Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (215 commits)
  ARM: memblock: setup lowmem mappings using memblock
  ARM: memblock: move meminfo into find_limits directly
  ARM: memblock: convert free_highpages() to use memblock
  ARM: move freeing of highmem pages out of mem_init()
  ARM: memblock: convert memory detail printing to use memblock
  ARM: memblock: use memblock to free memory into arm_bootmem_init()
  ARM: memblock: use memblock when initializing memory allocators
  ARM: ensure membank array is always sorted
  ARM: 6466/1: implement flush_icache_all for the rest of the CPUs
  ARM: 6464/2: fix spinlock recursion in adjust_pte()
  ARM: fix memblock breakage
  ARM: 6465/1: Fix data abort accessing proc_info from __lookup_processor_type
  ARM: 6460/1: ixp2000: fix type of ixp2000_timer_interrupt
  ARM: 6449/1: Fix for compiler warning of uninitialized variable.
  ARM: 6445/1: fixup TCM memory types
  ARM: imx: Add wake functionality to GPIO
  ARM: mx5: Add gpio-keys to mx51 babbage board
  ARM: imx: Add gpio-keys to plat-mxc
  mx31_3ds: Fix spi registration
  mx31_3ds: Fix the logic for detecting the debug board
  ...

1 files changed, 20 insertions, 2 deletions

diff --git a/arch/arm/mach-mx5/clock-mx51.c b/arch/arm/mach-mx5/clock-mx51.c
index f2aae92cf0e2..8ac36d882927 100644
--- a/arch/arm/mach-mx5/clock-mx51.c
+++ b/arch/arm/mach-mx5/clock-mx51.c
@@ -362,7 +362,7 @@ static int _clk_lp_apm_set_parent(struct clk *clk, struct clk *parent)
 	return 0;
 }
 
-static unsigned long clk_arm_get_rate(struct clk *clk)
+static unsigned long clk_cpu_get_rate(struct clk *clk)
 {
 	u32 cacrr, div;
 	unsigned long parent_rate;
@@ -374,6 +374,22 @@ static unsigned long clk_arm_get_rate(struct clk *clk)
 	return parent_rate / div;
 }
 
+static int clk_cpu_set_rate(struct clk *clk, unsigned long rate)
+{
+	u32 reg, cpu_podf;
+	unsigned long parent_rate;
+
+	parent_rate = clk_get_rate(clk->parent);
+	cpu_podf = parent_rate / rate - 1;
+	/* use post divider to change freq */
+	reg = __raw_readl(MXC_CCM_CACRR);
+	reg &= ~MXC_CCM_CACRR_ARM_PODF_MASK;
+	reg |= cpu_podf << MXC_CCM_CACRR_ARM_PODF_OFFSET;
+	__raw_writel(reg, MXC_CCM_CACRR);
+
+	return 0;
+}
+
 static int _clk_periph_apm_set_parent(struct clk *clk, struct clk *parent)
 {
 	u32 reg, mux;
@@ -736,7 +752,8 @@ static struct clk periph_apm_clk = {
 
 static struct clk cpu_clk = {
 	.parent = &pll1_sw_clk,
-	.get_rate = clk_arm_get_rate,
+	.get_rate = clk_cpu_get_rate,
+	.set_rate = clk_cpu_set_rate,
 };
 
 static struct clk ahb_clk = {
@@ -1064,6 +1081,7 @@ static struct clk_lookup lookups[] = {
 	_REGISTER_CLOCK("imx51-cspi.0", NULL, cspi_clk)
 	_REGISTER_CLOCK("sdhci-esdhc-imx.0", NULL, esdhc1_clk)
 	_REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk)
+	_REGISTER_CLOCK(NULL, "cpu_clk", cpu_clk)
 };
 
 static void clk_tree_init(void)