Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm: (24 commits)
  ARM: force dcache flush if dcache_dirty bit set
  [ARM] pxa: workaround errata #37 by not using half turbo switching
  [ARM] pxamci: fix printing gpio numbers in pxamci_probe
  [ARM] pxa/csb726: adjust duplicate structure field initialization
  ARM: Add kmap_atomic type debugging
  ARM: boolean bit testing
  ARM: update die() output
  ARM: Dump code/mem oops lines with the appropriate log level
  ARM: Dump memory and backtrace as one printk per line
  ARM: 5756/1: ep93xx: introduce clk parent
  ARM: 5754/1: ep93xx: update i2c support
  ARM: 5753/1: ep93xx: remove old EP93XX_GPIO_* defines
  ARM: 5729/1: ep93xx: define EP93XX_*_PHYS_BASE with macros
  ARM: 5751/1: ep93xx/micro9: Add Micro9-Slim
  ARM: 5750/1: ep93xx/micro9: Update platform code
  ARM: 5749/1: ep93xx/micro9: Update maintainer
  ARM: 5752/1: SA1100: fix building of h3100
  ARM: 5748/1: bcmring: fix build warning messages
  ARM: 5747/1: Fix the start_pg value in free_memmap()
  ARM: 5746/1: Handle possible translation errors in ARMv6/v7 coherent_user_range
  ...

26 files changed, 426 insertions, 216 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 69e31aab1308..ff968842ce56 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -577,6 +577,11 @@ M:	Mike Rapoport <mike@compulab.co.il>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 
+ARM/CONTEC MICRO9 MACHINE SUPPORT
+M:	Hubert Feurstein <hubert.feurstein@contec.at>
+S:	Maintained
+F:	arch/arm/mach-ep93xx/micro9.c
+
 ARM/CORGI MACHINE SUPPORT
 M:	Richard Purdie <rpurdie@rpsys.net>
 S:	Maintained
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h
index 63a481fbbed4..338ff19ae447 100644
--- a/arch/arm/include/asm/bitops.h
+++ b/arch/arm/include/asm/bitops.h
@@ -84,7 +84,7 @@ ____atomic_test_and_set_bit(unsigned int bit, volatile unsigned long *p)
 	*p = res | mask;
 	raw_local_irq_restore(flags);
 
-	return res & mask;
+	return (res & mask) != 0;
 }
 
 static inline int
@@ -101,7 +101,7 @@ ____atomic_test_and_clear_bit(unsigned int bit, volatile unsigned long *p)
 	*p = res & ~mask;
 	raw_local_irq_restore(flags);
 
-	return res & mask;
+	return (res & mask) != 0;
 }
 
 static inline int
@@ -118,7 +118,7 @@ ____atomic_test_and_change_bit(unsigned int bit, volatile unsigned long *p)
 	*p = res ^ mask;
 	raw_local_irq_restore(flags);
 
-	return res & mask;
+	return (res & mask) != 0;
 }
 
 #include <asm-generic/bitops/non-atomic.h>
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 467b69ed1021..f838f36eb702 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -45,21 +45,21 @@ static int __init user_debug_setup(char *str)
 __setup("user_debug=", user_debug_setup);
 #endif
 
-static void dump_mem(const char *str, unsigned long bottom, unsigned long top);
+static void dump_mem(const char *, const char *, unsigned long, unsigned long);
 
 void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
 {
 #ifdef CONFIG_KALLSYMS
-	printk("[<%08lx>] ", where);
-	print_symbol("(%s) ", where);
-	printk("from [<%08lx>] ", from);
-	print_symbol("(%s)\n", from);
+	char sym1[KSYM_SYMBOL_LEN], sym2[KSYM_SYMBOL_LEN];
+	sprint_symbol(sym1, where);
+	sprint_symbol(sym2, from);
+	printk("[<%08lx>] (%s) from [<%08lx>] (%s)\n", where, sym1, from, sym2);
 #else
 	printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
 #endif
 
 	if (in_exception_text(where))
-		dump_mem("Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs));
+		dump_mem("", "Exception stack", frame + 4, frame + 4 + sizeof(struct pt_regs));
 }
 
