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Diffstat (limited to 'arch/m68k/cpu/mcf5227x/speed.c')
-rw-r--r--arch/m68k/cpu/mcf5227x/speed.c40
1 files changed, 21 insertions, 19 deletions
diff --git a/arch/m68k/cpu/mcf5227x/speed.c b/arch/m68k/cpu/mcf5227x/speed.c
index 7e385d3998..b94a9eda48 100644
--- a/arch/m68k/cpu/mcf5227x/speed.c
+++ b/arch/m68k/cpu/mcf5227x/speed.c
@@ -1,6 +1,6 @@
/*
*
- * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
*
* See file CREDITS for list of people who contributed to this
@@ -26,6 +26,7 @@
#include <asm/processor.h>
#include <asm/immap.h>
+#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -44,7 +45,7 @@ DECLARE_GLOBAL_DATA_PTR;
void clock_enter_limp(int lpdiv)
{
- volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM;
+ ccm_t *ccm = (ccm_t *)MMAP_CCM;
int i, j;
/* Check bounds of divider */
@@ -57,10 +58,10 @@ void clock_enter_limp(int lpdiv)
for (i = 0, j = lpdiv; j != 1; j >>= 1, i++) ;
/* Apply the divider to the system clock */
- ccm->cdr = (ccm->cdr & 0xF0FF) | CCM_CDR_LPDIV(i);
+ clrsetbits_be16(&ccm->cdr, 0x0f00, CCM_CDR_LPDIV(i));
/* Enable Limp Mode */
- ccm->misccr |= CCM_MISCCR_LIMP;
+ setbits_be16(&ccm->misccr, CCM_MISCCR_LIMP);
}
/*
@@ -69,14 +70,15 @@ void clock_enter_limp(int lpdiv)
*/
void clock_exit_limp(void)
{
- volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM;
- volatile pll_t *pll = (volatile pll_t *)MMAP_PLL;
+ ccm_t *ccm = (ccm_t *)MMAP_CCM;
+ pll_t *pll = (pll_t *)MMAP_PLL;
/* Exit Limp mode */
- ccm->misccr &= ~CCM_MISCCR_LIMP;
+ clrbits_be16(&ccm->misccr, CCM_MISCCR_LIMP);
/* Wait for the PLL to lock */
- while (!(pll->psr & PLL_PSR_LOCK)) ;
+ while (!(in_be32(&pll->psr) & PLL_PSR_LOCK))
+ ;
}
/*
@@ -85,12 +87,12 @@ void clock_exit_limp(void)
int get_clocks(void)
{
- volatile ccm_t *ccm = (volatile ccm_t *)MMAP_CCM;
- volatile pll_t *pll = (volatile pll_t *)MMAP_PLL;
+ ccm_t *ccm = (ccm_t *)MMAP_CCM;
+ pll_t *pll = (pll_t *)MMAP_PLL;
int vco, temp, pcrvalue, pfdr;
u8 bootmode;
- pcrvalue = pll->pcr & 0xFF0F0FFF;
+ pcrvalue = in_be32(&pll->pcr) & 0xFF0F0FFF;
pfdr = pcrvalue >> 24;
if (pfdr == 0x1E)
@@ -102,32 +104,32 @@ int get_clocks(void)
if (bootmode == 0) {
/* Normal mode */
- vco = ((pll->pcr & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC;
+ vco = ((in_be32(&pll->pcr) & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC;
if ((vco < CLOCK_PLL_FVCO_MIN) || (vco > CLOCK_PLL_FVCO_MAX)) {
/* Default value */
- pcrvalue = (pll->pcr & 0x00FFFFFF);
+ pcrvalue = (in_be32(&pll->pcr) & 0x00FFFFFF);
pcrvalue |= 0x1E << 24;
- pll->pcr = pcrvalue;
+ out_be32(&pll->pcr, pcrvalue);
vco =
- ((pll->pcr & 0xFF000000) >> 24) *
+ ((in_be32(&pll->pcr) & 0xFF000000) >> 24) *
CONFIG_SYS_INPUT_CLKSRC;
}
gd->vco_clk = vco; /* Vco clock */
} else if (bootmode == 3) {
/* serial mode */
- vco = ((pll->pcr & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC;
+ vco = ((in_be32(&pll->pcr) & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC;
gd->vco_clk = vco; /* Vco clock */
}
- if ((ccm->ccr & CCM_MISCCR_LIMP) == CCM_MISCCR_LIMP) {
+ if ((in_be16(&ccm->ccr) & CCM_MISCCR_LIMP) == CCM_MISCCR_LIMP) {
/* Limp mode */
} else {
gd->inp_clk = CONFIG_SYS_INPUT_CLKSRC; /* Input clock */
- temp = (pll->pcr & PLL_PCR_OUTDIV1_MASK) + 1;
+ temp = (in_be32(&pll->pcr) & PLL_PCR_OUTDIV1_MASK) + 1;
gd->cpu_clk = vco / temp; /* cpu clock */
- temp = ((pll->pcr & PLL_PCR_OUTDIV2_MASK) >> 4) + 1;
+ temp = ((in_be32(&pll->pcr) & PLL_PCR_OUTDIV2_MASK) >> 4) + 1;
gd->flb_clk = vco / temp; /* flexbus clock */
gd->bus_clk = gd->flb_clk;
}