZ00 board.
  ARM: dt: Add ARM PMU to tegra*.dtsi
  ARM: at91: at91sam9x5cm/dt: add leds support
  ARM: at91: usb_a9g20/dt: add gpio-keys support
  ARM: at91: at91sam9m10g45ek/dt: add gpio-keys support
  ARM: at91: at91sam9m10g45ek/dt: add leds support
  ARM: at91: usb_a9g20/dt: add leds support
  ARM: at91/pio: add new PIO3 features
  ARM: at91: add sam9_smc.o to at91sam9x5 build
  ARM: at91/tc/clocksource: Add 32 bit variant to Timer Counter
  ARM: at91/tc: add device tree support to atmel_tclib
  ...

11 files changed, 275 insertions, 143 deletions

diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c
index 55d0f95f82f..32cb929b8eb 100644
--- a/drivers/clocksource/tcb_clksrc.c
+++ b/drivers/clocksource/tcb_clksrc.c
@@ -19,6 +19,8 @@
  *   - Two channels combine to create a free-running 32 bit counter
  *     with a base rate of 5+ MHz, packaged as a clocksource (with
  *     resolution better than 200 nsec).
+ *   - Some chips support 32 bit counter. A single channel is used for
+ *     this 32 bit free-running counter. the second channel is not used.
  *
  *   - The third channel may be used to provide a 16-bit clockevent
  *     source, used in either periodic or oneshot mode.  This runs
@@ -54,6 +56,11 @@ static cycle_t tc_get_cycles(struct clocksource *cs)
 	return (upper << 16) | lower;
 }
 
+static cycle_t tc_get_cycles32(struct clocksource *cs)
+{
+	return __raw_readl(tcaddr + ATMEL_TC_REG(0, CV));
+}
+
 static struct clocksource clksrc = {
 	.name           = "tcb_clksrc",
 	.rating         = 200,
@@ -209,6 +216,48 @@ static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
 
 #endif
 
+static void __init tcb_setup_dual_chan(struct atmel_tc *tc, int mck_divisor_idx)
+{
+	/* channel 0:  waveform mode, input mclk/8, clock TIOA0 on overflow */
+	__raw_writel(mck_divisor_idx			/* likely divide-by-8 */
+			| ATMEL_TC_WAVE
+			| ATMEL_TC_WAVESEL_UP		/* free-run */
+			| ATMEL_TC_ACPA_SET		/* TIOA0 rises at 0 */
+			| ATMEL_TC_ACPC_CLEAR,		/* (duty cycle 50%) */
+			tcaddr + ATMEL_TC_REG(0, CMR));
+	__raw_writel(0x0000, tcaddr + ATMEL_TC_REG(0, RA));
+	__raw_writel(0x8000, tcaddr + ATMEL_TC_REG(0, RC));
+	__raw_writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR));	/* no irqs */
+	__raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
+
+	/* channel 1:  waveform mode, input TIOA0 */
+	__raw_writel(ATMEL_TC_XC1			/* input: TIOA0 */
+			| ATMEL_TC_WAVE
+			| ATMEL_TC_WAVESEL_UP,		/* free-run */
+			tcaddr + ATMEL_TC_REG(1, CMR));
+	__raw_writel(0xff, tcaddr + ATMEL_TC_REG(1, IDR));	/* no irqs */
+	__raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(1, CCR));
+
+	/* chain channel 0 to channel 1*/
+	__raw_writel(ATMEL_TC_TC1XC1S_TIOA0, tcaddr + ATMEL_TC_BMR);
+	/* then reset all the timers */
+	__raw_writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
+}
+
+static void __init tcb_setup_single_chan(struct atmel_tc *tc, int mck_divisor_idx)
+{
+	/* channel 0:  waveform mode, input mclk/8 */
+	__raw_writel(mck_divisor_idx			/* likely divide-by-8 */
+			| ATMEL_TC_WAVE
+			| ATMEL_TC_WAVESEL_UP,		/* free-run */
+			tcaddr + ATMEL_TC_REG(0, CMR));
+	__raw_writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR));	/* no irqs */
+	__raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
+
+	/* then reset all the timers */
+	__raw_writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
+}
+
 static int __init tcb_clksrc_init(void)
 {
 	static char bootinfo[] __initdata
@@ -260,34 +309,19 @@ static int __init tcb_clksrc_init(void)
 			divided_rate / 1000000,
 			((divided_rate + 500000) % 1000000) / 1000);
 