 #ifndef CONFIG_ARM_UNWIND
@@ -81,9 +81,10 @@ static int verify_stack(unsigned long sp)
 /*
  * Dump out the contents of some memory nicely...
  */
-static void dump_mem(const char *str, unsigned long bottom, unsigned long top)
+static void dump_mem(const char *lvl, const char *str, unsigned long bottom,
+		     unsigned long top)
 {
-	unsigned long p = bottom & ~31;
+	unsigned long first;
 	mm_segment_t fs;
 	int i;
 
@@ -95,33 +96,37 @@ static void dump_mem(const char *str, unsigned long bottom, unsigned long top)
 	fs = get_fs();
 	set_fs(KERNEL_DS);
 
-	printk("%s(0x%08lx to 0x%08lx)\n", str, bottom, top);
+	printk("%s%s(0x%08lx to 0x%08lx)\n", lvl, str, bottom, top);
 
-	for (p = bottom & ~31; p < top;) {
-		printk("%04lx: ", p & 0xffff);
+	for (first = bottom & ~31; first < top; first += 32) {
+		unsigned long p;
+		char str[sizeof(" 12345678") * 8 + 1];
 
-		for (i = 0; i < 8; i++, p += 4) {
-			unsigned int val;
+		memset(str, ' ', sizeof(str));
+		str[sizeof(str) - 1] = '\0';
 
-			if (p < bottom || p >= top)
-				printk("         ");
-			else {
-				__get_user(val, (unsigned long *)p);
-				printk("%08x ", val);
+		for (p = first, i = 0; i < 8 && p < top; i++, p += 4) {
+			if (p >= bottom && p < top) {
+				unsigned long val;
+				if (__get_user(val, (unsigned long *)p) == 0)
+					sprintf(str + i * 9, " %08lx", val);
+				else
+					sprintf(str + i * 9, " ????????");
 			}
 		}
-		printk ("\n");
+		printk("%s%04lx:%s\n", lvl, first & 0xffff, str);
 	}
 
 	set_fs(fs);
 }
 
-static void dump_instr(struct pt_regs *regs)
+static void dump_instr(const char *lvl, struct pt_regs *regs)
 {
 	unsigned long addr = instruction_pointer(regs);
 	const int thumb = thumb_mode(regs);
 	const int width = thumb ? 4 : 8;
 	mm_segment_t fs;
+	char str[sizeof("00000000 ") * 5 + 2 + 1], *p = str;
 	int i;
 
 	/*
@@ -132,7 +137,6 @@ static void dump_instr(struct pt_regs *regs)
 	fs = get_fs();
 	set_fs(KERNEL_DS);
 
-	printk("Code: ");
 	for (i = -4; i < 1; i++) {
 		unsigned int val, bad;
 
@@ -142,13 +146,14 @@ static void dump_instr(struct pt_regs *regs)
 			bad = __get_user(val, &((u32 *)addr)[i]);
 
 		if (!bad)
-			printk(i == 0 ? "(%0*x) " : "%0*x ", width, val);
+			p += sprintf(p, i == 0 ? "(%0*x) " : "%0*x ",
+					width, val);
 		else {
-			printk("bad PC value.");
+			p += sprintf(p, "bad PC value");
 			break;
 		}
 	}
-	printk("\n");
+	printk("%sCode: %s\n", lvl, str);
 
 	set_fs(fs);
 }
@@ -224,18 +229,19 @@ static void __die(const char *str, int err, struct thread_info *thread, struct p
 	struct task_struct *tsk = thread->task;
 	static int die_counter;
 
-	printk("Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
+	printk(KERN_EMERG "Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
 	       str, err, ++die_counter);
+	sysfs_printk_last_file();
 	print_modules();
 	__show_regs(regs);
-	printk("Process %s (pid: %d, stack limit = 0x%p)\n",
-		tsk->comm, task_pid_nr(tsk), thread + 1);
+	printk(KERN_EMERG "Process %.*s (pid: %d, stack limit = 0x%p)\n",
+		TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), thread + 1);
 
 	if (!user_mode(regs) || in_interrupt()) {
-		dump_mem("Stack: ", regs->ARM_sp,
+		dump_mem(KERN_EMERG, "Stack: ", regs->ARM_sp,
 			 THREAD_SIZE + (unsigned long)task_stack_page(tsk));
 		dump_backtrace(regs, tsk);
-		dump_instr(regs);
+		dump_instr(KERN_EMERG, regs);
 	}
 }
 
