diff mbox

[5/8] ARM: plat-nomadik: move MTU, kill plat-nomadik

Message ID 1350580748-8481-1-git-send-email-linus.walleij@stericsson.com (mailing list archive)
State New, archived
Headers show

Commit Message

Linus Walleij Oct. 18, 2012, 5:19 p.m. UTC
From: Linus Walleij <linus.walleij@linaro.org>

This moves the MTU timer driver from arch/arm/plat-nomadik
to drivers/clocksource and moves the header file to the
platform_data directory.

As this moves the last file being compiled to an object out
of arch/arm/plat-nomadik, we have to "turn off the light"
and delete the plat-nomadik directory, because it is not
allowed to have an empty Makefile in a plat-* directory.
This is probably also a desired side effect of depopulating
the arch/arm directory of drivers. Luckily we have just
deleted all the <plat/*> include files prior to this so
by moving the last one we may delete the directory.

After this all the Ux500 and Nomadik device drivers live
outside of the arch/arm hierarchy.

Cc: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 arch/arm/Kconfig                                   |   1 -
 arch/arm/Makefile                                  |   1 -
 arch/arm/mach-nomadik/Kconfig                      |   2 +-
 arch/arm/mach-nomadik/board-nhk8815.c              |   6 +-
 arch/arm/mach-ux500/Kconfig                        |   2 +-
 arch/arm/mach-ux500/timer.c                        |   3 +-
 arch/arm/plat-nomadik/Kconfig                      |  29 ---
 arch/arm/plat-nomadik/Makefile                     |   5 -
 arch/arm/plat-nomadik/include/plat/mtu.h           |   9 -
 arch/arm/plat-nomadik/timer.c                      | 224 ---------------------
 drivers/char/hw_random/Kconfig                     |   2 +-
 drivers/clocksource/Kconfig                        |  17 +-
 drivers/clocksource/Makefile                       |   1 +
 drivers/clocksource/nomadik-mtu.c                  | 224 +++++++++++++++++++++
 drivers/input/keyboard/Kconfig                     |   2 +-
 drivers/mtd/nand/Kconfig                           |   2 +-
 .../linux/platform_data/clocksource-nomadik-mtu.h  |   9 +
 17 files changed, 258 insertions(+), 281 deletions(-)
 delete mode 100644 arch/arm/plat-nomadik/Kconfig
 delete mode 100644 arch/arm/plat-nomadik/Makefile
 delete mode 100644 arch/arm/plat-nomadik/include/plat/mtu.h
 delete mode 100644 arch/arm/plat-nomadik/timer.c
 create mode 100644 drivers/clocksource/nomadik-mtu.c
 create mode 100644 include/linux/platform_data/clocksource-nomadik-mtu.h
diff mbox

Patch

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 73067ef..c5f2c18 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1065,7 +1065,6 @@  source "arch/arm/mach-mxs/Kconfig"
 source "arch/arm/mach-netx/Kconfig"
 
 source "arch/arm/mach-nomadik/Kconfig"
-source "arch/arm/plat-nomadik/Kconfig"
 
 source "arch/arm/plat-omap/Kconfig"
 
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index f023e3a..ed6a304 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -200,7 +200,6 @@  plat-$(CONFIG_ARCH_OMAP)	+= omap
 plat-$(CONFIG_ARCH_S3C64XX)	+= samsung
 plat-$(CONFIG_ARCH_ZYNQ)	+= versatile
 plat-$(CONFIG_PLAT_IOP)		+= iop
-plat-$(CONFIG_PLAT_NOMADIK)	+= nomadik
 plat-$(CONFIG_PLAT_ORION)	+= orion
 plat-$(CONFIG_PLAT_PXA)		+= pxa
 plat-$(CONFIG_PLAT_S3C24XX)	+= s3c24xx samsung
diff --git a/arch/arm/mach-nomadik/Kconfig b/arch/arm/mach-nomadik/Kconfig
index c744946..706dc57 100644
--- a/arch/arm/mach-nomadik/Kconfig
+++ b/arch/arm/mach-nomadik/Kconfig
@@ -4,7 +4,7 @@  menu "Nomadik boards"
 
 config MACH_NOMADIK_8815NHK
 	bool "ST 8815 Nomadik Hardware Kit (evaluation board)"
-	select HAS_MTU
+	select CLKSRC_NOMADIK_MTU
 	select NOMADIK_8815
 