-	/* tclib will give us three clocks no matter what the
-	 * underlying platform supports.
-	 */
-	clk_enable(tc->clk[1]);
-
-	/* channel 0:  waveform mode, input mclk/8, clock TIOA0 on overflow */
-	__raw_writel(best_divisor_idx			/* likely divide-by-8 */
-			| ATMEL_TC_WAVE
-			| ATMEL_TC_WAVESEL_UP		/* free-run */
-			| ATMEL_TC_ACPA_SET		/* TIOA0 rises at 0 */
-			| ATMEL_TC_ACPC_CLEAR,		/* (duty cycle 50%) */
-			tcaddr + ATMEL_TC_REG(0, CMR));
-	__raw_writel(0x0000, tcaddr + ATMEL_TC_REG(0, RA));
-	__raw_writel(0x8000, tcaddr + ATMEL_TC_REG(0, RC));
-	__raw_writel(0xff, tcaddr + ATMEL_TC_REG(0, IDR));	/* no irqs */
-	__raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(0, CCR));
-
-	/* channel 1:  waveform mode, input TIOA0 */
-	__raw_writel(ATMEL_TC_XC1			/* input: TIOA0 */
-			| ATMEL_TC_WAVE
-			| ATMEL_TC_WAVESEL_UP,		/* free-run */
-			tcaddr + ATMEL_TC_REG(1, CMR));
-	__raw_writel(0xff, tcaddr + ATMEL_TC_REG(1, IDR));	/* no irqs */
-	__raw_writel(ATMEL_TC_CLKEN, tcaddr + ATMEL_TC_REG(1, CCR));
-
-	/* chain channel 0 to channel 1, then reset all the timers */
-	__raw_writel(ATMEL_TC_TC1XC1S_TIOA0, tcaddr + ATMEL_TC_BMR);
-	__raw_writel(ATMEL_TC_SYNC, tcaddr + ATMEL_TC_BCR);
+	if (tc->tcb_config && tc->tcb_config->counter_width == 32) {
+		/* use apropriate function to read 32 bit counter */
+		clksrc.read = tc_get_cycles32;
+		/* setup ony channel 0 */
+		tcb_setup_single_chan(tc, best_divisor_idx);
+	} else {
+		/* tclib will give us three clocks no matter what the
+		 * underlying platform supports.
+		 */
+		clk_enable(tc->clk[1]);
+		/* setup both channel 0 & 1 */
+		tcb_setup_dual_chan(tc, best_divisor_idx);
+	}
 
 	/* and away we go! */
 	clocksource_register_hz(&clksrc, divided_rate);
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index d6036465099..f6733267fa9 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -29,6 +29,8 @@
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/i2c-pxa.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/of_i2c.h>
 #include <linux/platform_device.h>
 #include <linux/err.h>
@@ -1044,23 +1046,60 @@ static const struct i2c_algorithm i2c_pxa_pio_algorithm = {
 	.functionality	= i2c_pxa_functionality,
 };
 
-static int i2c_pxa_probe(struct platform_device *dev)
+static struct of_device_id i2c_pxa_dt_ids[] = {
+	{ .compatible = "mrvl,pxa-i2c", .data = (void *)REGS_PXA2XX },
+	{ .compatible = "mrvl,pwri2c", .data = (void *)REGS_PXA3XX },
+	{ .compatible = "mrvl,mmp-twsi", .data = (void *)REGS_PXA2XX },
+	{}
+};
+MODULE_DEVICE_TABLE(of, i2c_pxa_dt_ids);
+
+static int i2c_pxa_probe_dt(struct platform_device *pdev, struct pxa_i2c *i2c,
+			    enum pxa_i2c_types *i2c_types)
 {
-	struct pxa_i2c *i2c;
-	struct resource *res;
-	struct i2c_pxa_platform_data *plat = dev->dev.platform_data;
-	const struct platform_device_id *id = platform_get_device_id(dev);
-	enum pxa_i2c_types i2c_type = id->driver_data;
+	struct device_node *np = pdev->dev.of_node;
+	const struct of_device_id *of_id =
+			of_match_device(i2c_pxa_dt_ids, &pdev->dev);
 	int ret;
-	int irq;
 