@@ -250,13 +256,14 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
 
 	oops_enter();
 
-	console_verbose();
 	spin_lock_irq(&die_lock);
+	console_verbose();
 	bust_spinlocks(1);
 	__die(str, err, thread, regs);
 	bust_spinlocks(0);
 	add_taint(TAINT_DIE);
 	spin_unlock_irq(&die_lock);
+	oops_exit();
 
 	if (in_interrupt())
 		panic("Fatal exception in interrupt");
@@ -264,7 +271,6 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
 	if (panic_on_oops)
 		panic("Fatal exception");
 
-	oops_exit();
 	do_exit(SIGSEGV);
 }
 
@@ -349,7 +355,7 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
 	if (user_debug & UDBG_UNDEFINED) {
 		printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n",
 			current->comm, task_pid_nr(current), pc);
-		dump_instr(regs);
+		dump_instr(KERN_INFO, regs);
 	}
 #endif
 
@@ -400,7 +406,7 @@ static int bad_syscall(int n, struct pt_regs *regs)
 	if (user_debug & UDBG_SYSCALL) {
 		printk(KERN_ERR "[%d] %s: obsolete system call %08x.\n",
 			task_pid_nr(current), current->comm, n);
-		dump_instr(regs);
+		dump_instr(KERN_ERR, regs);
 	}
 #endif
 
@@ -579,7 +585,7 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
 	if (user_debug & UDBG_SYSCALL) {
 		printk("[%d] %s: arm syscall %d\n",
 		       task_pid_nr(current), current->comm, no);
-		dump_instr(regs);
+		dump_instr("", regs);
 		if (user_mode(regs)) {
 			__show_regs(regs);
 			c_backtrace(regs->ARM_fp, processor_mode(regs));
@@ -656,7 +662,7 @@ baddataabort(int code, unsigned long instr, struct pt_regs *regs)
 	if (user_debug & UDBG_BADABORT) {
 		printk(KERN_ERR "[%d] %s: bad data abort: code %d instr 0x%08lx\n",
 			task_pid_nr(current), current->comm, code, instr);
-		dump_instr(regs);
+		dump_instr(KERN_ERR, regs);
 		show_pte(current->mm, addr);
 	}
 #endif
diff --git a/arch/arm/mach-bcmring/core.c b/arch/arm/mach-bcmring/core.c
index 4b4f69251b31..e590bbe0a7b4 100644
--- a/arch/arm/mach-bcmring/core.c
+++ b/arch/arm/mach-bcmring/core.c
@@ -271,12 +271,12 @@ static struct irqaction bcmring_timer_irq = {
 	.handler = bcmring_timer_interrupt,
 };
 
-static cycle_t bcmring_get_cycles_timer1(void)
+static cycle_t bcmring_get_cycles_timer1(struct clocksource *cs)
 {
 	return ~readl(TIMER1_VA_BASE + TIMER_VALUE);
 }
 
-static cycle_t bcmring_get_cycles_timer3(void)
+static cycle_t bcmring_get_cycles_timer3(struct clocksource *cs)
 {
 	return ~readl(TIMER3_VA_BASE + TIMER_VALUE);
 }
diff --git a/arch/arm/mach-bcmring/include/mach/system.h b/arch/arm/mach-bcmring/include/mach/system.h
index cdbf93c694a6..38b37060d426 100644
--- a/arch/arm/mach-bcmring/include/mach/system.h
+++ b/arch/arm/mach-bcmring/include/mach/system.h
@@ -29,7 +29,7 @@ static inline void arch_idle(void)
 	cpu_do_idle();
 }
 