 endmenu
diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c
index 16f10e0..5ccdf53 100644
--- a/arch/arm/mach-nomadik/board-nhk8815.c
+++ b/arch/arm/mach-nomadik/board-nhk8815.c
@@ -25,16 +25,14 @@ 
 #include <linux/io.h>
 #include <linux/pinctrl/machine.h>
 #include <linux/platform_data/pinctrl-nomadik.h>
+#include <linux/platform_data/clocksource-nomadik-mtu.h>
+#include <linux/platform_data/mtd-nomadik-nand.h>
 #include <asm/hardware/vic.h>
 #include <asm/sizes.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 #include <asm/mach/time.h>
-
-#include <plat/mtu.h>
-
-#include <linux/platform_data/mtd-nomadik-nand.h>
 #include <mach/fsmc.h>
 #include <mach/irqs.h>
 
diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig
index e8c3f0d..5dea906 100644
--- a/arch/arm/mach-ux500/Kconfig
+++ b/arch/arm/mach-ux500/Kconfig
@@ -7,8 +7,8 @@  config UX500_SOC_COMMON
 	select ARM_ERRATA_764369 if SMP
 	select ARM_GIC
 	select CACHE_L2X0
+	select CLKSRC_NOMADIK_MTU
 	select COMMON_CLK
-	select HAS_MTU
 	select PINCTRL
 	select PINCTRL_NOMADIK
 	select PL310_ERRATA_753970 if CACHE_PL310
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index 20d02fa..875309a 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/arch/arm/mach-ux500/timer.c
@@ -9,11 +9,10 @@ 
 #include <linux/clksrc-dbx500-prcmu.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/platform_data/clocksource-nomadik-mtu.h>
 