-	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
-	irq = platform_get_irq(dev, 0);
-	if (res == NULL || irq < 0)
-		return -ENODEV;
+	if (!of_id)
+		return 1;
+	ret = of_alias_get_id(np, "i2c");
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to get alias id, errno %d\n", ret);
+		return ret;
+	}
+	pdev->id = ret;
+	if (of_get_property(np, "mrvl,i2c-polling", NULL))
+		i2c->use_pio = 1;
+	if (of_get_property(np, "mrvl,i2c-fast-mode", NULL))
+		i2c->fast_mode = 1;
+	*i2c_types = (u32)(of_id->data);
+	return 0;
+}
 
-	if (!request_mem_region(res->start, resource_size(res), res->name))
-		return -ENOMEM;
+static int i2c_pxa_probe_pdata(struct platform_device *pdev,
+			       struct pxa_i2c *i2c,
+			       enum pxa_i2c_types *i2c_types)
+{
+	struct i2c_pxa_platform_data *plat = pdev->dev.platform_data;
+	const struct platform_device_id *id = platform_get_device_id(pdev);
+
+	*i2c_types = id->driver_data;
+	if (plat) {
+		i2c->use_pio = plat->use_pio;
+		i2c->fast_mode = plat->fast_mode;
+	}
+	return 0;
+}
+
+static int i2c_pxa_probe(struct platform_device *dev)
+{
+	struct i2c_pxa_platform_data *plat = dev->dev.platform_data;
+	enum pxa_i2c_types i2c_type;
+	struct pxa_i2c *i2c;
+	struct resource *res = NULL;
+	int ret, irq;
 
 	i2c = kzalloc(sizeof(struct pxa_i2c), GFP_KERNEL);
 	if (!i2c) {
@@ -1068,6 +1107,24 @@ static int i2c_pxa_probe(struct platform_device *dev)
 		goto emalloc;
 	}
 
+	ret = i2c_pxa_probe_dt(dev, i2c, &i2c_type);
+	if (ret > 0)
+		ret = i2c_pxa_probe_pdata(dev, i2c, &i2c_type);
+	if (ret < 0)
+		goto eclk;
+
+	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	irq = platform_get_irq(dev, 0);
+	if (res == NULL || irq < 0) {
+		ret = -ENODEV;
+		goto eclk;
+	}
+
+	if (!request_mem_region(res->start, resource_size(res), res->name)) {
+		ret = -ENOMEM;
+		goto eclk;
+	}
+
 	i2c->adap.owner   = THIS_MODULE;
 	i2c->adap.retries = 5;
 
@@ -1109,21 +1166,16 @@ static int i2c_pxa_probe(struct platform_device *dev)
 
 	i2c->slave_addr = I2C_PXA_SLAVE_ADDR;
 
-#ifdef CONFIG_I2C_PXA_SLAVE
 	if (plat) {
+#ifdef CONFIG_I2C_PXA_SLAVE
 		i2c->slave_addr = plat->slave_addr;
 		i2c->slave = plat->slave;
-	}
 #endif
-
-	clk_enable(i2c->clk);
-
-	if (plat) {
 		i2c->adap.class = plat->class;
-		i2c->use_pio = plat->use_pio;
-		i2c->fast_mode = plat->fast_mode;
 	}
 