-static inline void arch_reset(char mode, char *cmd)
+static inline void arch_reset(char mode, const char *cmd)
 {
 	printk("arch_reset:%c %x\n", mode, bcmring_arch_warm_reboot);
 
diff --git a/arch/arm/mach-ep93xx/Kconfig b/arch/arm/mach-ep93xx/Kconfig
index d7291c682a64..9167c3d2a5ed 100644
--- a/arch/arm/mach-ep93xx/Kconfig
+++ b/arch/arm/mach-ep93xx/Kconfig
@@ -17,13 +17,31 @@ config EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	bool "0x00000000 - SDCE3/SyncBoot"
 	help
 	  Select this option if you want support for EP93xx boards with the
-	  first SDRAM bank at 0x00000000
+	  first SDRAM bank at 0x00000000.
 
 config EP93XX_SDCE0_PHYS_OFFSET
 	bool "0xc0000000 - SDCEO"
 	help
 	  Select this option if you want support for EP93xx boards with the
-	  first SDRAM bank at 0xc0000000
+	  first SDRAM bank at 0xc0000000.
+
+config EP93XX_SDCE1_PHYS_OFFSET
+	bool "0xd0000000 - SDCE1"
+	help
+	  Select this option if you want support for EP93xx boards with the
+	  first SDRAM bank at 0xd0000000.
+
+config EP93XX_SDCE2_PHYS_OFFSET
+	bool "0xe0000000 - SDCE2"
+	help
+	  Select this option if you want support for EP93xx boards with the
+	  first SDRAM bank at 0xe0000000.
+
+config EP93XX_SDCE3_ASYNC_PHYS_OFFSET
+	bool "0xf0000000 - SDCE3/AsyncBoot"
+	help
+	  Select this option if you want support for EP93xx boards with the
+	  first SDRAM bank at 0xf0000000.
 
 endchoice
 
@@ -112,28 +130,36 @@ config MACH_MICRO9
 	bool
 
 config MACH_MICRO9H
-	bool "Support Contec Hypercontrol Micro9-H"
+	bool "Support Contec Micro9-High"
 	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_MICRO9
 	help
 	  Say 'Y' here if you want your kernel to support the
-	  Contec Hypercontrol Micro9-H board.
+	  Contec Micro9-High board.
 
 config MACH_MICRO9M
-	bool "Support Contec Hypercontrol Micro9-M"
-	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
+	bool "Support Contec Micro9-Mid"
+	depends on EP93XX_SDCE3_ASYNC_PHYS_OFFSET
 	select MACH_MICRO9
 	help
 	  Say 'Y' here if you want your kernel to support the
-	  Contec Hypercontrol Micro9-M board.
+	  Contec Micro9-Mid board.
 
 config MACH_MICRO9L
-	bool "Support Contec Hypercontrol Micro9-L"
+	bool "Support Contec Micro9-Lite"
 	depends on EP93XX_SDCE3_SYNC_PHYS_OFFSET
 	select MACH_MICRO9
 	help
 	  Say 'Y' here if you want your kernel to support the
-	  Contec Hypercontrol Micro9-L board.
+	  Contec Micro9-Lite board.
+
+config MACH_MICRO9S
+	bool "Support Contec Micro9-Slim"
+	depends on EP93XX_SDCE3_ASYNC_PHYS_OFFSET
+	select MACH_MICRO9
+	help
+	  Say 'Y' here if you want your kernel to support the
+	  Contec Micro9-Slim board.
 
 config MACH_TS72XX
 	bool "Support Technologic Systems TS-72xx SBC"
diff --git a/arch/arm/mach-ep93xx/Makefile.boot b/arch/arm/mach-ep93xx/Makefile.boot
index 27a085a8f12a..0ad33f15c622 100644
--- a/arch/arm/mach-ep93xx/Makefile.boot
+++ b/arch/arm/mach-ep93xx/Makefile.boot
@@ -3,3 +3,12 @@ params_phys-$(CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET)	:= 0x00000100
 