 #include <asm/smp_twd.h>
 
-#include <plat/mtu.h>
-
 #include <mach/setup.h>
 #include <mach/hardware.h>
 #include <mach/irqs.h>
diff --git a/arch/arm/plat-nomadik/Kconfig b/arch/arm/plat-nomadik/Kconfig
deleted file mode 100644
index 19f55ca..0000000
--- a/arch/arm/plat-nomadik/Kconfig
+++ /dev/null
@@ -1,29 +0,0 @@ 
-# We keep common IP's here for Nomadik and other similar
-# familiy of processors from ST-Ericsson. At the moment we have
-# just MTU, others to follow soon.
-
-config PLAT_NOMADIK
-	bool
-	depends on ARCH_NOMADIK || ARCH_U8500
-	default y
-	select CLKSRC_MMIO
-	help
-	  Common platform code for Nomadik and other ST-Ericsson
-	  platforms.
-
-if PLAT_NOMADIK
-
-config HAS_MTU
-	bool
-	help
-	  Support for Multi Timer Unit. MTU provides access
-	  to multiple interrupt generating programmable
-	  32-bit free running decrementing counters.
-
-config NOMADIK_MTU_SCHED_CLOCK
-	bool
-	depends on HAS_MTU
-	help
-	  Use the Multi Timer Unit as the sched_clock.
-
-endif
diff --git a/arch/arm/plat-nomadik/Makefile b/arch/arm/plat-nomadik/Makefile
deleted file mode 100644
index 37c7cdd..0000000
--- a/arch/arm/plat-nomadik/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@ 
-# arch/arm/plat-nomadik/Makefile
-# Copyright 2009 ST-Ericsson
-# Licensed under GPLv2
-
-obj-$(CONFIG_HAS_MTU)	+= timer.o
diff --git a/arch/arm/plat-nomadik/include/plat/mtu.h b/arch/arm/plat-nomadik/include/plat/mtu.h
deleted file mode 100644
index 8008897..0000000
--- a/arch/arm/plat-nomadik/include/plat/mtu.h
+++ /dev/null
@@ -1,9 +0,0 @@ 
-#ifndef __PLAT_MTU_H
-#define __PLAT_MTU_H
-
-void nmdk_timer_init(void __iomem *base, int irq);
-void nmdk_clkevt_reset(void);
-void nmdk_clksrc_reset(void);
-
-#endif /* __PLAT_MTU_H */
-
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c
deleted file mode 100644
index f911430..0000000
--- a/arch/arm/plat-nomadik/timer.c
+++ /dev/null
@@ -1,224 +0,0 @@ 
-/*
- *  linux/arch/arm/plat-nomadik/timer.c
- *
- * Copyright (C) 2008 STMicroelectronics
- * Copyright (C) 2010 Alessandro Rubini
- * Copyright (C) 2010 Linus Walleij for ST-Ericsson
- *
- * 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/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/clockchips.h>
-#include <linux/clk.h>
-#include <linux/jiffies.h>
-#include <linux/err.h>
-#include <asm/mach/time.h>
-#include <asm/sched_clock.h>
-
-/*
- * The MTU device hosts four different counters, with 4 set of
- * registers. These are register names.
- */
-
-#define MTU_IMSC	0x00	/* Interrupt mask set/clear */
-#define MTU_RIS		0x04	/* Raw interrupt status */
-#define MTU_MIS		0x08	/* Masked interrupt status */
-#define MTU_ICR		0x0C	/* Interrupt clear register */
-
-/* per-timer registers take 0..3 as argument */
-#define MTU_LR(x)	(0x10 + 0x10 * (x) + 0x00)	/* Load value */
-#define MTU_VAL(x)	(0x10 + 0x10 * (x) + 0x04)	/* Current value */
-#define MTU_CR(x)	(0x10 + 0x10 * (x) + 0x08)	/* Control reg */
-#define MTU_BGLR(x)	(0x10 + 0x10 * (x) + 0x0c)	/* At next overflow */
-
-/* bits for the control register */
-#define MTU_CRn_ENA		0x80
-#define MTU_CRn_PERIODIC	0x40	/* if 0 = free-running */
-#define MTU_CRn_PRESCALE_MASK	0x0c
-#define MTU_CRn_PRESCALE_1		0x00
-#define MTU_CRn_PRESCALE_16		0x04
-#define MTU_CRn_PRESCALE_256		0x08
-#define MTU_CRn_32BITS		0x02
-#define MTU_CRn_ONESHOT		0x01	/* if 0 = wraps reloading from BGLR*/
-
-/* Other registers are usual amba/primecell registers, currently not used */
-#define MTU_ITCR	0xff0
-#define MTU_ITOP	0xff4
-
-#define MTU_PERIPH_ID0	0xfe0
-#define MTU_PERIPH_ID1	0xfe4
-#define MTU_PERIPH_ID2	0xfe8
-#define MTU_PERIPH_ID3	0xfeC
-
-#define MTU_PCELL0	0xff0
-#define MTU_PCELL1	0xff4
-#define MTU_PCELL2	0xff8
-#define MTU_PCELL3	0xffC
-
-static void __iomem *mtu_base;
-static bool clkevt_periodic;
-static u32 clk_prescale;
-static u32 nmdk_cycle;		/* write-once */
-
-#ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK
-/*
- * Override the global weak sched_clock symbol with this
- * local implementation which uses the clocksource to get some
- * better resolution when scheduling the kernel.
- */
-static u32 notrace nomadik_read_sched_clock(void)
-{
-	if (unlikely(!mtu_base))
