diff options
Diffstat (limited to 'arch/m68k/cpu/mcf5227x/speed.c')
| -rw-r--r-- | arch/m68k/cpu/mcf5227x/speed.c | 40 |
1 files changed, 21 insertions, 19 deletions
diff --git a/arch/m68k/cpu/mcf5227x/speed.c b/arch/m68k/cpu/mcf5227x/speed.c index 7e385d399..b94a9eda4 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; } |