    zreladdr-$(CONFIG_EP93XX_SDCE0_PHYS_OFFSET)		:= 0xc0008000
 params_phys-$(CONFIG_EP93XX_SDCE0_PHYS_OFFSET)		:= 0xc0000100
+
+   zreladdr-$(CONFIG_EP93XX_SDCE1_PHYS_OFFSET)		:= 0xd0008000
+params_phys-$(CONFIG_EP93XX_SDCE1_PHYS_OFFSET)		:= 0xd0000100
+
+   zreladdr-$(CONFIG_EP93XX_SDCE2_PHYS_OFFSET)		:= 0xe0008000
+params_phys-$(CONFIG_EP93XX_SDCE2_PHYS_OFFSET)		:= 0xe0000100
+
+   zreladdr-$(CONFIG_EP93XX_SDCE3_ASYNC_PHYS_OFFSET)	:= 0xf0008000
+params_phys-$(CONFIG_EP93XX_SDCE3_ASYNC_PHYS_OFFSET)	:= 0xf0000100
diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c
index dda19cd76194..1d0f9d8aff2e 100644
--- a/arch/arm/mach-ep93xx/clock.c
+++ b/arch/arm/mach-ep93xx/clock.c
@@ -16,13 +16,16 @@
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/io.h>
+#include <linux/spinlock.h>
+
+#include <mach/hardware.h>
 
 #include <asm/clkdev.h>
 #include <asm/div64.h>
-#include <mach/hardware.h>
 
 
 struct clk {
+	struct clk	*parent;
 	unsigned long	rate;
 	int		users;
 	int		sw_locked;
@@ -39,40 +42,60 @@ static unsigned long get_uart_rate(struct clk *clk);
 static int set_keytchclk_rate(struct clk *clk, unsigned long rate);
 static int set_div_rate(struct clk *clk, unsigned long rate);
 
+
+static struct clk clk_xtali = {
+	.rate		= EP93XX_EXT_CLK_RATE,
+};
 static struct clk clk_uart1 = {
+	.parent		= &clk_xtali,
 	.sw_locked	= 1,
 	.enable_reg	= EP93XX_SYSCON_DEVCFG,
 	.enable_mask	= EP93XX_SYSCON_DEVCFG_U1EN,
 	.get_rate	= get_uart_rate,
 };
 static struct clk clk_uart2 = {
+	.parent		= &clk_xtali,
 	.sw_locked	= 1,
 	.enable_reg	= EP93XX_SYSCON_DEVCFG,
 	.enable_mask	= EP93XX_SYSCON_DEVCFG_U2EN,
 	.get_rate	= get_uart_rate,
 };
 static struct clk clk_uart3 = {
+	.parent		= &clk_xtali,
 	.sw_locked	= 1,
 	.enable_reg	= EP93XX_SYSCON_DEVCFG,
 	.enable_mask	= EP93XX_SYSCON_DEVCFG_U3EN,
 	.get_rate	= get_uart_rate,
 };
-static struct clk clk_pll1;
-static struct clk clk_f;
-static struct clk clk_h;
-static struct clk clk_p;
-static struct clk clk_pll2;
+static struct clk clk_pll1 = {
+	.parent		= &clk_xtali,
+};
+static struct clk clk_f = {
+	.parent		= &clk_pll1,
+};
+static struct clk clk_h = {
+	.parent		= &clk_pll1,
+};
+static struct clk clk_p = {
+	.parent		= &clk_pll1,
+};
+static struct clk clk_pll2 = {
+	.parent		= &clk_xtali,
+};
 static struct clk clk_usb_host = {
+	.parent		= &clk_pll2,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_USH_EN,
 };
 static struct clk clk_keypad = {
+	.parent		= &clk_xtali,
 	.sw_locked	= 1,
 	.enable_reg	= EP93XX_SYSCON_KEYTCHCLKDIV,
 	.enable_mask	= EP93XX_SYSCON_KEYTCHCLKDIV_KEN,
 	.set_rate	= set_keytchclk_rate,
 };
 static struct clk clk_pwm = {
+	.parent		= &clk_xtali,
 	.rate		= EP93XX_EXT_CLK_RATE,
 };
 