-		return 0;
-
-	return -readl(mtu_base + MTU_VAL(0));
-}
-#endif
-
-/* Clockevent device: use one-shot mode */
-static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev)
-{
-	writel(1 << 1, mtu_base + MTU_IMSC);
-	writel(evt, mtu_base + MTU_LR(1));
-	/* Load highest value, enable device, enable interrupts */
-	writel(MTU_CRn_ONESHOT | clk_prescale |
-	       MTU_CRn_32BITS | MTU_CRn_ENA,
-	       mtu_base + MTU_CR(1));
-
-	return 0;
-}
-
-void nmdk_clkevt_reset(void)
-{
-	if (clkevt_periodic) {
-		/* Timer: configure load and background-load, and fire it up */
-		writel(nmdk_cycle, mtu_base + MTU_LR(1));
-		writel(nmdk_cycle, mtu_base + MTU_BGLR(1));
-
-		writel(MTU_CRn_PERIODIC | clk_prescale |
-		       MTU_CRn_32BITS | MTU_CRn_ENA,
-		       mtu_base + MTU_CR(1));
-		writel(1 << 1, mtu_base + MTU_IMSC);
-	} else {
-		/* Generate an interrupt to start the clockevent again */
-		(void) nmdk_clkevt_next(nmdk_cycle, NULL);
-	}
-}
-
-static void nmdk_clkevt_mode(enum clock_event_mode mode,
-			     struct clock_event_device *dev)
-{
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		clkevt_periodic = true;
-		nmdk_clkevt_reset();
-		break;
-	case CLOCK_EVT_MODE_ONESHOT:
-		clkevt_periodic = false;
-		break;
-	case CLOCK_EVT_MODE_SHUTDOWN:
-	case CLOCK_EVT_MODE_UNUSED:
-		writel(0, mtu_base + MTU_IMSC);
-		/* disable timer */
-		writel(0, mtu_base + MTU_CR(1));
-		/* load some high default value */
-		writel(0xffffffff, mtu_base + MTU_LR(1));
-		break;
-	case CLOCK_EVT_MODE_RESUME:
-		break;
-	}
-}
-
-static struct clock_event_device nmdk_clkevt = {
-	.name		= "mtu_1",
-	.features	= CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
-	.rating		= 200,
-	.set_mode	= nmdk_clkevt_mode,
-	.set_next_event	= nmdk_clkevt_next,
-};
-
-/*
- * IRQ Handler for timer 1 of the MTU block.
- */
-static irqreturn_t nmdk_timer_interrupt(int irq, void *dev_id)
-{
-	struct clock_event_device *evdev = dev_id;
-
-	writel(1 << 1, mtu_base + MTU_ICR); /* Interrupt clear reg */
-	evdev->event_handler(evdev);
-	return IRQ_HANDLED;
-}
-
-static struct irqaction nmdk_timer_irq = {
-	.name		= "Nomadik Timer Tick",
-	.flags		= IRQF_DISABLED | IRQF_TIMER,
-	.handler	= nmdk_timer_interrupt,
-	.dev_id		= &nmdk_clkevt,
-};
-
-void nmdk_clksrc_reset(void)
-{
-	/* Disable */
-	writel(0, mtu_base + MTU_CR(0));
-
-	/* ClockSource: configure load and background-load, and fire it up */
-	writel(nmdk_cycle, mtu_base + MTU_LR(0));
-	writel(nmdk_cycle, mtu_base + MTU_BGLR(0));
-
-	writel(clk_prescale | MTU_CRn_32BITS | MTU_CRn_ENA,
-	       mtu_base + MTU_CR(0));
-}
-
-void __init nmdk_timer_init(void __iomem *base, int irq)
-{
-	unsigned long rate;
-	struct clk *clk0;
-
-	mtu_base = base;
-	clk0 = clk_get_sys("mtu0", NULL);
-	BUG_ON(IS_ERR(clk0));
-	BUG_ON(clk_prepare(clk0) < 0);
-	BUG_ON(clk_enable(clk0) < 0);
-
-	/*
-	 * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz
-	 * for ux500.
-	 * Use a divide-by-16 counter if the tick rate is more than 32MHz.
-	 * At 32 MHz, the timer (with 32 bit counter) can be programmed
-	 * to wake-up at a max 127s a head in time. Dividing a 2.4 MHz timer
-	 * with 16 gives too low timer resolution.
-	 */
-	rate = clk_get_rate(clk0);
-	if (rate > 32000000) {
-		rate /= 16;
-		clk_prescale = MTU_CRn_PRESCALE_16;
-	} else {
-		clk_prescale = MTU_CRn_PRESCALE_1;
-	}
-
-	/* Cycles for periodic mode */
-	nmdk_cycle = DIV_ROUND_CLOSEST(rate, HZ);
-
-
-	/* Timer 0 is the free running clocksource */
-	nmdk_clksrc_reset();
-
-	if (clocksource_mmio_init(mtu_base + MTU_VAL(0), "mtu_0",
-			rate, 200, 32, clocksource_mmio_readl_down))
-		pr_err("timer: failed to initialize clock source %s\n",
-		       "mtu_0");
-
-#ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK
-	setup_sched_clock(nomadik_read_sched_clock, 32, rate);
-#endif
-
-	/* Timer 1 is used for events, register irq and clockevents */
-	setup_irq(irq, &nmdk_timer_irq);
-	nmdk_clkevt.cpumask = cpumask_of(0);
-	clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU);
-}
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index fbd9b2b..5bc09ee 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -216,7 +216,7 @@  config HW_RANDOM_MXC_RNGA
 