+	clk_enable(i2c->clk);
+
 	if (i2c->use_pio) {
 		i2c->adap.algo = &i2c_pxa_pio_algorithm;
 	} else {
@@ -1234,6 +1286,7 @@ static struct platform_driver i2c_pxa_driver = {
 		.name	= "pxa2xx-i2c",
 		.owner	= THIS_MODULE,
 		.pm	= I2C_PXA_DEV_PM_OPS,
+		.of_match_table = i2c_pxa_dt_ids,
 	},
 	.id_table	= i2c_pxa_id_table,
 };
diff --git a/drivers/misc/atmel_tclib.c b/drivers/misc/atmel_tclib.c
index 4bcfc375973..c8d8e38d0d8 100644
--- a/drivers/misc/atmel_tclib.c
+++ b/drivers/misc/atmel_tclib.c
@@ -6,12 +6,10 @@
 #include <linux/ioport.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
+#include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/export.h>
-
-/* Number of bytes to reserve for the iomem resource */
-#define ATMEL_TC_IOMEM_SIZE	256
-
+#include <linux/of.h>
 
 /*
  * This is a thin library to solve the problem of how to portably allocate
@@ -48,10 +46,17 @@ struct atmel_tc *atmel_tc_alloc(unsigned block, const char *name)
 	struct atmel_tc		*tc;
 	struct platform_device	*pdev = NULL;
 	struct resource		*r;
+	size_t			size;
 
 	spin_lock(&tc_list_lock);
 	list_for_each_entry(tc, &tc_list, node) {
-		if (tc->pdev->id == block) {
+		if (tc->pdev->dev.of_node) {
+			if (of_alias_get_id(tc->pdev->dev.of_node, "tcb")
+					== block) {
+				pdev = tc->pdev;
+				break;
+			}
+		} else if (tc->pdev->id == block) {
 			pdev = tc->pdev;
 			break;
 		}
@@ -61,11 +66,15 @@ struct atmel_tc *atmel_tc_alloc(unsigned block, const char *name)
 		goto fail;
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	r = request_mem_region(r->start, ATMEL_TC_IOMEM_SIZE, name);
 	if (!r)
 		goto fail;
 
-	tc->regs = ioremap(r->start, ATMEL_TC_IOMEM_SIZE);
+	size = resource_size(r);
+	r = request_mem_region(r->start, size, name);
+	if (!r)
+		goto fail;
+
+	tc->regs = ioremap(r->start, size);
 	if (!tc->regs)
 		goto fail_ioremap;
 
@@ -76,7 +85,7 @@ out:
 	return tc;
 
 fail_ioremap:
-	release_mem_region(r->start, ATMEL_TC_IOMEM_SIZE);
+	release_mem_region(r->start, size);
 fail:
 	tc = NULL;
 	goto out;
@@ -96,7 +105,7 @@ void atmel_tc_free(struct atmel_tc *tc)
 	spin_lock(&tc_list_lock);
 	if (tc->regs) {
 		iounmap(tc->regs);
-		release_mem_region(tc->iomem->start, ATMEL_TC_IOMEM_SIZE);
+		release_mem_region(tc->iomem->start, resource_size(tc->iomem));
 		tc->regs = NULL;
 		tc->iomem = NULL;
 	}
@@ -104,6 +113,30 @@ void atmel_tc_free(struct atmel_tc *tc)
 }
 EXPORT_SYMBOL_GPL(atmel_tc_free);
 
+#if defined(CONFIG_OF)
+static struct atmel_tcb_config tcb_rm9200_config = {
+	.counter_width = 16,
+};
+
+static struct atmel_tcb_config tcb_sam9x5_config = {
+	.counter_width = 32,
+};
+
+static const struct of_device_id atmel_tcb_dt_ids[] = {
+	{
+		.compatible = "atmel,at91rm9200-tcb",
+		.data = &tcb_rm9200_config,
+	}, {
+		.compatible = "atmel,at91sam9x5-tcb",
+		.data = &tcb_sam9x5_config,
+	}, {
+		/* sentinel */
+	}
+};
+
+MODULE_DEVICE_TABLE(of, atmel_tcb_dt_ids);
+#endif
+
 static int __init tc_probe(struct platform_device *pdev)
 {
 	struct atmel_tc *tc;
@@ -129,6 +162,14 @@ static int __init tc_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
+	/* Now take SoC information if available */
+	if (pdev->dev.of_node) {
+		const struct of_device_id *match;
+		match = of_match_node(atmel_tcb_dt_ids, pdev->dev.of_node);
+		if (match)
+			tc->tcb_config = match->data;
+	}
+
 	tc->clk[0] = clk;
 	tc->clk[1] = clk_get(&pdev->dev, "t1_clk");
 	if (IS_ERR(tc->clk[1]))
@@ -153,7 +194,10 @@ static int __init tc_probe(struct platform_device *pdev)
 }
 