@@ -85,50 +108,62 @@ static struct clk clk_video = {
 
 /* DMA Clocks */
 static struct clk clk_m2p0 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P0,
 };
 static struct clk clk_m2p1 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P1,
 };
 static struct clk clk_m2p2 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P2,
 };
 static struct clk clk_m2p3 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P3,
 };
 static struct clk clk_m2p4 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P4,
 };
 static struct clk clk_m2p5 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P5,
 };
 static struct clk clk_m2p6 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P6,
 };
 static struct clk clk_m2p7 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P7,
 };
 static struct clk clk_m2p8 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P8,
 };
 static struct clk clk_m2p9 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2P9,
 };
 static struct clk clk_m2m0 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2M0,
 };
 static struct clk clk_m2m1 = {
+	.parent		= &clk_h,
 	.enable_reg	= EP93XX_SYSCON_PWRCNT,
 	.enable_mask	= EP93XX_SYSCON_PWRCNT_DMA_M2M1,
 };
@@ -137,6 +172,7 @@ static struct clk clk_m2m1 = {
 	{ .dev_id = dev, .con_id = con, .clk = ck }
 
 static struct clk_lookup clocks[] = {
+	INIT_CK(NULL,			"xtali",	&clk_xtali),
 	INIT_CK("apb:uart1",		NULL,		&clk_uart1),
 	INIT_CK("apb:uart2",		NULL,		&clk_uart2),
 	INIT_CK("apb:uart3",		NULL,		&clk_uart3),
@@ -163,48 +199,84 @@ static struct clk_lookup clocks[] = {
 	INIT_CK(NULL,			"m2m1",		&clk_m2m1),
 };
 
+static DEFINE_SPINLOCK(clk_lock);
+
+static void __clk_enable(struct clk *clk)
+{
+	if (!clk->users++) {
+		if (clk->parent)
+			__clk_enable(clk->parent);
+
+		if (clk->enable_reg) {
+			u32 v;
+
+			v = __raw_readl(clk->enable_reg);
+			v |= clk->enable_mask;
+			if (clk->sw_locked)
+				ep93xx_syscon_swlocked_write(v, clk->enable_reg);
+			else
+				__raw_writel(v, clk->enable_reg);
+		}
+	}
+}
 
 int clk_enable(struct clk *clk)
 {
-	if (!clk->users++ && clk->enable_reg) {
-		u32 value;
+	unsigned long flags;
 
-		value = __raw_readl(clk->enable_reg);
-		value |= clk->enable_mask;
-		if (clk->sw_locked)
-			ep93xx_syscon_swlocked_write(value, clk->enable_reg);
-		else
-			__raw_writel(value, clk->enable_reg);
-	}
+	if (!clk)
+		return -EINVAL;
+
+	spin_lock_irqsave(&clk_lock, flags);
+	__clk_enable(clk);
+	spin_unlock_irqrestore(&clk_lock, flags);
 
 	return 0;
 }
 EXPORT_SYMBOL(clk_enable);
 
-void clk_disable(struct clk *clk)
+static void __clk_disable(struct clk *clk)
 {
-	if (!--clk->users && clk->enable_reg) {
-		u32 value;
+	if (!--clk->users) {
+		if (clk->enable_reg) {
+			u32 v;
+
+			v = __raw_readl(clk->enable_reg);
+			v &= ~clk->enable_mask;
+			if (clk->sw_locked)
+				ep93xx_syscon_swlocked_write(v, clk->enable_reg);
+			else
+				__raw_writel(v, clk->enable_reg);
+		}
 
-		value = __raw_readl(clk->enable_reg);
-		value &= ~clk->enable_mask;
-		if (clk->sw_locked)
-			ep93xx_syscon_swlocked_write(value, clk->enable_reg);
-		else
-			__raw_writel(value, clk->enable_reg);
+		if (clk->parent)
+			__clk_disable(clk->parent);
 	}
 }
+
+void clk_disable(struct clk *clk)
+{
+	unsigned long flags;
+
+	if (!clk)
+		return;
+
+	spin_lock_irqsave(&clk_lock, flags);
+	__clk_disable(clk);
+	spin_unlock_irqrestore(&clk_lock, flags);
+}
 EXPORT_SYMBOL(clk_disable);
 
 static unsigned long get_uart_rate(struct clk *clk)
 {
+	unsigned long rate = clk_get_rate(clk->parent);
 	u32 value;
 
 	value = __raw_readl(EP93XX_SYSCON_PWRCNT);
 	if (value & EP93XX_SYSCON_PWRCNT_UARTBAUD)
-		return EP93XX_EXT_CLK_RATE;
+		return rate;
 	else
-		return EP93XX_EXT_CLK_RATE / 2;
+		return rate / 2;
 }
 
 unsigned long clk_get_rate(struct clk *clk)
@@ -244,16 +316,16 @@ static int set_keytchclk_rate(struct clk *clk, unsigned long rate)
 	return 0;
 }
 