 config HW_RANDOM_NOMADIK
 	tristate "ST-Ericsson Nomadik Random Number Generator support"
-	depends on HW_RANDOM && PLAT_NOMADIK
+	depends on HW_RANDOM && ARCH_NOMADIK
 	---help---
 	  This driver provides kernel-side support for the Random Number
 	  Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 6a78073..c9f67de 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -22,6 +22,21 @@  config DW_APB_TIMER_OF
 config ARMADA_370_XP_TIMER
 	bool
 
+config CLKSRC_NOMADIK_MTU
+	bool
+	depends on (ARCH_NOMADIK || ARCH_U8500)
+	select CLKSRC_MMIO
+	help
+	  Support for Multi Timer Unit. MTU provides access
+	  to multiple interrupt generating programmable
+	  32-bit free running decrementing counters.
+
+config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
+	bool
+	depends on CLKSRC_NOMADIK_MTU
+	help
+	  Use the Multi Timer Unit as the sched_clock.
+
 config CLKSRC_DBX500_PRCMU
 	bool "Clocksource PRCMU Timer"
 	depends on UX500_SOC_DB8500
@@ -31,7 +46,7 @@  config CLKSRC_DBX500_PRCMU
 
 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
 	bool "Clocksource PRCMU Timer sched_clock"
-	depends on (CLKSRC_DBX500_PRCMU && !NOMADIK_MTU_SCHED_CLOCK)
+	depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
 	default y
 	help
 	  Use the always on PRCMU Timer as sched_clock
diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile
index 603be36..24fb888 100644
--- a/drivers/clocksource/Makefile
+++ b/drivers/clocksource/Makefile
@@ -11,6 +11,7 @@  obj-$(CONFIG_CLKBLD_I8253)	+= i8253.o
 obj-$(CONFIG_CLKSRC_MMIO)	+= mmio.o
 obj-$(CONFIG_DW_APB_TIMER)	+= dw_apb_timer.o
 obj-$(CONFIG_DW_APB_TIMER_OF)	+= dw_apb_timer_of.o
+obj-$(CONFIG_CLKSRC_NOMADIK_MTU)	+= nomadik-mtu.o
 obj-$(CONFIG_CLKSRC_DBX500_PRCMU)	+= clksrc-dbx500-prcmu.o
 obj-$(CONFIG_ARMADA_370_XP_TIMER)	+= time-armada-370-xp.o
 obj-$(CONFIG_ARCH_BCM2835)	+= bcm2835_timer.o
diff --git a/drivers/clocksource/nomadik-mtu.c b/drivers/clocksource/nomadik-mtu.c
new file mode 100644
index 0000000..23c780b
--- /dev/null
+++ b/drivers/clocksource/nomadik-mtu.c
@@ -0,0 +1,224 @@ 
+/*
+ * Copyright (C) 2008 STMicroelectronics
+ * Copyright (C) 2010 Alessandro Rubini
+ * Copyright (C) 2010 Linus Walleij for ST-Ericsson
+ *
+ * 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/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/clockchips.h>
+#include <linux/clocksource.h>
+#include <linux/clk.h>
+#include <linux/jiffies.h>
+#include <linux/err.h>
+#include <linux/platform_data/clocksource-nomadik-mtu.h>
+#include <asm/mach/time.h>
+#include <asm/sched_clock.h>
+
+/*
+ * The MTU device hosts four different counters, with 4 set of
+ * registers. These are register names.
+ */
+
+#define MTU_IMSC	0x00	/* Interrupt mask set/clear */
+#define MTU_RIS		0x04	/* Raw interrupt status */
+#define MTU_MIS		0x08	/* Masked interrupt status */
+#define MTU_ICR		0x0C	/* Interrupt clear register */
+
+/* per-timer registers take 0..3 as argument */
+#define MTU_LR(x)	(0x10 + 0x10 * (x) + 0x00)	/* Load value */
+#define MTU_VAL(x)	(0x10 + 0x10 * (x) + 0x04)	/* Current value */
+#define MTU_CR(x)	(0x10 + 0x10 * (x) + 0x08)	/* Control reg */
+#define MTU_BGLR(x)	(0x10 + 0x10 * (x) + 0x0c)	/* At next overflow */
+
+/* bits for the control register */
+#define MTU_CRn_ENA		0x80
+#define MTU_CRn_PERIODIC	0x40	/* if 0 = free-running */
+#define MTU_CRn_PRESCALE_MASK	0x0c
+#define MTU_CRn_PRESCALE_1		0x00
+#define MTU_CRn_PRESCALE_16		0x04
+#define MTU_CRn_PRESCALE_256		0x08
+#define MTU_CRn_32BITS		0x02
+#define MTU_CRn_ONESHOT		0x01	/* if 0 = wraps reloading from BGLR*/
+
+/* Other registers are usual amba/primecell registers, currently not used */
+#define MTU_ITCR	0xff0
+#define MTU_ITOP	0xff4
+
+#define MTU_PERIPH_ID0	0xfe0
+#define MTU_PERIPH_ID1	0xfe4
+#define MTU_PERIPH_ID2	0xfe8
+#define MTU_PERIPH_ID3	0xfeC
+
+#define MTU_PCELL0	0xff0
+#define MTU_PCELL1	0xff4
+#define MTU_PCELL2	0xff8
+#define MTU_PCELL3	0xffC
+
+static void __iomem *mtu_base;
+static bool clkevt_periodic;
+static u32 clk_prescale;
+static u32 nmdk_cycle;		/* write-once */
+
+#ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK
+/*
+ * Override the global weak sched_clock symbol with this
+ * local implementation which uses the clocksource to get some
+ * better resolution when scheduling the kernel.