 static struct platform_driver tc_driver = {
-	.driver.name	= "atmel_tcb",
+	.driver = {
+		.name	= "atmel_tcb",
+		.of_match_table	= of_match_ptr(atmel_tcb_dt_ids),
+	},
 };
 
 static int __init tc_init(void)
diff --git a/drivers/pcmcia/at91_cf.c b/drivers/pcmcia/at91_cf.c
index 4902206f53d..1dd68f50263 100644
--- a/drivers/pcmcia/at91_cf.c
+++ b/drivers/pcmcia/at91_cf.c
@@ -26,6 +26,7 @@
 
 #include <mach/board.h>
 #include <mach/at91rm9200_mc.h>
+#include <mach/at91_ramc.h>
 
 
 /*
@@ -156,7 +157,7 @@ static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
 	/*
 	 * Use 16 bit accesses unless/until we need 8-bit i/o space.
 	 */
-	csr = at91_sys_read(AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW;
+	csr = at91_ramc_read(0, AT91_SMC_CSR(cf->board->chipselect)) & ~AT91_SMC_DBW;
 
 	/*
 	 * NOTE: this CF controller ignores IOIS16, so we can't really do
@@ -175,7 +176,7 @@ static int at91_cf_set_io_map(struct pcmcia_socket *s, struct pccard_io_map *io)
 		csr |= AT91_SMC_DBW_16;
 		pr_debug("%s: 16bit i/o bus\n", driver_name);
 	}
-	at91_sys_write(AT91_SMC_CSR(cf->board->chipselect), csr);
+	at91_ramc_write(0, AT91_SMC_CSR(cf->board->chipselect), csr);
 
 	io->start = cf->socket.io_offset;
 	io->stop = io->start + SZ_2K - 1;
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 274a0aafe42..831868904e0 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -57,6 +57,7 @@ struct sam9_rtc {
 	void __iomem		*rtt;
 	struct rtc_device	*rtcdev;
 	u32			imr;
+	void __iomem		*gpbr;
 };
 
 #define rtt_readl(rtc, field) \
@@ -65,9 +66,9 @@ struct sam9_rtc {
 	__raw_writel((val), (rtc)->rtt + AT91_RTT_ ## field)
 
 #define gpbr_readl(rtc) \
-	at91_sys_read(AT91_GPBR + 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR)
+	__raw_readl((rtc)->gpbr)
 #define gpbr_writel(rtc, val) \
-	at91_sys_write(AT91_GPBR + 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR, (val))
+	__raw_writel((val), (rtc)->gpbr)
 
 /*
  * Read current time and date in RTC
@@ -287,16 +288,19 @@ static const struct rtc_class_ops at91_rtc_ops = {
 /*
  * Initialize and install RTC driver
  */
-static int __init at91_rtc_probe(struct platform_device *pdev)
+static int __devinit at91_rtc_probe(struct platform_device *pdev)
 {
-	struct resource	*r;
+	struct resource	*r, *r_gpbr;
 	struct sam9_rtc	*rtc;
 	int		ret;
 	u32		mr;
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!r)
+	r_gpbr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+	if (!r || !r_gpbr) {
+		dev_err(&pdev->dev, "need 2 ressources\n");
 		return -ENODEV;
+	}
 
 	rtc = kzalloc(sizeof *rtc, GFP_KERNEL);
 	if (!rtc)
@@ -314,6 +318,13 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
 		goto fail;
 	}
 