-static unsigned long calc_clk_div(unsigned long rate, int *psel, int *esel,
-				  int *pdiv, int *div)
+static int calc_clk_div(struct clk *clk, unsigned long rate,
+			int *psel, int *esel, int *pdiv, int *div)
 {
-	unsigned long max_rate, best_rate = 0,
-		actual_rate = 0, mclk_rate = 0, rate_err = -1;
+	struct clk *mclk;
+	unsigned long max_rate, actual_rate, mclk_rate, rate_err = -1;
 	int i, found = 0, __div = 0, __pdiv = 0;
 
 	/* Don't exceed the maximum rate */
 	max_rate = max(max(clk_pll1.rate / 4, clk_pll2.rate / 4),
-		       (unsigned long)EP93XX_EXT_CLK_RATE / 4);
+		       clk_xtali.rate / 4);
 	rate = min(rate, max_rate);
 
 	/*
@@ -267,11 +339,12 @@ static unsigned long calc_clk_div(unsigned long rate, int *psel, int *esel,
 	 */
 	for (i = 0; i < 3; i++) {
 		if (i == 0)
-			mclk_rate = EP93XX_EXT_CLK_RATE * 2;
+			mclk = &clk_xtali;
 		else if (i == 1)
-			mclk_rate = clk_pll1.rate * 2;
-		else if (i == 2)
-			mclk_rate = clk_pll2.rate * 2;
+			mclk = &clk_pll1;
+		else
+			mclk = &clk_pll2;
+		mclk_rate = mclk->rate * 2;
 
 		/* Try each predivider value */
 		for (__pdiv = 4; __pdiv <= 6; __pdiv++) {
@@ -286,7 +359,8 @@ static unsigned long calc_clk_div(unsigned long rate, int *psel, int *esel,
 				*div = __div;
 				*psel = (i == 2);
 				*esel = (i != 0);
-				best_rate = actual_rate;
+				clk->parent = mclk;
+				clk->rate = actual_rate;
 				rate_err = abs(actual_rate - rate);
 				found = 1;
 			}
@@ -294,21 +368,19 @@ static unsigned long calc_clk_div(unsigned long rate, int *psel, int *esel,
 	}
 
 	if (!found)
-		return 0;
+		return -EINVAL;
 
-	return best_rate;
+	return 0;
 }
 
 static int set_div_rate(struct clk *clk, unsigned long rate)
 {
-	unsigned long actual_rate;
-	int psel = 0, esel = 0, pdiv = 0, div = 0;
+	int err, psel = 0, esel = 0, pdiv = 0, div = 0;
 	u32 val;
 
-	actual_rate = calc_clk_div(rate, &psel, &esel, &pdiv, &div);
-	if (actual_rate == 0)
-		return -EINVAL;
-	clk->rate = actual_rate;
+	err = calc_clk_div(clk, rate, &psel, &esel, &pdiv, &div);
+	if (err)
+		return err;
 
 	/* Clear the esel, psel, pdiv and div bits */
 	val = __raw_readl(clk->enable_reg);
@@ -344,7 +416,7 @@ static unsigned long calc_pll_rate(u32 config_word)
 	unsigned long long rate;
 	int i;
 
-	rate = EP93XX_EXT_CLK_RATE;
+	rate = clk_xtali.rate;
 	rate *= ((config_word >> 11) & 0x1f) + 1;		/* X1FBD */
 	rate *= ((config_word >> 5) & 0x3f) + 1;		/* X2FBD */
 	do_div(rate, (config_word & 0x1f) + 1);			/* X2IPD */
@@ -377,7 +449,7 @@ static int __init ep93xx_clock_init(void)
 
 	value = __raw_readl(EP93XX_SYSCON_CLOCK_SET1);
 	if (!(value & 0x00800000)) {			/* PLL1 bypassed?  */
-		clk_pll1.rate = EP93XX_EXT_CLK_RATE;
+		clk_pll1.rate = clk_xtali.rate;
 	} else {
 		clk_pll1.rate = calc_pll_rate(value);
 	}
@@ -388,7 +460,7 @@ static int __init ep93xx_clock_init(void)
 