+ */
+static u32 notrace nomadik_read_sched_clock(void)
+{
+	if (unlikely(!mtu_base))
+		return 0;
+
+	return -readl(mtu_base + MTU_VAL(0));
+}
+#endif
+
+/* Clockevent device: use one-shot mode */
+static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev)
+{
+	writel(1 << 1, mtu_base + MTU_IMSC);
+	writel(evt, mtu_base + MTU_LR(1));
+	/* Load highest value, enable device, enable interrupts */
+	writel(MTU_CRn_ONESHOT | clk_prescale |
+	       MTU_CRn_32BITS | MTU_CRn_ENA,
+	       mtu_base + MTU_CR(1));
+
+	return 0;
+}
+
+void nmdk_clkevt_reset(void)
+{
+	if (clkevt_periodic) {
+		/* Timer: configure load and background-load, and fire it up */
+		writel(nmdk_cycle, mtu_base + MTU_LR(1));
+		writel(nmdk_cycle, mtu_base + MTU_BGLR(1));
+
+		writel(MTU_CRn_PERIODIC | clk_prescale |
+		       MTU_CRn_32BITS | MTU_CRn_ENA,
+		       mtu_base + MTU_CR(1));
+		writel(1 << 1, mtu_base + MTU_IMSC);
+	} else {
+		/* Generate an interrupt to start the clockevent again */
+		(void) nmdk_clkevt_next(nmdk_cycle, NULL);
+	}
+}
+
+static void nmdk_clkevt_mode(enum clock_event_mode mode,
+			     struct clock_event_device *dev)
+{
+	switch (mode) {
+	case CLOCK_EVT_MODE_PERIODIC:
+		clkevt_periodic = true;
+		nmdk_clkevt_reset();
+		break;
+	case CLOCK_EVT_MODE_ONESHOT:
+		clkevt_periodic = false;
+		break;
+	case CLOCK_EVT_MODE_SHUTDOWN:
+	case CLOCK_EVT_MODE_UNUSED:
+		writel(0, mtu_base + MTU_IMSC);
+		/* disable timer */
+		writel(0, mtu_base + MTU_CR(1));
+		/* load some high default value */
+		writel(0xffffffff, mtu_base + MTU_LR(1));
+		break;
+	case CLOCK_EVT_MODE_RESUME:
+		break;
+	}
+}
+
+static struct clock_event_device nmdk_clkevt = {
+	.name		= "mtu_1",
+	.features	= CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC,
+	.rating		= 200,
+	.set_mode	= nmdk_clkevt_mode,
+	.set_next_event	= nmdk_clkevt_next,
+};
+
+/*
+ * IRQ Handler for timer 1 of the MTU block.
+ */
+static irqreturn_t nmdk_timer_interrupt(int irq, void *dev_id)
+{
+	struct clock_event_device *evdev = dev_id;
+
+	writel(1 << 1, mtu_base + MTU_ICR); /* Interrupt clear reg */
+	evdev->event_handler(evdev);
+	return IRQ_HANDLED;
+}
+
+static struct irqaction nmdk_timer_irq = {
+	.name		= "Nomadik Timer Tick",
+	.flags		= IRQF_DISABLED | IRQF_TIMER,
+	.handler	= nmdk_timer_interrupt,
+	.dev_id		= &nmdk_clkevt,
+};
+
+void nmdk_clksrc_reset(void)
+{
+	/* Disable */
+	writel(0, mtu_base + MTU_CR(0));
+
+	/* ClockSource: configure load and background-load, and fire it up */
+	writel(nmdk_cycle, mtu_base + MTU_LR(0));
+	writel(nmdk_cycle, mtu_base + MTU_BGLR(0));
+
+	writel(clk_prescale | MTU_CRn_32BITS | MTU_CRn_ENA,
+	       mtu_base + MTU_CR(0));
+}
+
+void __init nmdk_timer_init(void __iomem *base, int irq)
+{
+	unsigned long rate;
+	struct clk *clk0;
+
+	mtu_base = base;
+	clk0 = clk_get_sys("mtu0", NULL);
+	BUG_ON(IS_ERR(clk0));
+	BUG_ON(clk_prepare(clk0) < 0);
+	BUG_ON(clk_enable(clk0) < 0);
+
+	/*
+	 * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz
+	 * for ux500.
+	 * Use a divide-by-16 counter if the tick rate is more than 32MHz.
+	 * At 32 MHz, the timer (with 32 bit counter) can be programmed
+	 * to wake-up at a max 127s a head in time. Dividing a 2.4 MHz timer
+	 * with 16 gives too low timer resolution.
+	 */
+	rate = clk_get_rate(clk0);
+	if (rate > 32000000) {
+		rate /= 16;
+		clk_prescale = MTU_CRn_PRESCALE_16;
+	} else {
+		clk_prescale = MTU_CRn_PRESCALE_1;
+	}
+
+	/* Cycles for periodic mode */
+	nmdk_cycle = DIV_ROUND_CLOSEST(rate, HZ);
+
+
+	/* Timer 0 is the free running clocksource */
+	nmdk_clksrc_reset();
+
+	if (clocksource_mmio_init(mtu_base + MTU_VAL(0), "mtu_0",
+			rate, 200, 32, clocksource_mmio_readl_down))
+		pr_err("timer: failed to initialize clock source %s\n",
+		       "mtu_0");
+
+#ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK
+	setup_sched_clock(nomadik_read_sched_clock, 32, rate);
+#endif
+
+	/* Timer 1 is used for events, register irq and clockevents */
+	setup_irq(irq, &nmdk_timer_irq);
+	nmdk_clkevt.cpumask = cpumask_of(0);
+	clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU);
+}
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index b4b65af..855fc52 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -408,7 +408,7 @@  config KEYBOARD_NEWTON
 