+	rtc->gpbr = ioremap(r_gpbr->start, resource_size(r_gpbr));
+	if (!rtc->gpbr) {
+		dev_err(&pdev->dev, "failed to map gpbr registers, aborting.\n");
+		ret = -ENOMEM;
+		goto fail_gpbr;
+	}
+
 	mr = rtt_readl(rtc, MR);
 
 	/* unless RTT is counting at 1 Hz, re-initialize it */
@@ -340,7 +351,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
 	if (ret) {
 		dev_dbg(&pdev->dev, "can't share IRQ %d?\n", AT91_ID_SYS);
 		rtc_device_unregister(rtc->rtcdev);
-		goto fail;
+		goto fail_register;
 	}
 
 	/* NOTE:  sam9260 rev A silicon has a ROM bug which resets the
@@ -356,6 +367,8 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
 	return 0;
 
 fail_register:
+	iounmap(rtc->gpbr);
+fail_gpbr:
 	iounmap(rtc->rtt);
 fail:
 	platform_set_drvdata(pdev, NULL);
@@ -366,7 +379,7 @@ fail:
 /*
  * Disable and remove the RTC driver
  */
-static int __exit at91_rtc_remove(struct platform_device *pdev)
+static int __devexit at91_rtc_remove(struct platform_device *pdev)
 {
 	struct sam9_rtc	*rtc = platform_get_drvdata(pdev);
 	u32		mr = rtt_readl(rtc, MR);
@@ -377,6 +390,7 @@ static int __exit at91_rtc_remove(struct platform_device *pdev)
 
 	rtc_device_unregister(rtc->rtcdev);
 
+	iounmap(rtc->gpbr);
 	iounmap(rtc->rtt);
 	platform_set_drvdata(pdev, NULL);
 	kfree(rtc);
@@ -440,63 +454,20 @@ static int at91_rtc_resume(struct platform_device *pdev)
 #endif
 
 static struct platform_driver at91_rtc_driver = {
-	.driver.name	= "rtc-at91sam9",
-	.driver.owner	= THIS_MODULE,
-	.remove		= __exit_p(at91_rtc_remove),
+	.probe		= at91_rtc_probe,
+	.remove		= __devexit_p(at91_rtc_remove),
 	.shutdown	= at91_rtc_shutdown,
 	.suspend	= at91_rtc_suspend,
 	.resume		= at91_rtc_resume,
+	.driver		= {
+		.name	= "rtc-at91sam9",
+		.owner	= THIS_MODULE,
+	},
 };
 
-/* Chips can have more than one RTT module, and they can be used for more
- * than just RTCs.  So we can't just register as "the" RTT driver.
- *
- * A normal approach in such cases is to create a library to allocate and
- * free the modules.  Here we just use bus_find_device() as like such a
- * library, binding directly ... no runtime "library" footprint is needed.
- */
-static int __init at91_rtc_match(struct device *dev, void *v)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	int ret;
-
-	/* continue searching if this isn't the RTT we need */
-	if (strcmp("at91_rtt", pdev->name) != 0
-			|| pdev->id != CONFIG_RTC_DRV_AT91SAM9_RTT)
-		goto fail;
-
-	/* else we found it ... but fail unless we can bind to the RTC driver */
-	if (dev->driver) {
-		dev_dbg(dev, "busy, can't use as RTC!\n");
-		goto fail;
-	}
-	dev->driver = &at91_rtc_driver.driver;
-	if (device_attach(dev) == 0) {
-		dev_dbg(dev, "can't attach RTC!\n");
-		goto fail;
-	}
-	ret = at91_rtc_probe(pdev);
-	if (ret == 0)
-		return true;
-
-	dev_dbg(dev, "RTC probe err %d!\n", ret);
-fail:
-	return false;
-}
-
 static int __init at91_rtc_init(void)
 {
-	int status;
-	struct device *rtc;
-
-	status = platform_driver_register(&at91_rtc_driver);
-	if (status)
-		return status;
-	rtc = bus_find_device(&platform_bus_type, NULL,
-			NULL, at91_rtc_match);
-	if (!rtc)
-		platform_driver_unregister(&at91_rtc_driver);
-	return rtc ? 0 : -ENODEV;
+	return platform_driver_register(&at91_rtc_driver);
 }
 module_init(at91_rtc_init);
 