 	value = __raw_readl(EP93XX_SYSCON_CLOCK_SET2);
 	if (!(value & 0x00080000)) {			/* PLL2 bypassed?  */
-		clk_pll2.rate = EP93XX_EXT_CLK_RATE;
+		clk_pll2.rate = clk_xtali.rate;
 	} else if (value & 0x00040000) {		/* PLL2 enabled?  */
 		clk_pll2.rate = calc_pll_rate(value);
 	} else {
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index f7ebed942f66..f95dc160c34b 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -550,13 +550,11 @@ void __init ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr)
 	platform_device_register(&ep93xx_eth_device);
 }
 
-static struct i2c_gpio_platform_data ep93xx_i2c_data = {
-	.sda_pin		= EP93XX_GPIO_LINE_EEDAT,
-	.sda_is_open_drain	= 0,
-	.scl_pin		= EP93XX_GPIO_LINE_EECLK,
-	.scl_is_open_drain	= 0,
-	.udelay			= 2,
-};
+
+/*************************************************************************
+ * EP93xx i2c peripheral handling
+ *************************************************************************/
+static struct i2c_gpio_platform_data ep93xx_i2c_data;
 
 static struct platform_device ep93xx_i2c_device = {
 	.name			= "i2c-gpio",
@@ -564,8 +562,25 @@ static struct platform_device ep93xx_i2c_device = {
 	.dev.platform_data	= &ep93xx_i2c_data,
 };
 
-void __init ep93xx_register_i2c(struct i2c_board_info *devices, int num)
+void __init ep93xx_register_i2c(struct i2c_gpio_platform_data *data,
+				struct i2c_board_info *devices, int num)
 {
+	/*
+	 * Set the EEPROM interface pin drive type control.
+	 * Defines the driver type for the EECLK and EEDAT pins as either
+	 * open drain, which will require an external pull-up, or a normal
+	 * CMOS driver.
+	 */
+	if (data->sda_is_open_drain && data->sda_pin != EP93XX_GPIO_LINE_EEDAT)
+		pr_warning("ep93xx: sda != EEDAT, open drain has no effect\n");
+	if (data->scl_is_open_drain && data->scl_pin != EP93XX_GPIO_LINE_EECLK)
+		pr_warning("ep93xx: scl != EECLK, open drain has no effect\n");
+
+	__raw_writel((data->sda_is_open_drain << 1) |
+		     (data->scl_is_open_drain << 0),
+		     EP93XX_GPIO_EEDRIVE);
+
+	ep93xx_i2c_data = *data;
 	i2c_register_board_info(0, devices, num);
 	platform_device_register(&ep93xx_i2c_device);
 }
diff --git a/arch/arm/mach-ep93xx/edb93xx.c b/arch/arm/mach-ep93xx/edb93xx.c
index 73145ae5d3fa..ca71cf1a72a0 100644
--- a/arch/arm/mach-ep93xx/edb93xx.c
+++ b/arch/arm/mach-ep93xx/edb93xx.c
@@ -27,8 +27,10 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/i2c.h>
 #include <linux/mtd/physmap.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/i2c-gpio.h>
 
 #include <mach/hardware.h>
 
@@ -76,13 +78,26 @@ static struct ep93xx_eth_data edb93xx_eth_data = {
 	.phy_id		= 1,
 };
 
-static struct i2c_board_info __initdata edb93xxa_i2c_data[] = {
+
+/*************************************************************************
+ * EDB93xx i2c peripheral handling
+ *************************************************************************/
+static struct i2c_gpio_platform_data edb93xx_i2c_gpio_data = {
+	.sda_pin		= EP93XX_GPIO_LINE_EEDAT,
+	.sda_is_open_drain	= 0,
+	.scl_pin		= EP93XX_GPIO_LINE_EECLK,
+	.scl_is_open_drain	= 0,
+	.udelay			= 0,	/* default to 100 kHz */
+	.timeout		= 0,	/* default to 100 ms */
+};
+
+static struct i2c_board_info __initdata edb93xxa_i2c_board_info