 config KEYBOARD_NOMADIK
 	tristate "ST-Ericsson Nomadik SKE keyboard"
-	depends on PLAT_NOMADIK
+	depends on (ARCH_NOMADIK || ARCH_U8500)
 	select INPUT_MATRIXKMAP
 	help
 	  Say Y here if you want to use a keypad provided on the SKE controller
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 4883139..e4f5748 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -559,7 +559,7 @@  config MTD_NAND_JZ4740
 
 config MTD_NAND_FSMC
 	tristate "Support for NAND on ST Micros FSMC"
-	depends on PLAT_SPEAR || PLAT_NOMADIK || MACH_U300
+	depends on PLAT_SPEAR || ARCH_NOMADIK || ARCH_U8500 || MACH_U300
 	help
 	  Enables support for NAND Flash chips on the ST Microelectronics
 	  Flexible Static Memory Controller (FSMC)
diff --git a/include/linux/platform_data/clocksource-nomadik-mtu.h b/include/linux/platform_data/clocksource-nomadik-mtu.h
new file mode 100644
index 0000000..8008897
--- /dev/null
+++ b/include/linux/platform_data/clocksource-nomadik-mtu.h
@@ -0,0 +1,9 @@ 
+#ifndef __PLAT_MTU_H
+#define __PLAT_MTU_H
+
+void nmdk_timer_init(void __iomem *base, int irq);
+void nmdk_clkevt_reset(void);
+void nmdk_clksrc_reset(void);
+
+#endif /* __PLAT_MTU_H */
+