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 10605ecc99a..f9a6be7a9be 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1526,6 +1526,8 @@ void __init atmel_register_uart_fns(struct atmel_port_fns *fns)
 	atmel_pops.set_wake	= fns->set_wake;
 }
 
+struct platform_device *atmel_default_console_device;	/* the serial console device */
+
 #ifdef CONFIG_SERIAL_ATMEL_CONSOLE
 static void atmel_console_putchar(struct uart_port *port, int ch)
 {
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
index e2fd3d8e0ab..5847a4b855f 100644
--- a/drivers/tty/serial/pxa.c
+++ b/drivers/tty/serial/pxa.c
@@ -36,6 +36,7 @@
 #include <linux/circ_buf.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
@@ -44,6 +45,8 @@
 #include <linux/io.h>
 #include <linux/slab.h>
 
+#define PXA_NAME_LEN		8
+
 struct uart_pxa_port {
 	struct uart_port        port;
 	unsigned char           ier;
@@ -51,7 +54,7 @@ struct uart_pxa_port {
 	unsigned char           mcr;
 	unsigned int            lsr_break_flag;
 	struct clk		*clk;
-	char			*name;
+	char			name[PXA_NAME_LEN];
 };
 
 static inline unsigned int serial_in(struct uart_pxa_port *up, int offset)
@@ -781,6 +784,31 @@ static const struct dev_pm_ops serial_pxa_pm_ops = {
 };
 #endif
 
+static struct of_device_id serial_pxa_dt_ids[] = {
+	{ .compatible = "mrvl,pxa-uart", },
+	{ .compatible = "mrvl,mmp-uart", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, serial_pxa_dt_ids);
+
+static int serial_pxa_probe_dt(struct platform_device *pdev,
+			       struct uart_pxa_port *sport)
+{
+	struct device_node *np = pdev->dev.of_node;
+	int ret;
+
+	if (!np)
+		return 1;
+
+	ret = of_alias_get_id(np, "serial");
+	if (ret < 0) {
+		dev_err(&pdev->dev, "failed to get alias id, errno %d\n", ret);
+		return ret;
+	}
+	sport->port.line = ret;
+	return 0;
+}
+
 static int serial_pxa_probe(struct platform_device *dev)
 {
 	struct uart_pxa_port *sport;
@@ -808,20 +836,16 @@ static int serial_pxa_probe(struct platform_device *dev)
 	sport->port.irq = irqres->start;
 	sport->port.fifosize = 64;
 	sport->port.ops = &serial_pxa_pops;
-	sport->port.line = dev->id;
 	sport->port.dev = &dev->dev;
 	sport->port.flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF;
 	sport->port.uartclk = clk_get_rate(sport->clk);
 
-	switch (dev->id) {
-	case 0: sport->name = "FFUART"; break;
-	case 1: sport->name = "BTUART"; break;
-	case 2: sport->name = "STUART"; break;
-	case 3: sport->name = "HWUART"; break;
-	default:
-		sport->name = "???";
-		break;
-	}
+	ret = serial_pxa_probe_dt(dev, sport);
+	if (ret > 0)
+		sport->port.line = dev->id;
+	else if (ret < 0)
+		goto err_clk;
+	snprintf(sport->name, PXA_NAME_LEN - 1, "UART%d", sport->port.line + 1);
 
 	sport->port.membase = ioremap(mmres->start, resource_size(mmres));
 	if (!sport->port.membase) {
@@ -829,7 +853,7 @@ static int serial_pxa_probe(struct platform_device *dev)
 		goto err_clk;
 	}
 
-	serial_pxa_ports[dev->id] = sport;
+	serial_pxa_ports[sport->port.line] = sport;
 
 	uart_add_one_port(&serial_pxa_reg, &sport->port);
 	platform_set_drvdata(dev, sport);
@@ -866,6 +890,7 @@ static struct platform_driver serial_pxa_driver = {
 #ifdef CONFIG_PM
 		.pm	= &serial_pxa_pm_ops,
 #endif
+		.of_match_table = serial_pxa_dt_ids,
 	},
 };
 
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index 15a8cdb2ded..2db5f68f796 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -40,6 +40,7 @@
 #include <mach/board.h>
 #include <mach/cpu.h>
 #include <mach/at91sam9261_matrix.h>
+#include <mach/at91_matrix.h>
 
 #include "at91_udc.h"
 
@@ -910,9 +911,9 @@ static void pullup(struct at91_udc *udc, int is_on)
 		} else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) {
 			u32	usbpucr;
 
-			usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR);
+			usbpucr = at91_matrix_read(AT91_MATRIX_USBPUCR);
 			usbpucr |= AT91_MATRIX_USBPUCR_PUON;
-			at91_sys_write(AT91_MATRIX_USBPUCR, usbpucr);
+			at91_matrix_write(AT91_MATRIX_USBPUCR, usbpucr);
 		}
 	} else {
 		stop_activity(udc);
@@ -928,9 +929,9 @@ static void pullup(struct at91_udc *udc, int is_on)
 		} else if (cpu_is_at91sam9261() || cpu_is_at91sam9g10()) {
 			u32	usbpucr;
 
-			usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR);
+			usbpucr = at91_matrix_read(AT91_MATRIX_USBPUCR);
 			usbpucr &= ~AT91_MATRIX_USBPUCR_PUON;
-			at91_sys_write(AT91_MATRIX_USBPUCR, usbpucr);
+			at91_matrix_write(AT91_MATRIX_USBPUCR, usbpucr);
 		}
 		clk_off(udc);
 	}
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index 5e10f651ad6..9f98508966d 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -332,12 +332,12 @@ static int vbus_is_present(struct usba_udc *udc)
 
 static void toggle_bias(int is_on)
 {
-	unsigned int uckr = at91_sys_read(AT91_CKGR_UCKR);
+	unsigned int uckr = at91_pmc_read(AT91_CKGR_UCKR);
 
 	if (is_on)
-		at91_sys_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN);
+		at91_pmc_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN);
 	else
-		at91_sys_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN));
+		at91_pmc_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN));
 }
 
 #else
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 77afabc77f9..8e855eb0bf8 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -448,10 +448,11 @@ static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data)
 
 	/* From the GPIO notifying the over-current situation, find
 	 * out the corresponding port */
-	gpio = irq_to_gpio(irq);
 	for (port = 0; port < ARRAY_SIZE(pdata->overcurrent_pin); port++) {
-		if (pdata->overcurrent_pin[port] == gpio)
+		if (gpio_to_irq(pdata->overcurrent_pin[port]) == irq) {
+			gpio = pdata->overcurrent_pin[port];
 			break;
+		}
 	}
 
 	if (port == ARRAY_SIZE(pdata->overcurrent_pin)) {
diff --git a/drivers/watchdog/at91rm9200_wdt.c b/drivers/watchdog/at91rm9200_wdt.c
index b3046dc4b56..7ceefd29ae1 100644
--- a/drivers/watchdog/at91rm9200_wdt.c
+++ b/drivers/watchdog/at91rm9200_wdt.c
@@ -51,7 +51,7 @@ static unsigned long at91wdt_busy;
  */
 static inline void at91_wdt_stop(void)
 {
-	at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN);
+	at91_st_write(AT91_ST_WDMR, AT91_ST_EXTEN);
 }
 
 /*
@@ -59,9 +59,9 @@ static inline void at91_wdt_stop(void)
  */
 static inline void at91_wdt_start(void)
 {
-	at91_sys_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN |
+	at91_st_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN |
 				(((65536 * wdt_time) >> 8) & AT91_ST_WDV));
-	at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
+	at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
 }
 
 /*
@@ -69,7 +69,7 @@ static inline void at91_wdt_start(void)
  */
 static inline void at91_wdt_reload(void)
 {
-	at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
+	at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
 }
 
 /* ......................................................................... */